Anthony Ryan lost most of his front teeth when he was hit by a car while riding his bike. The driver was running a red light, and Ryan was in the hospital for three days, but he was found at fault in the collision. Nonetheless, he’s determined to cycle on. The co-organizer of this year’s local Ride of Silence, an international tradition memorializing cyclists killed or injured on city roads, Ryan was joined by dozens of other cyclists wearing either the red armband of someone who has suffered an injury while riding, or the black armband of those who had lost loved ones to traffic collisions.

This year, San Francisco’s Ride of Silence snaked its way through about 11 miles of the city’s most hazardous roadways for pedestrians and cyclists. The flock of bicycles was protected last night, however, by police officers on motorcycles who led the way and halted traffic as necessary. They stopped occasionally to affix flowers to signs commemorating fallen cyclists at the locations they were killed.

These are some of their stories.