Treadmill Workout - 35 minutes. Maximum Speed: 4.2 mph ; Peak Incline: 5.0%. Discover the latest in fitness technology with the iFit.com Adventure Series. Your workouts will be run from unique exercise videos that will automatically adjust the speed and incline of your iFit.com - compatible treadmill to ensure a great workout every time. Enjoy motivation and instruction from a certified personal trainer as you explore the crashing surf of world-famous beaches. iFit.com makes it easy to achieve your personal fitness goals!