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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

Filter Delaware Half Marathons

September 28, 2025
100-500 runners
Bear, Delaware
October 25, 2025
100-500 runners
Lewes, Delaware
December 6, 2025
1,000-10,000 runners
Rehoboth, Delaware
Key West
January 18, 2026
1,000-10,000 runners
Key West, Delaware
April 19, 2026
500-1000 runners
Wilmington, Delaware
May 9, 2026
1-100 runners
Lewes, Delaware

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 months can I run a half marathon in Delaware?

You can run a half marathon in Delaware in January, May, June, September, October, and December.

Which Delaware cities have half marathons?
You can run Delaware half-marathon events in Bear, Key West, Lewes, and Rehoboth.

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