Longest one-day cycle race

The longest one-day `massed start' road race is the 551-620km 342-385miles Bordeaux-Paris, France event. Paced over all or part of the route, the highest average speed was in 1981 with 47.186km/h 29.32mph by Herman van Springel (Belgium) (b. 14 Aug 1943) for 584.5km 363.1 miles in 13hr 35min 18sec. The race is no longer held as an official professional race, but is still held in an amateur capacity.