This is an ultra-marathon (50km) specific training schedule that is based on a standard amount of volume for an experienced runner looking to race the ultra-distance (50km). This schedule is for beginner to intermediate ultra-runners who are coming into the plan with consistent running already, and may have completed an ultra-marathon (50km) previously, or are looking to debut at the distance. This schedule starts at 42 miles per week and peaks at 66 miles, by running up to six days a week. ...