621T
611T
Evolve
MOTOR
2.5 treadmill duty motor, provides smooth power at all speeds 2.25 treadmill duty motor, provides smooth power at all speeds 2.25 treadmill duty motor, provides smooth power at all speeds
Speed adjustable from
1-10 mph
Speed adjustable from
1-10 mph
Speed adjustable from
1-6 mph
CONSOLE
10 programs offer pre-set workouts 7 programs offer pre-set workouts 2 standard programs offer pre-set workouts
Pulse monitor contacts in hand grips Thumb pulse monitor 20 x 50 mm LCD
Preset buttons for speed adjustment Preset buttons for speed adjustment  
4 windows w/ brickyard + 1 LCD window 2 LED windows w/ brickyard  
WORKOUT AREA
18" x 50" / 46 x 127 cm workout area 18" x 45" / 46 x 114 cm workout area 17" x 45" / 43 x 114 cm workout area
AEROsoft™ Deluxe cushion system AEROsoft™ Plus cushion system  
Motorized incline adjustment, 0-10 percent grade with quick keys to adjust grade Motorized incline adjustment, 0-10 percent grade with quick keys to adjust grade  
FRAME
Durable steel frame Durable steel frame Solid, ultra-compact frame folds to 10" for easy storage
Treadmill folds for easy storage Treadmill folds for easy storage  
MAX WEIGHT
275 lbs / 124 kg 250 lbs / 113 kg 250 lbs / 113 kg
WARRANTY
10 Year Frame
5 Year Motor
1 Year parts & 90 Days Labor
10 Year Frame
3 Year Motor
1 Year parts & 90 Days Labor
10 Year Frame
3 Year Motor
90 Day Parts & Labor
compare treadmills
Compare Specifications Compare Features