This week, runners taking the 500 Mile and 400 Mile challenges begin running daily. Advanced athletes should add a 20–25-minute session (3 miles) of easy running on Monday, Wednesday, and Friday. Do these runs at the opposite time of day that you do your hard workout. Sunday: Easy 8-mile run on grass or dirt with friends. (400 Mile: 7 miles/300 Mile: 6 miles) Week 4 Total: 500 Mile–35 miles; 400 Mile–30 miles; 300 Mile–21 miles Mo. 1 Total: 500 Mile–134 miles; 400 Mile–108 miles; 300 Mile–90 miles Remember to post your miles on - See more at: