Choose this training plan if your goal is not just to finish your next ultramarathon but be competitive or achieve a specific time goal. It can be used to prepare for a successful finish in races ranging between 50 miles and 100 km (62 miles) in distance. The plan is 19 weeks long and features six runs per week. It also includes five lactate threshold tests, in Weeks 3, 6, 9, 12 and 15. These tests are opportunities to use BSX Insight to measure your progress and adjust your training zones. Be sure to complete a lactate threshold test before you start the plan in order to establish your initial zones. You should also be able to run comfortably for at least 13 miles before you start.
Like all BSX Insight/Matt Fitzgerald Training Plans, the Beginner 50 Mile/100K Plan is based on the 80/20 Rule, which stipulates that 80 percent of total training time is spent at low intensity and the remaining 20 percent at moderate and high intensities. This approach is scientifically proven to produce better results for runners of all levels. See for yourself!