5K races in Connecticut, United States — 2026 running calendar

Summer Cross Country Series

New Canaan, Connecticut, United States

Jun 2, 2026 (Tue) – Sep 1, 2026

Free

Running

4.3K 4.6K 4.4K 4.8K +10

Glastonbury Education Foundation 5K Run/Walk (GEF5K)

Glastonbury, Connecticut, United States

May 31, 2026 (Sun)

Running

5K

Run the Vineyards - Jonathan Edwards 5K

North Stonington, Connecticut, United States

May 31, 2026 (Sun)

Running

5K

17th Annual Barkhamsted River Run 5K

Barkhamsted, Connecticut, United States

May 31, 2026 (Sun)

Running

1.6K 5K

The River Run 5K and Kids Fun Run

Old Saybrook, Connecticut, United States

May 30, 2026 (Sat)

Running

5K 1.6K

Spring Street Mile & 5K Presented by PTSMC

Manchester, Connecticut, United States

May 30, 2026 (Sat)

Running

1.6K 5K

Woodstock Memorial Day 5K & 10K

Woodstock, Connecticut, United States

May 25, 2026 (Mon)

Running

10K 5K

Oh Boy 5K

Waterbury, Connecticut, United States

May 25, 2026 (Mon)

Running

5K

Jim Fixx Memorial Day Run

Greenwich, Connecticut, United States

May 25, 2026 (Mon)

Running

5K 0.8K

America's 250 Celebration Color Run 5K

Ledyard, Connecticut, United States

May 24, 2026 (Sun)

Running

5K

Marlborough Lions Club Round The Lake 5K

Marlborough, Connecticut, United States

May 24, 2026 (Sun)

Running

5K

32nd Annual | Weston Memorial Day Weekend 5K & Kids Fun Run

Weston, Connecticut, United States

May 23, 2026 (Sat)

Running

5K 1.6K