Organizers
- The Art Scene @ CNY Arts Center Inc - Ticketing
- The Art Studio NY
- The Artery Studio
- The Artful Mind
- The Arthritis Foundation, Inc. - Virginia
- The Artists Gallery at the Virginia Beach Art Center
- The Arts Center
- The Arts Effect NYC
- The Arts Hub
- The Assembly
- The Athenian School
- The Athletic Headquarters
- The Atlanta Area Young Professionals Network
- The B.I.G. Ride
- The Back Nine Club
- The Badge of Honor Benefit Run, Inc.
- The Baldwin School
- The Bar LLC
- The Basement Doctor
- The Battle of Franklin Trust
- The Battlefield MudRun
- The Beautiful Game Soccer Academy
- The Beverly Castle Preschool
- The Bible Speaks Academy
- The Big Get Together
- The Biggest Loser RunWalk
- The Bike Depot
- The Bilingual Schoolhouse
- The Birthday Run
- The Bit Theater
- The Black Box Improv Theater
- The Blarney Stone
- The Blood and Guts Run
- The Boaz Project
- The Bolles School
- The BOMC
- The Book Bridge
- The Boston Conservatory
- The Boys & Girls Club of Springfield-SERTOMA UNIT
- The Brain Aneurysm Foundation
- The Brandon Bay half marathon & 10k
- The Breast Cancer Research Foundation
- The Brianna Marie Foundation Inc.
- The Brick House
- The Bridge Adaptive Sports and Recreation
- The Bridge Golf Learning Center
- The Broadway Clubhouse LLC
- The Broadway Star Project
- The Bromfield School, Class of 2012
- The Bub Run
