- This event has passed.
IAU 24H World Championships
December 1, 2023 @ 12:00 pm – December 2, 2023 @ 12:00 pm PST
The IAU 24 Hour World Championship is an international 24-hour run competition organized by the International Association of Ultrarunners (IAU). Since 2015, the World Championship has alternated annually with the IAU 100 km World Championships.