KingSmith WalkingPad Guide 2026: All 5 Models Ranked
The KingSmith A1 Pro is out of stock in 2026. Compare all 5 in-stock WalkingPad models — Z1, P1, C2, R2, X21 — by specs and price, and see which to buy.
| Product | Best For | Rating | Price | Action |
|---|---|---|---|---|
 | Widest belt and longest stride at mid-range price | 4.2 | View on Amazon | |
 | Budget-conscious tall users | 4.2 | View on Amazon | |
 WALKINGPAD C2 Folding Walking Pad Budget-conscious walkers who want a long belt | Budget-conscious walkers who want a long belt | 4.2 | View on Amazon | |
 WalkingPad R3 Hybrid+ 2-in-1 TreadmillEditor's Choice Premium walk-run versatility with upright storage | Premium walk-run versatility with upright storage | 4.1 | View on Amazon | |
 WalkingPad X21 Double-Fold Treadmill Runners who need vertical storage and a wide belt | Runners who need vertical storage and a wide belt | 4.4 | View on Amazon |
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price displayed on this site at the time of purchase will govern the sale of the product. As an Amazon Associate, we earn from qualifying purchases.
Bottom line: KingSmith — the brand behind WalkingPad — makes the longest-belt, quietest walking pads in the sub-$400 category. The A1 Pro that made them famous is out of stock. Five models are available now, ranging from a budget flat walker to a double-fold running treadmill. If you want the most walking surface for your money, buy the Z1. If you need both walking and running, buy the R2.
Reviewed by Jerry Mitchell, who has tested 20+ walking pads for TheBestWalkingPads.com since 2024.
TheBestWalkingPads.com is a participant in the Amazon Services LLC Associates Program. We earn a small commission on qualifying purchases at no extra cost to you.
What is KingSmith WalkingPad?
KingSmith (also written Kingsmith, or 金史密斯 in Chinese) is the manufacturer behind the WalkingPad product line — the walking pads that appear most consistently at the top of Amazon search results for "walking pad" and "under-desk treadmill." The company pioneered the flat-fold walking pad format and holds multiple patents on the fold mechanism that lets their pads collapse to as little as 3.5 inches of height for under-bed or sofa storage.
The "WalkingPad" brand name covers KingSmith's consumer-facing global lineup. When you see "WalkingPad Z1," "WalkingPad R2," or "WalkingPad X21" on Amazon, those are all KingSmith products. The KingSmith P1 and A1 Pro carry the KingSmith name directly. Every model in this guide comes from the same manufacturer with the same supply chain and parts network.
KingSmith accounts for the majority of the affiliate commissions we track on this site — they are the brand our readers buy most. Getting the model selection right matters here more than with any other brand, because the lineup spans from a budget flat walker to a premium double-fold running treadmill. This guide covers every available KingSmith/WalkingPad model as of June 2026, with concrete guidance on which one to choose.
The KingSmith A1 Pro: why it's out of stock and what to do instead
The A1 Pro ($499) was KingSmith's flagship walking-only pad for several years — a 47.2 × 16.5-inch belt, below-40-dB brushless motor, and a build quality that set the benchmark for the category. It is now out of stock globally as of June 2026, with no confirmed restock date.
If you were planning to buy an A1 Pro, here are the best alternatives:
For the same belt length with a wider surface and lower price, the WalkingPad Z1 ($299) is the strongest replacement. It is actually 0.8 inches wider than the A1 Pro, has a higher weight capacity (242 vs 220 lbs), and costs $200 less. The Z1 is the better walking pad for most A1 Pro buyers.
For a walking-only pad with strong brand recognition and over 1,300 verified reviews, the KingSmith P1 ($349) is a solid pick. It has a 47-inch belt, the established KingSmith name, and Editor's Choice designation on this site.
For a pad that walks during the day and runs in the evening, the WalkingPad R2 line is the A1 Pro's true successor — and KingSmith has now replaced the R2 itself with the newer WalkingPad R3 Hybrid+ ($799), which is the model we recommend today. It handles the full 0.5 to 7.5 mph range — lower the handrail to walk under a desk, raise it to run — and its double-fold design stores upright against a wall.
