Endurance Race Calendar May

Blue Moon 5K. 10K. Half Marathon by Califlow Runs

Long Beach, California, United States

May 31, 2026 (Sun)

Running

5K 10K Half-Marathon

CLIMB FOR A CAUSE - HOSTED BY ALLIANCE FOR GREATER GOOD

York, Maine, United States

May 31, 2026 (Sun)

Trail running

2.4K

2026 14th Annual Penn Alexander School Run for Art & Science 5K & 1-Mile Fun Run/Walk

Philadelphia, Pennsylvania, United States

May 31, 2026 (Sun)

Running

5K 1.6K

The Bill Scott Memorial 5K Walk/Run

Liverpool, New York, United States

May 31, 2026 (Sun)

Running

5K

Fort Lee Historic Park 5K

Fort Lee, New Jersey, United States

May 31, 2026 (Sun)

Running, Walking

5K 1.6K

The Compassion 5K: Presented by Griswold Home Care

Wilmington, Delaware, United States

May 31, 2026 (Sun)

Running

5K

FXBG Trail 5 Miler

Fredericksburg, Virginia, United States

May 31, 2026 (Sun)

Trail running

8K

Glastonbury Education Foundation 5K Run/Walk (GEF5K)

Glastonbury, Connecticut, United States

May 31, 2026 (Sun)

Running

5K

LandShark Swim & Swim+Run

Amesbury, Massachusetts, United States

May 31, 2026 (Sun)

Swimming

3.2K 1.9K 3.9K

The Joe Keany Memorial 5K and 1 Mile Fun Run

Miller Place, New York, United States

May 31, 2026 (Sun)

Running

5K 1.6K

OUTRUN ADDICTION 5K - PELHAM

Pelham, New Hampshire, United States

May 31, 2026 (Sun)

Running, Walking

5K 3.2K

Unity Beach Swim - Aquathlon & Run Training Races (May)

Saint Petersburg, Florida, United States

May 31, 2026 (Sun)

Trail running, Running, Swimming

5K 2.5K 1K 10K +7