Colby Simmons (born 16 October 2003) is an American road cyclist who rides for UCI Continental team Visma–Lease a Bike Development.^[3]

His father Scott Simmons owns a construction business, and his mother is Holly Simmons. His older brother Quinn Simmons is also a cyclist. They grew up around the San Juan Mountains of southwestern Colorado. The family would go skiing in the winter and ride mountain bikes in the summer, and vacation in the mountains near Moab, Utah.^[4][5][6]

Simmons won his first national age-group title at the USA Cycling Amateur Road National Championships junior men’s age 15-16 criterium race in downtown Hagerstown, Maryland in June 2019.^[7] He won the junior 17-18 road race at the USA Cycling Amateur Road National Championships in Florida in 2021. Simmons signed for the Jumbo–Visma Development Team in September 2021.^[8] He represented Team USA in the Junior Men's Road Race at 2021 UCI Road World Championships.^[9]

In April 2023, he had a top-20 finish in the Volta Limburg Classic.^[10] Simmons finished second to Owen Cole in the U23 national road race at the USA Cycling Amateur Road Nationals in Roanoke, Virginia in June 2023.^[11] That month he also finished as runner-up at the United States National Criterium Championships in Knoxville, behind three-time winner Luke Lamperti.^[12]

He was selected for the 2023 UCI Road World Championships held in Glasgow, in August 2023.^[13]

• Colby Simmons at UCI
• Colby Simmons at Cycling Archives (archived)
• Colby Simmons at ProCyclingStats