5K
Races in May 2026
3071 upcoming races in may 2026
Father's Day Race to End Polio 5K RunFather's Day Race to End Polio 5K WalkFather's Day Race to End Polio Virtual
Half Marathon30K
High School Sprint Triathlon15K (9.3 miles) Open Run10K (6.2 miles) Open Run5K (3.1 miles) Open Run5K Open Swim3K Open Swim1500m Open Water Swim1/3 Iron Aquathlon1/3 Iron Aquabike1/3 Iron Duathlon1/3 Iron TriathlonOlympic AquathlonOlympic AquabikeOlympic DuathlonOlympic TriathlonSprint AquathlonSprint AquabikeSprint DuathlonSprint TriathlonDuathlon - BeginnerTriathlon - Beginner
AquaBike (individual)TRIATHLON - Middle & High School (indvidual)TRIATHLON - Relay AdultTRIATHLON FAMILY Relay (Adult & High School)TRIATHLON Relay High School TriathlonTRIATHLON YOUTH/JUNIORVIRTUAL TRIATHLONENDURO TRIATHLON (individual)TRIATHLON (individual)
Olympic Triathlon - 2 Person RelaySprint - IndividualSprint Triathlon - 3 Person RelayOlympic - IndividualSprint Triathlon - 2 Person RelayOlympic Triathlon - 3 Person RelayVirtual - Individual - Any Distance
5K10KHalf Marathon
1 Mile5k10kHalf MarathonVirtual RunKid's DashVolunteer and Run
Mimosa 5K
2K Fun Walk5K Youth Race (19 and Under)5K Race10-MIle Race
5K Run/Walk10K Run/WalkHalf Marathon
1.2 Mile Swim2.4 Mile Swim1/2 Mile SwimSwim + Run
5K Walk (Untimed)5K Virtual5K Run10K Run10K VirtualWildlife Warrior (5K + 10K)Wildlife Warrior (5K + 10K) VirtualKids' Course
Paper Chase 5k Run/Walk
1 Mile5K
5K Run/Walk
5KSprint Triathlon RelayVirtual Multi-SportSuper Sprint DuathlonSuper Sprint TriathlonOlympic Paddle Tri RelayOlympic Paddle TriathlonOlympic Aquabike RelayOlympic AquabikeOlympic Duathlon RelayOlympic DuathlonOlympic Triathlon RelayOlympic TriathlonSprint Paddle Tri RelaySprint Paddle TriathlonSprint TriathlonSprint DuathlonSprint Duathlon RelaySprint AquabikeSprint Aquabike Relay
1 mile Run/Walk5K10k1/2 Marathon1/2 Mile Kid's Dash
Entire Series
Brookline Bolt 5k