Organizers
- College of Business- Garrett A. Morgan Summer Business Institute
- College of DuPage
- College of Marin Sports Camps
- College of Staten Island
- College Options Foundation
- College Park Athletic Club
- College Scouting Bureau
- College Soccer Academy
- College Soccer ID Academy
- Collegebound 4 Kids
- CollegeSwimming Enterprises
- Collegiate Soccer Academy
- Colleton County Rice Festival
- Colleton River Golf Academy
- Colleyville Parks and Recreation Department
- COLLIER COUNTY
- Collindale Golf Academy
- Collingswood Youth Football
- Collingwood School
- Collins Hill Golf Club
- Collins Maxwell Baxter Soccer Club
- Collinsville Police Department Special Olympics
- Colombia Tri Events LLC
- Colombianitos
- Colon Cancer Alliance
- Colon Cancer Coalition
- Colonia 5K Classic/ Chris Jantas Fun Run
- Colonia Girls Softball League & Central Jersey Cyclones
- Colonial Acres Golf Club
- Colonial Heights Park and Recreation
- Colonial Road Runners
- Colonial Sports Group
- Colonial Terrace Golf Course
- Color & Glow 5k
- Color 5 Run
- Color Blaze 5K
- Color BUZZ
- Color BUZZ Night
- Color Dash Extreme
- Color Fun Fest 5K
- Color Hype
- Color Me Cured
- Color Me Empowered
- Color Me Loco
- Color My College
- Color My Future
- Color Rama
- Color Us Fabulous
- Color Vibe
- Color Vibe Italia
