WalkingPad Review: C2 vs Z1 vs P1 vs A1 Pro vs X21
Last updated: September 2026
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WalkingPad offers several folding treadmills, from compact under-desk walking machines to faster upright treadmills. Walking Counts compared five models that draw substantial search interest: the C2, Z1, P1, A1 Pro and X21.
The comparison uses current manufacturer-published specifications.
Which WalkingPad Should You Buy?
The C2, Z1, P1 and A1 Pro are primarily walking-focused compact, foldable machines. The X21 is materially different: a faster upright foldable treadmill reaching 7.5 mph.
WalkingPad C2
A compact folding walking machine that pairs FootSense speed adjustment with a remote and the KS Fit app, topping out at 4 mph.
Read the reviewWalkingPad Z1
At 51 lb, the lightest of the C2, Z1 and A1 Pro, with a 242-lb capacity and the longest walking area of the four walking models.
Read the reviewWalkingPad P1
The classic WalkingPad format: a 47 × 16.5 in walking area, FootSense and a remote, with speeds from 0.3 to 3.75 mph.
Read the reviewWalkingPad A1 Pro
The current U.S. configuration is rated to 300 lb — the highest capacity here — with a wider 16.5-in walking area and a 3.75 HP brushless motor.
Read the reviewWalkingPad X21
An upright double-folding treadmill that reaches 7.5 mph — a different kind of machine from the four walking pads.
Read the reviewWalkingPad Models Compared
| Model | Best For | Speed | Walking/Running Area | Capacity | Weight | Controls | Folded Size |
|---|---|---|---|---|---|---|---|
| C2 | FootSense / everyday desk walking | 1–4 mph | 47.2 × 15.7 in | 220 lb | 55 lb | App + FootSense + remote | 32.5 × 20.4 × 5.4 in |
| Z1 | Lightweight compact walking | 1–4 mph | 47.6 × 15.7 in | 242 lb | 51 lb | App + remote | 31.8 × 22 × 5.4 in |
| P1 | Simple/classic walking | 0.3–3.75 mph | 47 × 16.5 in | 220 lb | 62 lb | FootSense + remote | 32.5 × 21.5 × 5 in |
| A1 Pro | Higher-capacity under-desk walking | 0.5–3.75 mph | 47 × 16.5 in | 300 lb (current U.S.) | 63 lb | App + FootSense + remote | 32.5 × 21.5 × 5 in |
| X21 | Faster walking/jogging | 1–7.5 mph | 47.6 × 18.1 in | 240 lb | 81 lb | App + SpeedDial | 39.6 × 27.9 × 8.8 in |
Specifications come from each model's current dedicated WalkingPad product page. Where WalkingPad pages disagree, we use the dedicated page. Confirm details on the listing before buying.
WalkingPad vs Walking Pad: What's the Difference?
WalkingPad is the brand and product name used by KingSmith. walking pad is also widely used as a generic term for compact walking treadmills from many makers.
On Walking Counts, “WalkingPad” means the brand and lowercase “walking pad” means the category. For the category as a whole, see the best walking pads.
WalkingPad C2 vs Z1
These two share a 1–4 mph speed range, a 15.7-in walking width, a remote, KS Fit and a fully assembled folding design. The differences are in control, weight and capacity.
C2
- 55 lb
- 220-lb capacity
- 47.2 × 15.7 in area
- 1–4 mph
- FootSense, remote, app
Z1
- 51 lb
- 242-lb capacity
- 47.6 × 15.7 in area
- 1–4 mph
- Remote, app (no FootSense listed)
The C2's distinctive advantage is FootSense. The Z1 is about 4 lb lighter, has a slightly longer walking area and a higher manufacturer-stated capacity. Neither is universally better — pick the C2 for foot-based speed control, the Z1 for lighter handling and more capacity.
Our dedicated page: WalkingPad C2 review.
WalkingPad P1 vs A1 Pro
Both have a 47 × 16.5 in walking area, a similar top speed (3.75 mph), a foldable format, a remote and FootSense.
P1
- 220-lb capacity
- Classic/basic positioning
- Brush motor, 746 W input
- 0.3–3.75 mph
A1 Pro
- 300 lb (current U.S. configuration)
- 3.75 HP brushless motor
- KS Fit app
- 63-lb machine
The A1 Pro's main objective differences are its higher current U.S. capacity and its upgraded motor and app ecosystem. The P1 suits walkers happy with the basic format.
