WUCA (formerly the Ultramarathon Cycling Association, or UMCA) is a non-profit organization dedicated to supporting ultra-cycling throughout the world. It holds the largest repository of cycling records for any type of bike, and continues to certify records for its members. WUCA members also participate in yearly challenges and support each other at events.
In the 423 days between 15 May 2016 and 11 July 2017, 24-year-old Amanda Coker (USA) rode 100,000 mi (160,934 km), improving – by 77 days – on Tommy Godwin's legendary 1939–40 record of riding 100,000 mi in 500 days, as verified by the World Ultracycling Association. Coker alternated between a road bike, a recumbent and a triathlon (or “tri”) bike, cycling on the same seven-mile loop of trails around Flatwoods Park in Tampa, Florida, USA, every day – often for over 12 hours at a time – and averaging 236.41 mi (380.47 km) per day.