Connecticut Half Marathon Calendar
Browse all Connecticut Half Marathons in 2025 and 2026 by month and by city below. For each race, you’ll find the history of the half marathon and the course, the most recent year’s course maps, elevation profiles, runner reviews, pricing, and how to sign up.
We dedicate hours every month searching for races to include in the Connecticut Half Marathons calendar. If you happen to see any half marathon not included, contact us at [email protected] to submit your race.
Filter Connecticut Half Marathons
Race Size
Difficulty
Scenery
Type
Perfect For
Distances
Filter Connecticut Half Marathons
Race Size
Difficulty
Scenery
Type
Perfect For
Distances
Featured Race
June 7, 2025
1,000-10,000 runners
Portland, Connecticut
- 5k, Half Marathon, Road
May 14, 2025
1-100 runners
Hartford, Connecticut
- Half Marathon, Marathon, Road
May 18, 2025
500-1000 runners
Mystic, Connecticut
- 10K, Half Marathon, Road
May 24, 2025
100-500 runners
Hamden, Connecticut
- 5k, Half Marathon, Road
June 1, 2025
1,000-10,000 runners
Fairfield, Connecticut
- 5k, Half Marathon, Road
June 7, 2025
1,000-10,000 runners
Portland, Connecticut
- 5k, Half Marathon, Road
June 7, 2025
500-1000 runners
Simsbury, Connecticut
- 10K, 5k, Half Marathon, Road
June 9, 2025
1-100 runners
Simsbury, Connecticut
- Half Marathon, Marathon, Trail
June 14, 2025
1-100 runners
Hamden, Connecticut
- Half Marathon, Road
August 2, 2025
500-1000 runners
New London, Connecticut
- Half Marathon, Road
September 1, 2025
500-1000 runners
New Haven, Connecticut
- 5k, Half Marathon, Road
September 7, 2025
500-1000 runners
Hartford, Connecticut
- 5k, Half Marathon, Road
September 13, 2025
500-1000 runners
Milford, Connecticut
- Half Marathon, Road
September 13, 2025
1-100 runners
Stratford, Connecticut
- Half Marathon, Trail
September 21, 2025
1-100 runners
Warren, Connecticut
- 5k, Half Marathon, Trail, Ultramarathon
October 5, 2025
500-1000 runners
Norwalk, Connecticut
- 5k, Half Marathon, Road
October 5, 2025
1-100 runners
Hampton, Connecticut
- 5k, Half Marathon, Road
October 11, 2025
1,000-10,000 runners
Hartford, Connecticut
- 5k, Half Marathon, Marathon, Road
October 12, 2025
1-100 runners
Cornwall, Connecticut
- 10K, 5k, Half Marathon, Marathon, Trail
October 18, 2025
1-100 runners
Northeast, Connecticut
- Half Marathon, Marathon, Trail
October 19, 2025
100-500 runners
Ridgefield, Connecticut
- Half Marathon, Road
Running in Connecticut
FAQ
What are the most popular Connecticut half marathons?
The Mystic Half Marathon, the UConn Health Half Marathon and the Hartford Half Marathon are the three most popular half marathons in Connecticut.
What’s the best half marathons in Connecticut for beginners in 2025?
Our favorite half marathons in Connecticut are the Mystic Half Marathon for it’s scenic New England coastal course and large running field. We also love the Fairfield Road Races Half Marathon for beginners because of it’s easy and scenic course along Jennings Beach.
Which Connecticut cities have half marathons?
