Group Riding Laws in Colorado
Last reviewed by BikeSize EditorialThis guide is for general information only and is not legal advice. Laws change - verify current rules with your state DOT or a licensed attorney before relying on this for any legal matter. Read full disclaimer.
The rule
Colorado permits cyclists to ride two abreast on the roadway. Two abreast permitted; persons riding two abreast shall not impede the normal and reasonable movement of traffic and shall ride within a single lane. C.R.S. § 42-4-1412(6). See C.R.S. § 42-4-1412(6) (Operation of bicycles - two-abreast clause). Read the national group riding laws guide for comparison. For low-light road and group visibility, compare bike lights for commuting and unlit roads.
Statute
What this means in practice
Group rides in Colorado can ride two abreast on most roads. Keep an eye on traffic behind — if a faster vehicle can't safely pass, single up.
Bigger roads, longer rides
Size a road bike for shoulders, group rides, and rural highways
Highway-access and group-riding rules favour riders who can hold a straight line at speed. Start with a frame that fits.
See the road sizing guide