It's the bi-weekly Wednesday night ride, or Ciclopaseo, which has become an institution in Bogotá cycling, at least on the city's north end.
The rides make for a fun, social time with other cyclists, even if Bogotá's urban scenery isn't so spectacular, especially at night. But the rides demonstrate that cycling has a place and a fun one, in this big and chaotic city.
But, activists or not, the cyclists do make an impression. On the gritty Ave. Decima people asked what was going on and stood in doorways to marvel at this unusual phenomenon. With time, hopefully, mass cycling will become a common sight in Bogotá.
By Mike Ceaser, of Bogota Bike Tours