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When you don’t have time to get out for a run, the treadmill is a great substitute. In our opinion this is the best treadmill workout for marathon and ultramarathon runners who are looking to maximise their running gains when the treadmill is their only option. Using max incline this isn’t an easy workout, but it turns everything up to 11 and if you can stick with it, delivers incredible marathon and ultramarathon training results in a very short time. Next time the only running you can squeeze in is on the treadmill, hit this session up and watch your fitness soar!
