An ultramarathon, also called ultra distance or ultra running, is any footrace longer than the traditional marathon length of 42.195 kilometres (26.219 mi).If Marathons have become too easy for your. What was once the pinnacle of achievement in a runner's life is now a stepping stone for extraordinary adventure in ultramarathoning.This book is training program In a more 21 weeks you can be ready for a 100-miles. This schedule is ideal for busy runners looking to take on an ultra-marathon. 100-Mile Ultra-Marathon Training schedule includes: 16 Week trainig plan ― In a 21 weeks you can be ready for a 100-miles. This schedule is ideal for busy runners looking to take on an ultra-marathon. The Ultra Marathon training plan key.. Running Log ― 21 Week for keep record training (Duration, Distance, Average Pace)