Organizers
- City Running Tours Minneapolis
- City Running Tours New York City
- City Running Tours Philadelphia
- City Running Tours Seattle
- City Running Tours Texas
- City Running Tours Washington DC
- City Sculpting
- City Wide Home Loans
- City-County Athletic Complex
- CityKinder LLC
- CityScape Adventures LLC
- CitySkouts
- citytri racing inc
- Civic Service Organization
- Civic Theatre of Greater Lafayette
- CJ Mobley Art
- CJ Paladins
- CJ Promotions
- CJM'S Events Limited
- CKF COMPETITIONS
- Clackamas Cougar Run Committee
- Clairton Unity Group
- Clare River Harriers Club
- Claremont All Star Basketball Camp
- Claremont Basketball Academy
- Claremont Elementary
- Clarendon Inc.
- Clarendon Lions Club
- Clark County Fire Fighters Assc
- Clark County Park District
- Clark Little League
- Clark Memorial YMCA
- Clark Power Skating
- clark sports center
- Clarksburg Central Little League
- Clarkston Rotary
- Clarksville Christian School
- Clarksville Running club
- Clarksville Running Club
- CLASP Charity
- Class Act
- Class Act Community Playhouse
- Class Act Musical Theatre
- Classic Race Services
- Classic Run Events
- Classic Soccer Academy
- Classic Tours
- Classic Tours Corporate
- Classic Tours Ltd
- Classroom Antics
