Big Bike Forums [more]
Great Cycling Forum with a lot of different areas. Good information. Friendly community.
http://www.bigbikeforums.com

Bike Blog Collection [more]
The best collection of bike blogs for people who ride by people who ride!
http://www.bikeblogcollection.com

Bike Coalition Community Forum and Chat [more]
A community where bicycle riders of all ages and skill levels can come together to exchange tips, share experiences, discuss, and overall further their knowledge and the spirit of the sport with each visit.
http://www.bikecoalition.com/

Bike Forums [more]
A collection of bicycle discussion forums.
http://www.bikeforums.net/

BikeWeb [more]
Resources for cycling, mountain biking, and BMX, featuring classifieds, trails and ride information, events and group information, forums, blogs, products, reviews, news, photos, videos and useful links.
http://www.bikeweb.net

BlogCyclingNews [more]
Stories about profesional and local cycling events and races. Discussion of all things related to cycling welcome, races, riders, equipment, doping, training, if it is about the bike bring it on.
http://blogcyclingnews.com/

Cycle Chat [more]
A friendly place for everyone with an interest in cycling. Chat forums, picture gallery, classified ads, and cycling web directory.
http://www.cyclechat.co.uk/

CycleBetter.Com [more]
We are an Aggregated Cycling Weblog site with over twenty great cycling blogs and weblog forums.
http://cyclebetter.com

Cycling [more]
Discussion areas, polls, links, and pictures.
http://www.communityzero.com/cycling

Cycling Community [more]
This is a community for people who love riding bikes and want to spend some online time communicating with others who feel the same way.
http://groups.msn.com/CyclingCommunity/

Cycling Forum [more]
A popular and civil online cycling discussion forum and community for passionate, talented and experienced cyclists around the world.
http://www.cyclingforum.com

Cycling Mob [more]
Cycling Mob is an online community dedicated to cycling. Covers training, bike gear, tips, photos, and bike advocacy.
http://www.cyclingmob.com

cyclingforums.com [more]
Buy sell or trade any cycling related item in this classified forum.
http://www.cyclingforums.com

Cyclismo [more]
A site for sharing information about cycling from commuting to racing.
http://www.cyclismo.org

Ebragger [more]
A social networking site for cyclists to chat about their daily ride. Start a group for you regular rides, or find a group to ride with. Share training tips and cycling knowledge. All cycling enthusiasts welcome!
http://ebragger.com

Edge 305 Owners Forum [more]
Interact with other owners, and learn how to optimize the use of the Garminn Edge bicycle computer. Learn about its trainer features, GPS, and wireless capabilities, how to measure speed, distance heart rate, and cadence.
http://www.edge305.com

Friendly Biking Forum [more]
The site is a friendly biking forum where people can ask questions and give advice.
http://www.freerideforever.co.uk

ibikeride, a mountain bike community for sharing skills, maintenance, kit and trails [more]
Online community website where you can browse, comment on, rate, post articles, use the forums, post videos yourself, as well as chat and email other riders.
http://ibikeride.com

Icebike [more]
Mailing list on winter cycling.
http://www.joeclark.org/icebike.html

Indoor cycling forum [more]
A forum where people can talk about indoor cycling.
http://www.pedal-on.com

London Fixed-gear & Single-speed [more]
A discussion forum focused on fixed gear (track bike) and single speed cycling in London, UK.
http://www.londonfgss.com/

MBE - Mountain biking forum, including cycling routes & phot [more]
Cycling and mountain biking forum, plus mountain biking photos and cycling routes. Share your questions and opinions with fellow MTBers!
http://www.mtbe.co.uk

Motorized Bicycle Engine Kit Forum [more]
Motorized bicycle forum. Message board with experienced motorized bicycle engine kit help and assistance building and making performance modifications to your gas and electric motor bicycle.
http://motorbicycling.com

MTB Path, your ride begins here [more]
MTB Path is a community, the place to express yourself! Create a blog, upload that video of your bike ride, share your ride photos, discuss your ride, share your tips and ideas in the forum. Be heard, seen and get connected with MTB Path!
http://mtbpath.com

NorCal Bikers [more]
A web log dedicated to bikers, mountain bikers, roadies, motorcyclists and anything on two wheels. Based in northern California.
http://norcalbikers.blogspot.com

Socal Trail Riders [more]
Southern California community of mountain bikers focused on riding and having fun. All ability levels welcome.
http://socaltrailriders.org/forum/

The Hub SA.co.za - Cycling Forums [more]
An online cycling community dedicated to cycling in South Africa.
http://www.thehubsa.co.za

The Rickshawforum [more]
Talk about pedicabs, rickshaws, provider. Meeting point for the professionals.
http://rickshawforum.com/forums/

The Wah Report [more]
This is a website about road racing, mountain bike racing and cyclocross racing. The website also includes tips on training.
http://jaredroy.blogspot.com/

TredzTalk [more]
UK cycling weblog with news and information about bikes and cycling, covering accessories and bike reviews, events, fixing bike problems, riding tips and everything bike-related by cycling enthusiasts.
http://www.tredzblog.co.uk

Two Six Nation [more]
A blog covering mountain biking, including the people, bikes, events, and gear that drive the sport and make us get out and ride!
http://twosixnation.net

velospace [more]
A bike community/social networking site. Bikes, photos, friends - caters to bicyclists from all walks of life.
http://www.velospace.org/

Wheel of a Deal [more]
Social bookmarking for cyclists and a new cycling deal most days
http://www.wheelofadeal.com

Yahoo! Groups: Power-assist [more]
Mailing list and discussion board.
http://tech.groups.yahoo.com/group/power-assist/