Ride in memory of Olympic snowboarding coach Nelson Pratt
Hundreds of cyclists are riding through Hampshire in memory of a renowned snowboarder and Olympic and army team coach who took his own life.
The Nelson's Tour De Test Valley is being held in aid of charity Campaign Against Living Miserably (Calm), which aims to help prevent male suicide.
The ride has been set up by friends and family of Nelson Pratt, from Grateley, who died in July 2012 aged 33.
It has three routes and the longest is described as Nelson's favourite ride.
Participants are riding either 25 miles (40 km), 50 miles (80 km) or 100 miles (160 km) from Grateley.
The ride is modelled on the cycling tours of France, and each person has been issued with an electronic chip to record their times.
His friend Marcus Chapman, who organised the ride, described Nelson as a "vibrant and brilliant man".
He said: "We want this ride not just to be a celebration of Nelson's life, but to try to encourage young men to reach out to the people around them."