cycling is not safe. At least when your off road the ground has some slip so you tend not to graze yourself to badly. Still it could I've been involved whith an event that had a fatal crash. I decided to to race after seeing just how much kids will push themsleves infront of a crowd and their parents. I've ben luck with high speed crashes. I came off at 20mph (accurate to +-1mph) went along on my face to get up and carry on.