Run in conjunction with it's older brother, the Susitna 100, the Little Su 50k travels the same course but turns to it's own separate course on Flat Horn Lake - see Little Su Course. It finishes where it begins at the Point Mackenzie General Store for a total distance of 50 kilometers (approx. 31.1 miles).

This race offers a distance that will appeal to the sprinters as well as those looking for a day adventure. It will also appeal to those who are here to watch and/or support someone doing the longer 100 mile race.

Required gear: is a light source (headlamp or bike light for example) and a rear flashing light to be used after sunset.
and 2 quarts of water that is insulated (Camelback or insulated Nalgene bottles).