Organizers
- Rockbrook Pool Association
- Rockdale Magnet School for Science and Technology
- Rockdale School
- Rockers & Rattlers Fastpitch Softball
- Rockers Softball
- Rockers/Rattlers
- Rocket Race
- Rocket Runner's 5k
- Rocketrace
- ROCKETSHIP SPORTS
- Rockford Mean Machine
- Rockford Wildcats
- Rockhaven Camp and Retreat Center
- Rockin Runners
- Rockingham County Tennis Association (RCTA)
- Rockland Community Sailing
- Rockland Lake Golf Course
- Rocklin Golf Academy
- Rock'n the Farm
- RockSolidRace
- Rocktown Racing
- Rockwell Events
- Rockwood Golf Course
- Rocky Hill Triathlon
- Rocky Hollow Recreation Center
- Rocky Mountain Adventure Camp-Colorado State University Military Youth
- Rocky Mountain Bird Observatory
- Rocky Mountain Christian Camp
- Rocky Mountain Diving Club
- Rocky Mountain Hockey Schools
- Rocky Mountain Road Runners
- Rocky Mountain Soccer Camps, Inc.
- Rocky Mountain Triathlon Company
- Rocky Point Golf Course
- Rocky River Golf Club
- Rocky River Road Club
- Rocky Rush Cheerleading Club
- Rocky Trail Entertainment
- ROCLEMA
- Rod Ray Tennis Camp
- Rodelle Vanilla Day
- Roden Barnyard Adventures, LLC
- Rodeo Run 5K & 1-mile
- Rodeo Run 5K/10K
- Rodney Street Tennis RSTTA
- Rod's Golf Improvement Center Inc.
- Roger Scott Tennis Center and Tennis-4-Everyone
- roger1
- Rogers Activity Center
- Rogers Community School Recreation Association
