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CardioTested
A woman walking at a standing desk by a window63 × 28.5 in open
Best for all-day walkingNot reviewed yet

LifeSpan TR1200-DT3 Under Desk Treadmill

The office-grade under-desk treadmill: a 350 lb rating, a 6-hour-a-day duty cycle and a real warranty.

4.0Our rating · from specs
$1,199 to $1,499
Typical price

Usually $1,199 to $1,499 (list $1,499). Prices change often, so the retailer has today's.

Written by The CardioTested test teamUpdated November 5, 2026

We haven't written a full review of the LifeSpan TR1200-DT3 yet. Everything here comes from the manufacturer's specs and our rating formula, which treats every machine the same way. A full review follows after we've tested one.

How we rated the LifeSpan TR1200-DT3

4.0
Motor and deck
4.8
2.25 HP continuous, 20 x 50 in belt, 350 lb limit
Speed and features
2.9
4 mph top speed, flat deck
Warranty
4.2
Lifetime frame, shorter motor and parts cover
Fits a home
4.3
63 x 28.5 in
Value
3.3
You pay a premium for the name or the screen

Our rating is out of 5 and uses the same formula for every machine in a category: motor and deck, features, warranty, how well it fits a home, and value for the typical price. Until we bench test a machine, the score comes from its published specs. How we rate

What we measure

Bench test scheduled

We haven't measured this one yet. When our unit is set up, it gets the same checks as every machine, and the results go here:

  • Noise from 3 ft at 3, 6, 9 and 12 mph
  • Incline at the top setting, with a digital level
  • Watts at the wall, idle, walking and running
  • Assembly time for one person
  • Folded size, measured with a tape

Floor plan, from the maker's dimensions

LifeSpan TR1200-DT363 in28.5 in
Open, 63 × 28.5 in

LifeSpan TR1200-DT3 specs

SpecificationLifeSpan TR1200-DT3
Motor2.25 HP continuous
Belt20 x 50 in
Speed0.4–4 mph
User weight limit350 lb
Footprint (L × W × H)63 × 28.5 × 7.25 in
FoldedDoes not fold
Machine weight119 lb
ConsoleDesktop console with Bluetooth
WarrantyLifetime frame, 3 yr motor, 2 yr parts, 1 yr labor
StatusCurrent model

Manufacturer's published specs. We check dimensions with a tape when our unit arrives.

How it compares

Swipe sideways to see every model

LifeSpan TR1200-DT3(this review)WalkingPad A1 ProWalkingPad C2
Our rating4.0 / 53.0 / 54.0 / 5
Typical price$1,199–1,499$499–699$399–599
Motor2.25 HP continuous1.0 HP brushless1.0 HP brushless
Belt20 x 50 in16.5 x 47 in16.5 x 47 in
Top speed4 mph3.7 mph3.7 mph
Incline——0%
Weight limit350 lb230 lb220 lb
Footprint63 × 28.5 in56.4 × 21.5 in56.4 × 20.9 in
FoldsNoYesYes
WarrantyLifetime frame, 3 yr motor, 2 yr parts, 1 yr labor1 yr1 yr

Manufacturer specs. Measured noise is added once we've tested a machine.

Check today's price

Usually $1,199 to $1,499 (list $1,499). Prices change often, so the retailer has today's.