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

99.1 PLR *Shamrock and Roll 5K*

New Haven, Connecticut, United States

07 Mar, 2027 (Sun)

$30.00

Running

5K

Catch A Leprechaun 5K

Essex, Connecticut, United States

13 Mar, 2027 (Sat)

$33.00

Running

5K

Stamford Run Club 5k/10k/Half Marathon 2026

Stamford, Connecticut, United States

18 Apr, 2027 (Sun)

Running

5K

Worthington Early Summer 5k Running Series

Somers, Connecticut, United States

03 Jun, 2026 (Wed) – 01 Jul, 2026

Free

Running

5K +1

Summer Cross Country Series

New Canaan, Connecticut, United States

02 Jun, 2026 (Tue) – 01 Sep, 2026

Free

Running

4.3K 4.6K 4.4K 4.8K +10

Run the Vineyards - Jonathan Edwards 5K

North Stonington, Connecticut, United States

31 May, 2026 (Sun)

Running

5K

17th Annual Barkhamsted River Run 5K

Barkhamsted, Connecticut, United States

31 May, 2026 (Sun)

Running

1.6K 5K

Glastonbury Education Foundation 5K Run/Walk (GEF5K)

Glastonbury, Connecticut, United States

31 May, 2026 (Sun)

Running

5K

The River Run 5K and Kids Fun Run

Old Saybrook, Connecticut, United States

30 May, 2026 (Sat)

Running

5K 1.6K

Spring Street Mile & 5K Presented by PTSMC

Manchester, Connecticut, United States

30 May, 2026 (Sat)

Running

1.6K 5K

Woodstock Memorial Day 5K & 10K

Woodstock, Connecticut, United States

25 May, 2026 (Mon)

Running

10K 5K

Jim Fixx Memorial Day Run

Greenwich, Connecticut, United States

25 May, 2026 (Mon)

Running

5K 0.8K