Fastest completion of 100,000 miles by bicycle (WUCA)
Who
Amanda Coker
What
423 day(s)
Where
United States ()
When

In the 423 days between 15 May 2016 and 11 July 2017, 24-year-old Amanda Coker (USA) rode 100,000 miles (160,934 km), improving – by 77 days – on Tommy Godwin's legendary 1939–1940 record of riding 100,000 miles in exactly 500 days. The record was verified by the World UltraCycling Association (previously UltraMarathon Cycling Association).

Amanda 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 miles (380.47 km) per day.

On 14 May 2017, Amanda Coker had already set a record for the greatest distance ever cycled in a year, with 86,573.2 miles (139,326.34 km) cycled since 15 May 2016.

The World UltraCycling Association is the leading international organization dedicated to ultracycling. The WUCA governs and certifies record attempts in several categories, including cross-country, cross-state/province as well as fixed-distance attempts (100 miles, 200 miles, 1,000 km) and fixed-time attempts (6 hours, 12 hours, 24 hours). Also, the WUCA governs and certifies attempts in two categories called HAMR (Highest Annual Mileage Ridden) and 100,000 Miles, both recognized by Guinness World Records.