6th Seawitch 1/2 Marathon Classic (Seawitch Racing Festival Weekend)
Lewes, DE
Half Marathon5K
Open until Oct 24from $80
Half Marathons in Delaware
As of October 22, 2026, Crewable lists 1 upcoming half marathon in Delaware in October 2026. It is 6th Seawitch 1/2 Marathon Classic (Seawitch Racing Festival Weekend) on October 24 in Lewes. Registration is open.
Sources: UltraSignup, RunSignUp, UTMB, race organizers and race websites
Race calendar
October 2026
1 raceQuick answers
What is the next half marathon in Delaware?
6th Seawitch 1/2 Marathon Classic (Seawitch Racing Festival Weekend), on Saturday, October 24, 2026, in Lewes. Distances: Half Marathon, 5K.
How many half marathons in Delaware have open registration?
It lists registration as open as of October 22, 2026.
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