The good news: every A1 Pro replacement in this guide is at least as capable for walking, and two of them (R2, X21) add running capability the A1 Pro never had.
KingSmith WalkingPad lineup comparison
| Model | Belt Size | Max Speed | Weight Cap | Best For | |---|---|---|---|---| | WalkingPad C2 | 15.75" × 47.2" | 3.73 mph | 220 lbs | Budget entry-level | | WalkingPad Z1 | 17.3" × 47.2" | 3.7 mph | 242 lbs | Best walk-only value | | KingSmith P1 | 15.75" × 47" | 3.7 mph | 220 lbs | Proven mid-range | | WalkingPad R2 → R3 Hybrid+ | 17" × 47" | 7.5 mph | 265 lbs | Walk + run, upright storage | | WalkingPad X21 | 18.1" × 47.6" | 7.5 mph | 220 lbs | Premium running, double-fold | | ~~A1 Pro~~ | ~~16.5" × 47.2"~~ | ~~3.72 mph~~ | ~~220 lbs~~ | Out of stock |
A1 Pro is out of stock. All models above are verified in stock as of June 2026. See the Prime Day walking pad deals hub for any live KingSmith discounts during June 23–26.
| Walking Pad | Belt Size ↕ | Max Speed ↕ | Weight Limit ↕ | Rating ↑ | Price | Action |
|---|---|---|---|---|---|---|
 GoPlus 2-in-1 Folding Treadmill GoPlus | 16" x 40" | 7.5 mph | 265 lbs | 4/5 (7,066) | Check price on Amazon → | View on Amazon |
WalkingPad R3 Hybrid+ 2-in-1 Treadmill WalkingPad | 17" x 47" | 7.5 mph | 265 lbs | 4.1/5 (460) | Check price on Amazon → | View on Amazon |
KingSmith WalkingPad P1 KingSmith | 15.75" x 47" | 3.7 mph | 220 lbs | 4.2/5 (1,311) | Check price on Amazon → | View on Amazon |
WALKINGPAD Z1 WalkingPad | 17.3" x 47.2" | 3.7 mph | 242 lbs | 4.2/5 (342) | Check price on Amazon → | View on Amazon |
WALKINGPAD C2 Folding Walking Pad WalkingPad | 15.75" x 47.2" | 3.73 mph | 220 lbs | 4.2/5 (0) | Check price on Amazon → | View on Amazon |
 LifeSpan TX6-GlowUp Under Desk Treadmill LifeSpan | 20" x 48" | 6 mph | 400 lbs | 4.2/5 (95) | Check price on Amazon → | View on Amazon |
 DeerRun 4-in-1 Walking Pad DeerRun | 16.53" x 44.09" | 7.5 mph | 300 lbs | 4.3/5 (213) | Check price on Amazon → | View on Amazon |
 UREVO Strol 2E 2-in-1 Folding Treadmill UREVO | 15" x 40.2" | 6.2 mph | 265 lbs | 4.3/5 (0) | Check price on Amazon → | View on Amazon |
 UREVO CyberPad Auto-Incline Walking Pad UREVO | 16.5" x 42" | 4 mph | 242 lbs | 4.3/5 (0) | Check price on Amazon → | View on Amazon |
WalkingPad X21 Double-Fold Treadmill WalkingPad | 18.1" x 47.6" | 7.5 mph | 220 lbs | 4.4/5 (282) | Check price on Amazon → | View on Amazon |
WalkingPad C2 — the budget entry point
Best for: Budget-conscious walkers who want a long belt
Key Features
- 2.0 HP motor
- 47.2-inch belt — same length as the premium A1 Pro
Pros
- + 47.2-inch belt matches the premium A1 Pro at a fraction of the cost
- + Folds flat to 5.4 inches — slides under beds and sofas
Cons
- - Walking only — 3.73 mph max, no running mode
- - 220 lb weight limit
The C2 is KingSmith's most affordable walking pad, built for buyers who want the brand's signature long belt at the lowest possible price. Despite sitting at the bottom of the lineup by price, it shares a 47.2-inch belt length with the discontinued premium A1 Pro — the core feature that distinguishes KingSmith from most competitors.
