The 2.8 mile off-road loop means your race can be just under 5k or even over 50k and anywhere in between. You decide how many laps you're going to do on the day within the 6-hour time limit. If you're looking to cover a marathon distance you'll need to complete 10 laps and a half marathon will be 5 laps. The course isn't flat but there aren't steep inclines, 'lumpy' is probably the best description. Each lap has around 200ft of elevation.