This 50 mile ultramarathon trail running plan is best for an athlete that has intermediate experience with running endurance events. Examples could be finishes in the marathon or 50k distance. Athletes using this plan are likely to be targeting a finish at the 50 mile distance vs. a competitive performance. This plan assumes a 50 mile race with approximately 2,000-5,000 ft of gain, such as, but not limited to, Ice Age Trail, JFK, Dead Horse, Dances With Dirt, Mohican, Marquette, or Indiana. This plan will start with weekly milage of 30 miles per week across five days of training per week, with an 8 mile first long run. The plan will top out with a 61 mile week and six days per week of training, two focused workouts per week, and a 23 mile long run. This plan includes an alternate set of weeks to allow for a practice/tuneup race in the latter half of the plan. Each fourth week is a scheduled recovery week with a reduced workload. This plan assumes access to trails, with reasonably rolling terrain.