Specs: 15.75 × 47.2-inch belt, 3.73 mph max speed, 220 lb weight capacity, 2.0 HP motor, folds flat to 5.4 inches of height, footstep induction auto-speed control, no assembly required.
Who it's for: Budget-conscious buyers who want a long-belt walking pad for home office or light daily use. The footstep induction auto-speed adjusts your pace based on where you walk on the belt — useful for distraction-free work sessions where you don't want to manually manage speed. At 55 lbs with built-in transport wheels, it is manageable alone for repositioning.
Limitations: Walking only — no running above 3.73 mph. The 2.0 HP motor is lighter than the Z1 or P1, which means less headroom for extended high-speed walking sessions. The 220 lb weight limit is the lowest in the lineup along with the P1 and X21. The C2 also does not fold as compactly as the Z1 for vertical storage.
If budget is the primary constraint, the C2 delivers KingSmith's hallmark long belt at the most accessible price. For more budget options across all brands, see our best walking pads under $500 guide.
WalkingPad Z1 — the best value in the entire lineup
Best for: Widest belt and longest stride at mid-range price
Key Features
- 0.75 HP brushless motor (continuous duty)
- Industry-leading belt width at 17.3 inches
Pros
- + Widest belt at 17.3 inches — most spacious feel
- + 47.2-inch length matches premium models
Cons
- - Walking only — 3.7 mph max
- - Smaller motor at 0.75 HP
The Z1 is the recommendation for most buyers looking at KingSmith. It offers the widest belt (17.3 inches) and same 47.2-inch length as the A1 Pro and C2, combined with a below-40-dB brushless motor and a 242 lb weight capacity — all at $299, which is $200 less than the discontinued A1 Pro and $50 less than the P1.
Specs: 17.3 × 47.2-inch belt, 3.7 mph max speed, 242 lb weight capacity, 0.75 HP brushless motor (continuous duty), below 40 dB noise level, foldable, remote control.
Who it's for: Walkers who want the most spacious walking surface available in the under-$400 price range. The 17.3-inch width is the widest of any walking pad in this guide under $500 — wider even than the premium X21's closest walking-only competitor. For the walking surface area metric specifically, the Z1 is the best per-dollar pad on this site.
The Z1's 17.3 × 47.2-inch belt gives it 816 square inches of walking surface — 24% more than the industry-standard 15.75 × 40-inch pad at this price tier, and 8% more than the A1 Pro it replaces.
For tall walkers: The Z1 is our top pick in the best walking pads for tall people guide. The 47.2-inch length handles strides comfortably for users up to around 6'4", and the extra 1.5 inches of width compared to the P1 gives a more natural feel for users with a wider natural stride. If you are over 6 feet tall and looking for a desk-walking pad, the Z1 is the model to buy.
Z1 vs A1 Pro: The Z1 is wider (17.3 vs 16.5 inches), has a higher weight capacity (242 vs 220 lbs), costs $200 less, and is currently in stock. The A1 Pro's brushless motor advantage is moot since the Z1 is also brushless. The Z1 wins on every spec that matters for walking.
Limitations: Walking only — 3.7 mph max, no running mode. The 0.75 HP motor is rated for continuous duty, but at maximum weight capacity and extended daily sessions (4+ hours), the motor runs near its rated limits. For true all-day office workloads, the LifeSpan TX6 ($1,399) with its 7-hour daily use rating is the professional choice.
For a detailed breakdown of how belt size affects walking experience for different heights, see our walking pad belt size guide.
