Organizers
- Rogue Alpha Rush
- Rogue Valley Race Group
- Rogue Valley Swim & Tennis Club
- Roland Park K-8 Magnet PTSA
- Rolesville Athletic Club
- Roller Coaster Race
- Rolling Hills Club
- Rolling Hills Golf Club
- Rolling Meadows Park District
- Rolling Prairie Business and Community Association
- Rollingwood Athletic Club
- Roma Little League
- ROMAN CATHOLIC BASKETBALL
- Roman Runners
- Rome Dollars for Scholars
- Rome Girls Softball League
- Rome Tennis Management Group
- Rome-Floyd Parks and Recreation Authority
- Rome-Floyd Parks and Recreation Department
- Romeoville Revolution Starzz
- Romulus Athletic Center
- Ron Barron PTR Tennis Services
- Ron Rosner YMCA
- Roncalli Rebels Baseball Camps
- Roosevelt County Little League
- Roosevelt Elementary PTA
- Roosevelt Elementary School PTA
- Rooted, Inc.
- Rootstock Racing
- Rosamond CSD
- Rosarian Academy
- Rosaryville Spirit Life Center
- Roscommon Harriers
- Rose Academy of Ballet
- Rose Bowl Aquatics Center
- Rose Capital East Little League
- Rose City Cyclists
- Rose City Golf Course
- Rose City Hockey Club
- Rose City Parks and Rec. Committee
- Rose DiGangi Foundation
- Rose Hill Recreation Commission
- Rose Lake Youth Camp
- Rose Park Tennis Center
- Rose Tree Media School District
- Rosebud Fitness
- Rosedale Golf & Country Club
- Roselle Medinah Softball
- Roselle Medinah Softball and Baseball Organization
- Roselle Renegades
