The latter part of the run during full or half distance triathlon events can be very challenging. Indeed, the ability to run well under fatigue is a key performance determinant of long-distance triathlon. The aim of this session is to practice just that. This is a descending pace tempo session, aiming to fatigue the legs with some fast running at the start before settling into your ultra- and long-distance run pace. Efficient and fluid running is key during this session as you descend the pace for 1km, 2km and 3km with no rest in between.