Cog Marketplace

Cog is the marketplace for cyclists — buy, sell and rent bikes and gear, wherever you ride.

Buy & sell
List your bike in minutes and reach riders everywhere, with no fee to list. Every bike listing is verified, so you know what you're buying.

Rent & rent out
Renting a bike for a trip, or renting yours out when you're not using it? Cog's rental marketplace connects riders and owners directly, backed by 7-day buyer protection.

Cog Fit — free AI bike fit
Get a fit check from your phone. Prop it up on a turbo trainer, pedal for 20 seconds, and Cog Fit analyses your position on-device — nothing is ever uploaded or recorded. It's guidance, not a replacement for a professional fitter, and we're improving it with real rider feedback.

Find your community
Discover local bike shops, cycling events near you, and routes shared by other riders. Join the conversation and never ride alone.

Bike fitters
Want a professional opinion? Browse a directory of fitters to get properly measured up.

Plan your ride
Built-in route planning helps you find the best way from A to B — whether it's a quick commute or a multi-day tour.

Built for the whole world
Cog supports riders in 195 countries with translations in 33 languages, so wherever you're based, Cog speaks your language.

Whether you're upgrading your ride, clearing out the garage, or just looking for your next adventure, Cog is where cyclists do business.