US:
RUSA
Alaska Cycling Endeavors
Audax Atlanta
Audux USA
Boston Brevet Series
Central New York Brevets
DC Randonneurs Bicycle Club
Davis Bike Club
Florida Training & Brevets
Houston Randonneurs
Lone Star Randonneurs
New Jersey Brevet Series
North Carolina Bicycle Club Randonneurs
Oregon Randonneurs
Rocky Mountain Randonneurs
San Diego Brevet Series
San Francisco Randonneurs
Santa Cruz Randonneurs
Saratoga, NY Brevets

Canada:
Randonneurs British Columbia
Randonneurs Ontario
Club Velo Randonneurs de Montreal
Alberta Randonneurs

Japan:
Brevet-Japon (in Japanese)

France:
Audax Club Parisien -Official Site
Les Randonneurs Mondiaux

British Isles:
Audax UK

Pat Rodden
Narayan Krishnamoorthy
Gregg Bleakney
Jim Carson
Martin Criminale
Kevin Humphreys
Peter McKay
Jon Muellner
Kent Peterson (Great Divide Race)
Amy & Robin Pieper
Jim Trout RAAM 2005
Paul Whitney

Local Cycling Clubs

Remond Cycling Club

Canadian Kilometer Achiever Program
RAPSody - NW fundraising ride for the Bicycle Alliance of WA
BC Randonneur Links
Roadbikerider.com
Pamela Blalock & John Bayley
Bicycle Quarterly

Ultra Cycling

Ultra Marathon Cycling Ass'n (UMCA)
UMCA Year-Rounder Century Challenge
Planet Ultra
Furnace Creek 508