This machine has a massive range of incline from 6 decline 40 incline the nordic track x7i incline treadmill can be used by anyone no matter what size as it comes guaranteed with a lifetime frame warranty 10 year motor warranty and a 2 year parts and labour warranty subject to registration within 28 days of purchase walking on the treadmill at the highest incline will burn calories like crazy so imagine running on it with 0 20kph this treadmill will get you running and really start drop