WalkingPad C2 vs A1 Pro
C2
- 220-lb capacity
- 55 lb
- 15.7-in walking width
- Up to 4 mph
- FootSense, app, remote
A1 Pro
- 300 lb (current U.S. configuration)
- 63 lb
- 16.5-in walking width
- Up to 3.75 mph
- FootSense, app, remote
The C2 is lighter and marginally faster by published top speed. The A1 Pro offers greater manufacturer-stated capacity and a wider walking area. Both have the same three control methods.
Why the WalkingPad X21 Is Different
The X21 shouldn't be treated as another under-desk walking pad. It has an upright treadmill frame, a 7.5 mph top speed, an 18.1-in running-area width, a SpeedDial, an 81-lb machine weight and a double-fold storage design. Current specs list no handheld remote.
It is better described as a compact foldable treadmill for walking and faster workouts. For how the two formats differ, see walking pad vs treadmill.
How Small Do WalkingPad Treadmills Fold?
- C2: 32.5 × 20.4 × 5.4 in
- Z1: 31.8 × 22 × 5.4 in
- P1: 32.5 × 21.5 × 5 in
- A1 Pro: 32.5 × 21.5 × 5 in
- X21: 39.6 × 27.9 × 8.8 in
The C2, Z1, P1 and A1 Pro use the brand's compact walking-focused folding concept, ending up around 5 in thick. The X21 folds an upright treadmill into a longer, wider and thicker package. Only store any model upright if WalkingPad's instructions for that exact model allow it.
What Is WalkingPad FootSense?
FootSense uses your position on the walking surface to support speed control on compatible WalkingPad models. In this comparison it is listed for the C2, P1 and A1 Pro.
The Z1's current specs list app and remote control rather than FootSense, and the X21 uses the app plus a SpeedDial. FootSense isn't available on every WalkingPad.
Which WalkingPad Models Use the KS Fit App?
Current official specs list KS Fit support for the C2, Z1, P1, A1 Pro and X21. Features can differ by model, so check each listing for the functions you need.
Which WalkingPad Is Best for Under a Standing Desk?
- C2: 4.9 in tall, 20.4 in wide unfolded; FootSense, remote, app
- Z1: 4.1 in tall, 22 in wide unfolded; remote, app
- P1: 5 in tall, 21.5 in wide unfolded; FootSense, remote
- A1 Pro: 5 in tall, 21.5 in wide unfolded; FootSense, remote, app
All four are low-profile walking machines. The Z1 is the lowest, the C2 the narrowest. We don't include the X21 here because of its upright treadmill frame. More options: best under-desk walking pads.
WalkingPad Weight Limits Compared
- C2: 220 lb
- Z1: 242 lb
- P1: 220 lb
- A1 Pro: 300 lb (current U.S. configuration)
- X21: 240 lb (dedicated technical specification page)
Capacity is model-specific. Stay within the manufacturer's published limit for your exact model.
How Fast Do WalkingPad Treadmills Go?
- C2: up to 4 mph
- Z1: up to 4 mph
- P1: up to 3.75 mph
- A1 Pro: up to 3.75 mph
- X21: up to 7.5 mph
The four walking models cover casual to brisk walking. The X21's 7.5 mph extends into jogging, which is why it serves a different use case.
WalkingPad C2 Review
The C2 is the control-focused pick of the walking models: FootSense, a remote and KS Fit in a 55-lb folding frame with a 47.2 × 15.7 in walking area and a 220-lb capacity.
- Speed
- 1–4 mph
- Walking area
- 47.2 × 15.7 in
- Max user weight
- 220 lb
- Motor
- 3 HP brushless
- Net weight
- 55 lb
- Folded
- 32.5 × 20.4 × 5.4 in
- Unfolded
- 56.9 × 20.4 × 4.9 in
- Controls
- Remote, KS Fit app, FootSense
- Assembly
- Foldable, fully assembled
Why choose it?
You get three ways to change speed — FootSense, the remote and the app — so you can adjust pace without reaching for anything if you prefer foot-based control.
What makes it different?
Among the three lighter walking models (C2, Z1, A1 Pro), it is the only one combining FootSense with a 4 mph top speed.
What to consider
Its 220-lb capacity and 15.7-in walking width are the lowest and narrowest in the walking-focused group, tied with the P1 on capacity. WalkingPad also shows some older, inconsistent C2 figures on bundle pages; we use the current dedicated product page.
Pros
- FootSense speed control
- Remote plus KS Fit app
- Up to 4 mph
- Arrives fully assembled
- Folds to 5.4 in thick
Cons
- 220-lb capacity
- 15.7-in walking width
- Heavier than the Z1
Best for: Desk walkers who want FootSense and several control options.
