50 km (road), men

What to remember

San Francisco, October 8, 2022: at the Ruth Anderson Memorial Endurance Run, American CJ Albertson covered 50 km on the road in 2 h 38 min 43.00 s. It is the fastest run ever over the distance.

The 50 km is the doorway to ultramarathon running, the family of races longer than the marathon's 42.195 kilometres. It is the shortest of the common ultra distances. Albertson's average works out at 18.90 km/h (11.74 mph), held for more than two and a half hours.

A long-distance runner, Albertson set this time on the road, the surface of the oldest and largest ultramarathons, such as the Comrades Marathon and the Two Oceans Marathon.