The ULTRA SERIES offers 14 ultramarathon races (>42.195 km). Each race is unique in terms of its design (loop, out-and-back), surface (pavement, trail, track), topography (flat, hilly), and technicality (smooth, rocky, rooty).
The TRAIL SERIES offers 12 races ranging in distance from 25 km to 34 km. These races are primarily on trail but may be partly on rural road.
The 50K SERIES offers 13 races ranging in distance from 50 km to 58 km. Each race is unique in terms of its design (loop, out-and-back), surface (pavement, trail, track), topography (flat, hilly), and technicality (smooth, rocky, rooty).
You may enter any number of races in any of the three Series (ULTRA/TRAIL/50K). When you enter your first race in a Series, you are automatically registered in that Series. There are no Series registration fees.