Not ideal for: Users over 220 lb or anyone wanting a wider walking area.
Read our full WalkingPad C2 review
Source: walkingpad.com/products/walkingpad-c2-foldable-walking-machine
WalkingPad Z1 Review
The Z1 trims weight and height: 51 lb net, 4.1 in tall unfolded, a 47.6 × 15.7 in walking area and a 242-lb capacity, controlled by remote and KS Fit.
- Speed
- 1–4 mph
- Walking area
- 47.6 × 15.7 in
- Max user weight
- 242 lb
- Motor
- 2.25 HP brushless
- Net weight
- 51 lb
- Folded
- 31.8 × 22 × 5.4 in
- Unfolded
- 56.1 × 22 × 4.1 in
- Controls
- Remote, KS Fit app
- Assembly
- Foldable, fully assembled
Why choose it?
If you'll move or fold the machine often, its 51-lb net weight is the lowest published figure among the C2, Z1 and A1 Pro.
What makes it different?
Its 4.1-in unfolded height is the lowest listed in this comparison, and its 242-lb capacity sits above the C2 and P1.
What to consider
Current specs list the remote and app but not FootSense, and its 2.25 HP motor is the smallest brushless motor listed here.
Pros
- 51 lb net weight
- 242-lb capacity
- 4.1-in unfolded height
- Remote plus KS Fit app
- Fully assembled
Cons
- No FootSense listed
- 15.7-in walking width
- Smallest listed brushless motor
Best for: People who want a light, low-profile pad they'll fold and move regularly.
Not ideal for: Anyone set on FootSense control.
Read our full WalkingPad Z1 review
Source: walkingpad.com/products/walkingpad-z1-under-desk-treadmill
WalkingPad P1 Review
The P1 keeps things simple — a brush motor with a 746 W power input, FootSense, a remote and a 220-lb capacity in a 5-in-thick folding frame.
- Speed
- 0.3–3.75 mph
- Walking area
- 47 × 16.5 in
- Max user weight
- 220 lb
- Motor
- Brush motor, 746 W power input
- Net weight
- 62 lb
- Folded
- 32.5 × 21.5 × 5 in
- Unfolded
- 56.5 × 21.5 × 5 in
- Controls
- Remote, FootSense
- App
- KS Fit
Why choose it?
It offers the same 16.5-in walking width as the A1 Pro and the slowest starting speed here (0.3 mph), in a straightforward package.
What makes it different?
It is the only model in this comparison listed with a brush motor rather than a brushless one. WalkingPad lists power input in watts, not horsepower, so we don't convert it.
What to consider
Its top speed is 3.75 mph and its capacity is 220 lb. WalkingPad lists a 62-lb net weight.
Pros
- 16.5-in walking width
- FootSense plus remote
- Starts at 0.3 mph
- Folds to 5 in thick
Cons
- 220-lb capacity
- Brush motor
- 62 lb net weight
Best for: Walkers who want the classic WalkingPad format without extras.
Not ideal for: Users over 220 lb or those who want a lighter machine.
Read our full WalkingPad P1 review
Source: walkingpad.com/products/walkingpad-p1-foldable-treadmill
WalkingPad A1 Pro Review
The A1 Pro builds on the classic 47 × 16.5 in format with a 3.75 HP brushless motor, FootSense, remote, KS Fit and a 300-lb capacity in its current U.S. configuration.
- Speed
- 0.5–3.75 mph
- Walking area
- 47 × 16.5 in
- Max user weight
- 300 lb (current U.S. configuration)
- Motor
- 3.75 HP brushless
- Net weight
- 63 lb
- Folded
- 32.5 × 21.5 × 5 in
- Unfolded
- 56.5 × 21.5 × 5 in
- Controls
- Remote, KS Fit app, FootSense
- Assembly
- Foldable, fully assembled
Why choose it?
It has the highest manufacturer-stated capacity of the five and keeps all three control methods.
What makes it different?
WalkingPad's technical table references more than one capacity configuration; the current U.S. version is sold at 300 lb. Older or regional units may differ, so check the listing.
What to consider
At 63 lb it is the heaviest of the four walking models, and its top speed is 3.75 mph.
Pros
- 300-lb current U.S. capacity
- 16.5-in walking width
- 3.75 HP brushless motor
- FootSense, remote and app
- Fully assembled
Cons
- 63 lb — heaviest walking model here
- 3.75 mph top speed
- Capacity varies by configuration
Best for: Heavier users or anyone wanting the wider walking area with full controls.
Not ideal for: People who need to lift and move the pad often.
