Worldwide Critical Mass Hub
- A guide to local Critical Mass sites in cities all over the world. Also includes links to worldwide CM, pro-bike, and anti-car sites.
- http://critical-mass.info/

Critical Mass in Bergen
- Site no longer updated but has historical information on this groups efforts.
- http://eero.no/nvh/criticalm.htm

You Never Bike Alone - a movie about Vancouver Critical Mass
- Feature-length documentary showing how cyclists in Vancouver, Canada, are mobilizing and changing the face of the city.
- http://www.youneverbikealone.com/

Critical Mass Edmonton, 2000 to 2001
- An archival recreation of Critical Mass Edmonton content from 2000 through 2001. Among the resources are 'bLog entries, articles and photos.
- http://www.madcatx.com/cmedmonton/

Pedaling to Save the City
- An examination of San Francisco's Critical Mass bicycling event in the context of the global fight against automobile dependency
- http://www.runmuki.com/paul/writing/urban.html

Critical Mass Grand Rapids
- Home of the Grand Rapids, Michigan, Critical Mass ride. Site features info, photos, and flyers. Also includes links to other Michigan CM sites.
- http://www.mediamouse.org/cm/

Critical Mass Victoria, BC
- Critical Mass information pertaining to Victoria, British Columbia. Sparse information seems limited to general announcements.
- http://www.socialchangenow.ca/criticalmass

Boston Critical Mass
- Bike advocacy organization; includes ride information, photos, and mailing list.
- http://www.bostoncriticalmass.org/

Critical-mass.org
- Cycling advocacy list of sites.
- http://www.critical-mass.org/

Chicago Critical Mass
- Features news, events and information on the group's activities, press releases, annual art show, and contacts. Also, offers a photo gallery, flyers and FAQs.
- http://www.chicagocriticalmass.org/

Yahoo! Groups: Critical Mass
- Message board for Critical Mass issues around the world.
- http://groups.yahoo.com/group/critical-mass/

Critical Mass in Israel
- Meets in Tel Aviv, Jerusalem, Haifa and Rehovot, and aims to promote alternatives to travel.
- http://bike.org.il/cm/index_e.html