Organizers
- Bluedog Cycles
- Bluefield Area Little League
- Bluegrass Girls Fastpitch Tournament
- Bluegrass Tennis Association
- Bluegrass Xpress Baseball
- Bluegrass Youth Retreat
- Bluepoint Race Management and Timing
- Blueprint Camp, LLC
- Bluestone Camp and Retreat
- Bluewater Bay Tennis Center
- Bluewater Fitness
- BlueWave Fitness
- Bluff Lake Nature Center
- Bluffton Parks Department
- Bluffton Run for Hope
- Bluffview Montessori School PTA
- Blythe-Bower Elementary
- BMANA ATLANTA 2016
- BN Sports, LLC
- B'nai B'rith Health Run
- Board Up Productions
- Boast Sports
- Bob Ackerman Golf Academy
- Bob Bertucci Volleyball Camps
- Bob Collins Golf
- Bob Duncan, PGA - G P S Player's Academy
- Bob Edwards
- Bob May Golf
- Bob Stoops Football Camp
- Bobcat Bolt
- BOCA HAWAII
- Boca Raton Bicycle Club
- Boca Raton Road Runners
- Bocage Racquet Club Inc
- Bodies By Badger
- Bodies by Brad and Jen LLC
- Body First Tennis and Fitness Center
- Body Tech Fitness
- Bodyfitkc LLC
- Boerboel Brew LLC
- Boerne Family YMCA
- Boerne Youth Athletic Association
- Bohemian Alps Run
- Boiling Springs Triathlon
- Boise Parks & Rec
- Boise Racquet & Swim Club
- Boise State University
- Bold Racing
- Bold Summers
- Bolder Inspiration of Trenton Falls