Read our full WalkingPad A1 Pro review
Source: walkingpad.com/products/walkingpad-a1-pro-foldable-treadmill
WalkingPad X21 Review
The X21 is a compact foldable treadmill rather than an under-desk walking pad: an upright frame, 1–7.5 mph, a 47.6 × 18.1 in running area, SpeedDial and KS Fit, at 81 lb.
- Speed
- 1–7.5 mph
- Running area
- 47.6 × 18.1 in
- Max user weight
- 240 lb (dedicated product page)
- Motor
- 3.75 HP brushless
- Net weight
- 81 lb
- Folded
- 39.6 × 27.9 × 8.8 in
- Unfolded
- 55.8 × 27.9 × 41.4 in
- Controls
- SpeedDial, KS Fit app (no remote)
- Assembly
- Double-fold, fully assembled
Why choose it?
It is the only model here built for jogging-level speeds, with the widest belt area (18.1 in).
What makes it different?
It stands 41.4 in tall unfolded with an upright frame, and uses a SpeedDial instead of a handheld remote.
What to consider
It's the heaviest and bulkiest when folded. Its dedicated spec page lists 240 lb, while some WalkingPad collection pages show 242 lb; we use 240 lb.
Pros
- Up to 7.5 mph
- 18.1-in running width
- 3.75 HP brushless motor
- SpeedDial plus app
- Double-fold storage
Cons
- 81 lb
- Thickest folded size
- No handheld remote
- Not an under-desk pad
Best for: Anyone wanting brisk walking and jogging in a folding treadmill.
Not ideal for: Walking beneath a standing desk.
Read our full WalkingPad X21 review
Source: walkingpad.com/products/walkingpad-x21-foldable-treadmill
Which WalkingPad Is Right for You?
Choose C2 if FootSense control plus compact under-desk walking is your priority.
Choose Z1 if you want the lightest machine among the C2, Z1 and A1 Pro, with a 242-lb capacity.
Choose P1 if you want the straightforward classic WalkingPad format.
Choose A1 Pro if you want the higher 300-lb current U.S. capacity and a wider walking area.
Choose X21 if you want a folding treadmill capable of much higher speeds rather than an under-desk walking pad.
How We Compared WalkingPad Models
We compared current manufacturer-published information on speed, walking/running area, weight capacity, machine weight, motor, controls, FootSense, app support, folding design, folded dimensions and intended use.
This is a research-based comparison and does not imply Walking Counts physically tested these treadmills. Read how we review products.
WalkingPad FAQ
Is WalkingPad a brand?
Yes. WalkingPad is a product brand from KingSmith. People also use lowercase “walking pad” for the wider category of compact walking treadmills.
Which WalkingPad is best?
It depends on use: C2 for FootSense control, Z1 for the lightest frame, P1 for the simple classic format, A1 Pro for the highest capacity, and X21 for faster workouts.
What is the difference between WalkingPad C2 and Z1?
Both run 1–4 mph. The C2 adds FootSense and weighs 55 lb with a 220-lb capacity and 47.2 × 15.7 in area. The Z1 weighs 51 lb, is rated to 242 lb and has a 47.6 × 15.7 in area, with remote and app control.
What is the difference between WalkingPad P1 and A1 Pro?
They share a 47 × 16.5 in area, FootSense and a remote. The P1 has a brush motor (746 W input) and 220-lb capacity. The A1 Pro has a 3.75 HP brushless motor, KS Fit, weighs 63 lb and is rated to 300 lb in its current U.S. configuration.
Which WalkingPad has the highest weight limit?
Among these five, the current U.S. A1 Pro configuration, rated to 300 lb.
Which WalkingPad is lightest?
The Z1, at 51 lb. The P1 is listed at 62 lb.
Can WalkingPad treadmills go under a desk?
The C2, Z1, P1 and A1 Pro are low-profile walking machines suited to standing-desk use. The X21 has an upright frame and isn't an under-desk treadmill.
Does WalkingPad have incline?
None of these five lists incline in its current specifications. If incline matters, see the best walking pads with incline.
Does WalkingPad work with an app?
WalkingPad's current specs list KS Fit for all five: C2, Z1, P1, A1 Pro and X21.
Can you run on a WalkingPad?
The X21 reaches 7.5 mph. The C2, Z1, P1 and A1 Pro are walking-focused, topping out at 3.75–4 mph.
Continue Your Research
WalkingPad and KingSmith are third-party brands. Walking Counts is not affiliated with, endorsed by, authorised by or operated by WalkingPad or KingSmith. Product names are used for identification only.