Worried about building up safely for the long runs at the beginning of your training plan? This 8-week training block is focused on a progression of long runs that will ensure you can seamlessly transition to the full 20-week plan when it begins. Pre-training blocks also include basic core routines and suggested daily/weekly mileage to prepare for the full training plan. Blocks are available to prepare for the 50k, 100k, and 100-mile plans.