Bonneville Motorcycle Speed Trials speed of 100mph, riding a Yamaha 350cc two-stoke motorbike. The event was held from 26-31 August. Valerie Thompson became the first female driver riding a motorcycle over 300 mph, reaching a speed of 489.663 km/h. The event was cancelled in 2015, due to poor salt flat conditions. Bonneville Motorcycle Speed Trials Bonneville Motorcycle Speed Trials (BMST) also known as AMA Land Speed Grand Championship is a motorcycle land speed racing event, held annually at Bonneville Speedway, US. The event is sanctioned by American Motorcyclist Association (AMA) and Fédération Internationale de Motocyclisme (FIM). Many AMA-certified US national speed records, and FIM-certified
Land speed record a speed of 91 mph (146.25 km/h) and receiving the sobriquet the "Fastest Girl on Earth". She drove a six-cylinder Napier motorcar, a 100 hp (74.6 kW) development of the K5, in a speed trial in Blackpool. A subsequent record was held by Lee Breedlove, the wife of Craig Breedlove, who piloted her husband's "Spirit of America - Sonic 1" to a record of in 1965, making her the fastest woman alive, . According to author Rachel Kushner, Craig Breedlove had talked Lee into taking the car out for a record attempt in order to monopolize the salt flats for