Marathons in Delaware, United States
5 upcoming races are listed in Delaware, including 4 marathons, 5 half marathons and 5 ultras. The next is 6TH Seawitch 1/2 Marathon Classic (Seawitch Racing Festival Weekend) on October 24, 2026.
April has the most races. Race pages link the official source where we have one. Confirm dates and prices with the organizer before you register.
5
Races listed
4
Marathons
April
Busiest month
25 May
Last updated
| Date | Race | City | Distances |
|---|---|---|---|
| 24 Oct 2026 24Oct 26 | 6TH Seawitch 1/2 Marathon Classic (Seawitch Racing Festival Weekend) | Lewes | 21.1K · 5K |
| 5 Dec 2026 05Dec 26 | Rehoboth Beach Running Co. Seashore | Delaware | Ultra · 42.2K · 21.1K |
| 10 Apr 2027 10Apr 27 | Coastal Delaware Running Festival | Rehoboth Beach | 42.2K · 21.1K · 9K |
| 18 Apr 2027 18Apr 27 | Delaware Marathon | Delaware | Ultra · 42.2K · 21.1K |
| 1 May 2027 01May 27 | Seashore Classic Half Marathon | Delaware | Ultra · 21.1K |
Around Delaware
This is the most detailed level of the directory. Widen the search to the surrounding region.
Common questions
When is the next race in Delaware?
6TH Seawitch 1/2 Marathon Classic (Seawitch Racing Festival Weekend) on October 24, 2026. The table above lists every upcoming race in date order.
Which months are busiest in Delaware?
April (2), May (1), October (1), counting every upcoming race listed in Delaware.
Which distances can I run in Delaware?
The listed races include 4 marathons, 5 half marathons, 5 ultras and 2 5Ks. Many events offer more than one distance on the same day.
How do I confirm a race’s details?
Open the race page and check its provenance ledger, which shows where each fact came from. Then confirm the date, price and entry rules with the organizer before you register or book travel.
Spotted something wrong on this page?
Dates and prices move · tell us and we check the organizer’s source