Delaware Half Marathon Calendar
Browse all Delaware 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 Delaware Half Marathons calendar. If you happen to see any half marathon not included, contact us at [email protected] to submit your race.
Filter Delaware Half Marathons
Race Size
Difficulty
Scenery
Type
Perfect For
Distances
Filter Delaware Half Marathons
Race Size
Difficulty
Scenery
Type
Perfect For
Distances
Featured Race
January 18, 2026
1,000-10,000 runners
Key West, Delaware
- 5k, Half Marathon, Road
September 28, 2025
100-500 runners
Bear, Delaware
- 10K, Half Marathon, Trail
October 25, 2025
100-500 runners
Lewes, Delaware
- Half Marathon, Trail
December 6, 2025
1,000-10,000 runners
Rehoboth, Delaware
- Half Marathon, Marathon, Road
January 18, 2026
1,000-10,000 runners
Key West, Delaware
- 5k, Half Marathon, Road
April 19, 2026
500-1000 runners
Wilmington, Delaware
- Half Marathon, Marathon, Trail
May 9, 2026
1-100 runners
Lewes, Delaware
- 5k, Half Marathon, Marathon, Trail
Running in Delaware
FAQ
What are the most popular Delaware half marathons?
The most popular Delaware half marathon is the Rehoboth Beach Seashore Half Marathon with over 2,000 runners. The second most popular Delaware half marathon is the Coastal Delaware Running Festival in Dewey Beach with over 1,200 finishers.
What’s the best Delaware half marathons for beginners in 2025?
If you’re a beginner looking for a half marathon in Delaware, our favorites to recommend are the Rehoboth Beach Seashore Half Marathon in Rehoboth, a scenic coastal race with great crowds, and the Delaware Half Marathon Running Festival in Wilmington, the state’s oldest road marathon.
Which Delaware cities have half marathons?
