Rides had to take place during an uninterrupted 24-hour period during the weekend of the Northern Hemisphere’s Summer Solstice (0:00 20/06/2020 to 23:59 21/06/2020 in riders local time zone). Time zones were fixed based on riders start location (riders couldn’t gain an hour by crossing a border!).

The distance for a ride is measured in a straight line from the start to the end of the ride. If a ride was 300 kilometres, but the finishing point was 200 kilometres from the start point ‘as the crow flies’, the ride is listed as being 200 kilometres for the purpose of this challenge.

Rides had to be self-supported, with no pre-arranged support, supply drops or friends and family meeting riders on the route. Much like in other ultra-distance events, we can’t tell if riders dodged this rule… but they’ll know and trust us, it won’t feel good!

For each ride, the clock started with the first turn of the cranks and ran continuously for 24 hours. While riders could stop to rest, eat, and sleep, the clock didn’t stop. The challenge was based on elapsed time, not moving time.