Organizers
- Sullivan University Summer Camp
- Sully Freedom Fun Run
- Sulphur Parks and Recreation
- Sum It Up Lacrosse
- SumMAT Camp (by Charest Alpinism LLC dba Petra Cliffs)
- Summer 10k Park Series
- Summer 10km Series
- Summer at Blake
- Summer at Inly
- Summer at St. Bart's
- Summer at St. John's
- Summer at Stanley British Primary School
- Summer at Tower Hill
- Summer Beach Club
- Summer Camp Advisory Team: IDEAS Camps | Rancho Camps
- Summer Camp Advisory Team: StemQuest Camps | IDEAS Camps | Rancho Camps
- Summer Camp at The Co-op School
- SUMMER CAMP with Mt. Adams Institute
- Summer Cooking Camp
- Summer Cooking Camp 2015
- Summer Culinary
- Summer FC
- Summer Fit CAMP
- Summer Harmony Camp
- Summer in the Park
- Summer Institute at St. Joseph's College
- Summer of Surf
- Summer on the Prairie
- Summer Programs - BASIS Independent Silicon Valley
- Summer Programs at Carolina Day School
- Summer Programs at Cary Academy
- Summer Slam Softball
- Summer Social
- Summer Solstice Four Miler
- Summer Soul Surf Camp
- Summer Strings & Woodwind Camp
- Summer Stuff Day Camps
- Summer Theatre of New Canaan
- Summer Track Camps & Clubs
- Summer Track Clubs & Camps
- summerhill road race
- Summerlin North Little League
- Summers Farm
- SummerTech
- Summit Ascents International
- Summit Athletic Performance
- Summit Athletic Running Club
- Summit Bike Club
- Summit Church
- Summit Event Management, LLC