KingSmith P1 — the proven, well-reviewed choice
Best for: Budget-conscious tall users
Key Features
- 1 HP brush motor
- Nearly as long as A1 Pro at a lower price
Pros
- + 47-inch belt nearly matches the A1 Pro
- + Significantly cheaper than A1 Pro
Cons
- - Brush motor is louder than brushless A1 Pro
- - Slightly narrower belt at 15.75 inches
The P1 is the most reviewed model in the current KingSmith lineup, with 1,300+ Amazon ratings at 4.2 stars — more than four times the reviews of the newer Z1. It carries the KingSmith name directly, has a 47-inch belt, and is priced at $349.
Specs: 15.75 × 47-inch belt, 3.7 mph max speed, 220 lb weight capacity, 1.0 HP brush motor, foldable, remote control, LED display.
Who it's for: Buyers who value an established review history and the KingSmith brand name over raw specifications. The P1 has enough verified feedback that the pattern of user experience is reliable — you know what you are getting before you buy. It is also the Editor's Choice pick on this site for the mid-range walking-only category.
P1 vs Z1: For pure walking-pad specifications, the Z1 outperforms the P1 on every measurable spec: wider belt (17.3 vs 15.75 inches), higher weight capacity (242 vs 220 lbs), quieter brushless motor (vs brush), and lower price ($299 vs $349). The P1's advantage is its larger reviews base. If you research purchases through Amazon reviews and that signal matters to you, the P1's 1,300+ reviews provide stronger social proof. If you optimize for specifications, buy the Z1.
P1 vs A1 Pro: The P1 has a slightly narrower belt (15.75 vs 16.5 inches) and uses a brush motor versus the A1 Pro's brushless, but it is currently available, $150 cheaper, and has a larger reviews base. At desk-walking speeds of 1.5 to 3 mph, the motor-type difference is noticeable but manageable in most home environments.
WalkingPad R2 — now the WalkingPad R3 Hybrid+ walk-and-run machine
Best for: Premium walk-run versatility with upright storage
Key Features
- Brushless motor, 0.5-7.5 mph (4 mph in under-desk mode, up to 7.5 mph with handrail raised)
- 2-in-1: lower the height-adjustable handrail to walk under a desk, raise it to run
Pros
- + Genuine walk-and-run: 4 mph under-desk mode, 7.5 mph with the handrail raised
- + Double-folds and stores upright — minimal storage footprint
Cons
- - Premium price point at $799
- - Heavier than walk-only pads
Heads up: the WalkingPad R2 has been discontinued — KingSmith replaced it with the newer WalkingPad R3 Hybrid+ 2-in-1 ($799), which is the model we now recommend. The R3 keeps everything that made the R2 the go-to walk-and-run pad — the proven 17 × 47-inch belt and the 0.5 to 7.5 mph range — and upgrades the frame, handrails, weight capacity, and app. It is the KingSmith model for anyone who needs both desk-walking capability and real running speed from one machine.
Specs: 17 × 47-inch belt (same footprint as the R2), 0.5–7.5 mph speed range (about 4 mph with the handrail lowered for under-desk walking, up to 7.5 mph with the handrail raised to run), 265 lb weight capacity, quiet brushless motor, height-adjustable handrail, dual side handrails for stability, double-fold design that stores upright, one-piece aluminum-alloy frame, KS Fit app with LED display (steps/speed/time/distance), fully assembled.
Who it's for: Work-from-home buyers who want to walk during meetings and run at 6 to 7.5 mph in the evening — without buying two machines. The R3 genuinely delivers both modes rather than just marketing them: lower the height-adjustable handrail for under-desk walking and raise it to a stable running position. The 2-in-1 transition takes seconds.
The double-fold upright storage is a differentiating feature. Folded and stood on its side against a wall, the R3 takes the profile of a large walking pad — far less floor space than a conventional treadmill folded against a room corner. For city apartments where floor space is limited, this storage design matters daily.
At 7.5 mph, the R3 maintains an 8-minute-mile running pace — a serious training speed for recreational runners doing interval or tempo workouts, not just a fast walk.
