2018 Outdoor Schedule posted by: Adam Zuidema March 16, 2018 No Comments 2018 Outdoor RACE SCHEDULE APRIL WORKDAYS 8, 15, 22, 29 MAY 6, 20 JUNE 3, 17 JULY 1, 15, 29 AUG. 12, 26 SEPT. 31st Annual DirtRunners Challenge Sept 8 & 9 (Rain Date Sept 16)