Organizers
- The Runner's Fairway Series
- The Runners Hub
- The Running Bee Foundation
- The Running Dead
- The Running School
- The Running Shop
- The S.C.O.R.E 4 Life Foundation
- The S.F. Experience
- The Salvation Army
- The Salvation Army Children's Services
- The Salvation Army Kroc Center
- The Salvation Army of Broward County
- The Salvation Army Ray and Joan Kroc Corps Community Center
- The Salvation Army, St. Petersburg Area Command
- The San Francisco Yacht Club
- The Sanctuary Golf Course
- The Sandbox Sunset Sports
- The Sarasota Y
- The Savannah Golf Club
- The School of Practical Philosophy
- The Scott Law Foundation
- The Scottish Mountain Bike Consortium
- The Second City Training Center
- The Second City Training Centre Toronto
- The Semper Fi 5K
- The ShamRock 'n Roll Road Race
- The Shawnee Inn and Golf Resort
- The Shelton Companies
- The Shop Rat Foundation
- The Siege Race
- The Sky Family YMCA
- The Sound Golf Links at Albemarle Plantation
- The South Orange-Maplewood Adult School Children's Summer Program
- The South Shore Health and Racquet Club
- The Spanish Classroom
- The Spark Run
- The SPCA for Monterey County
- The Sports Forum
- The Spot Sport
- The St. Thomas More Center
- The Stables at Frederica
- The Stafford Golf Academy
- The Stampede
- The Starz Program
- The STEAM Club
- The Stephens County Foundation
- The Strength Of A Rose Foundation
- The Strings Club
- The Stu Nevermann Memorial Run
- The Success Foundation Serving Greeley-Evans Schools