R3 vs P1: The P1 costs $450 less and is a better value if you only need walking. The R3 justifies the premium with a wider belt (17 vs 15.75 inches), a quiet brushless motor, running capability, 265 lb vs 220 lb capacity, dual side handrails, a one-piece aluminum-alloy frame, and the KS Fit app. If your usage is 100% desk walking, buy the P1. If there is any chance you will run, buy the R3.
R3 vs the A1 Pro: At $799 the R3 costs about $300 more than the discontinued A1 Pro, but it adds 7.5 mph running capability, a wider belt (17 vs 16.5 inches), dual side handrails, a 265 lb weight capacity, double-fold upright storage, and KS Fit app connectivity the A1 Pro never had. For buyers who were considering the A1 Pro and want the best current successor in the lineup, the R3 Hybrid+ is the upgrade.
For a full deep dive on this line, see our WalkingPad R2 review.
WalkingPad X21 — the premium double-fold flagship
Best for: Runners who need vertical storage and a wide belt
Key Features
- Double-fold design stores vertically in 8.8 inches of depth
- Widest belt in the catalog at 18.1 inches
Pros
- + 18.1 x 47.6 inch belt — most spacious surface on our list
- + Vertical double-fold storage saves the most floor space
Cons
- - Amazon lists 220 lb capacity (manufacturer rates 240 lb)
- - No handrail height adjustment
The X21 is KingSmith's most premium model: a double-fold running treadmill with the widest belt of any pad in this guide (18.1 × 47.6 inches), a brushless motor, and a distinctive vertical storage mode where the machine folds twice to just 8.8 inches of depth — the thinnest stored footprint available in any 7.5-mph treadmill.
Specs: 18.1 × 47.6-inch belt, 1–7.5 mph, 220 lb weight capacity, brushless motor with noise-reduction system, SpeedDial rotary knob for speed control, KS Fit app, 3.78-inch deck height (lowest of any running model), one-piece aluminum frame, fully assembled.
Who it's for: Runners who want the widest possible running surface and the most compact vertical storage profile. The 18.1-inch belt width is the standout specification — it gives a noticeably more spacious feel at running speed compared to every other model in this lineup, and it matches the width of commercial treadmill belts. If you regularly run at 6 to 7.5 mph and want a belt that feels like the gym rather than a home machine, the X21 is the model.
The SpeedDial rotary knob is a meaningful upgrade over button-press speed control at running speeds — fine adjustments while running are more ergonomic with a dial than with repeated button presses.
X21 tradeoffs: The 220 lb weight capacity is the same as the entry-level models and lower than the R3 Hybrid+ (265 lbs), even though both sit at $799. This is the X21's most significant limitation. If you are near or above 220 lbs, the R3 is the better choice at the same price.
X21 vs R3 (formerly R2): The X21 adds 1.1 inches of belt width, the rotary speed dial, and a more compact stored profile over the R3 Hybrid+. The R3 has a much higher weight capacity (265 vs 220 lbs), dual side handrails, and a one-piece aluminum-alloy frame — and the two are priced the same at $799. For most buyers who need walking and running, the R3 is the better value. For dedicated runners who specifically want the widest belt on the market and vertical double-fold storage, the X21 is worth choosing.
Which KingSmith model should you buy?
Buy the WalkingPad C2 if you need the longest possible belt at the most accessible price and your use is light daily desk walking.
Buy the WalkingPad Z1 if you want the best walking pad in the KingSmith lineup by specification: widest belt at 17.3 inches, quietest brushless motor, highest weight capacity in the walk-only tier, at the best price. This is the right pick for most buyers, including tall users and anyone replacing an A1 Pro.
Buy the KingSmith P1 if review volume is more important to you than specifications. The P1 has four times as many verified reviews as the Z1, and the 47-inch belt delivers the same core walking experience.
Buy the WalkingPad R2 — now the WalkingPad R3 Hybrid+ if you want both walking and running from one machine. KingSmith discontinued the R2 and replaced it with the R3, which keeps the same 17 × 47-inch belt and 7.5 mph top speed while adding a one-piece aluminum-alloy frame, dual side handrails, and a 265 lb capacity. Its double-fold upright storage and full 0.5 to 7.5 mph range make it the best all-in-one desk pad for work-and-workout buyers.
Buy the WalkingPad X21 if you are a committed runner who wants the widest belt available in the KingSmith lineup (18.1 inches) and the double-fold vertical storage profile. Verify your weight is under 220 lbs before choosing the X21 over the R2.
Skip the A1 Pro. It is out of stock with no confirmed restock. The Z1 is a better specification at a lower price; the R2 is the proper successor if running matters.
For the complete catalog — including non-KingSmith alternatives in each price tier — see our best walking pads of 2026 guide.
What makes KingSmith different from other brands?
Three engineering decisions define KingSmith/WalkingPad against the broader market.
Belt length. The 47-inch belt on the P1, Z1, and R2 is 7 inches longer than the industry-standard 40-inch pad. At walking speeds of 2 to 3 mph, that extra length matters meaningfully for tall users and anyone with a longer natural stride. It is why KingSmith dominates searches for tall-user walking pads and why the brand accounts for a disproportionate share of premium walking pad sales on Amazon.
Brushless motors. The Z1, R2, and X21 use brushless motors — longer-lasting, cooler-running, and quieter than brush-motor alternatives at equivalent power. The Z1's below-40-dB rating is partly a function of brushless design. For apartment use or video calls during desk walking, the motor type determines whether your working environment is comfortable or distracting. See our quietest walking pads for apartments guide for the full noise comparison across brands.
The fold mechanism. KingSmith's patented flat-fold design collapses pads to 3.5 to 5.4 inches of height for storage under a bed or sofa. The R2 and X21 extend this with upright and double-fold vertical storage respectively — the most compact stored footprint available in running-capable machines. For a broader look at how walking pads compare to conventional treadmills on size, noise, and cost, see our walking pad vs treadmill guide.
KingSmith WalkingPad and Prime Day 2026
Prime Day 2026 runs June 23–26 and KingSmith products — particularly the R3 Hybrid+ (the R2's successor) and X21 — are among the most-watched walking pad listings during the event. Past Prime Days have seen 10 to 20% discounts on WalkingPad flagship models, which represents $80 to $160 in savings on the R3 and $80 to $160 on the X21. We verify live KingSmith pricing throughout the event on our Prime Day walking pad deals hub. If you are reading this during June 23–26, check there before buying at standard pricing.
Prime Day 2026 (June 23–26): Even a 10% discount on the WalkingPad R3 Hybrid+ ($799 — the R2's successor) saves about $80. Check our Prime Day walking pad deals hub for verified live pricing on all KingSmith models and the best alternatives.
Our verdict on the KingSmith WalkingPad lineup
KingSmith/WalkingPad offers more variation — from a $199 entry-level flat walker to a $799 double-fold running treadmill — than any other brand in the walking pad category. The engineering quality is consistent across the lineup: long belts that outclass the 40-inch standard, quiet brushless motors on the flagships, and compact folding mechanisms that actually enable daily storage under furniture.
The single best KingSmith buy in June 2026 is the WalkingPad Z1 ($299): it offers the most walking surface per dollar of any pad on this site, runs quieter than every model at its price tier, carries more weight (242 lbs) than the more expensive P1, and replaces the out-of-stock A1 Pro with better specifications at a lower price.
For buyers who need running: the WalkingPad R2 — now the WalkingPad R3 Hybrid+ ($799) handles the full 0.5 to 7.5 mph range in a machine whose double-fold design stores upright against a wall. It ships fully assembled, uses a one-piece aluminum-alloy frame with dual side handrails, carries up to 265 lbs, pairs with the KS Fit app and LED display, and covers every walking-and-running use case a desk worker needs from a single deck.
Sources
- Centers for Disease Control and Prevention — Physical Activity Basics for Adults
- Mayo Clinic — Walking: Trim your waistline, improve your health
- American Heart Association — Physical activity recommendations for adults
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