Half Marathons in Delaware

7 upcoming Half Marathon races in Delaware for 2026 and beyond — with dates, locations, and registration links.

6TH SEAWITCH 1/2 MARATHON CLASSIC (SEAWITCH RACING FESTIVAL WEEKEND)
Sat, Oct 24, 2026 · Lewes, DE
Half Marathon26.1K
Rehoboth Seashore Marathon and Half Marathon
Sat, Dec 5, 2026 · Rehoboth Beach, DE
MarathonHalf Marathon
First State Half Marathon & 10K
Sat, Mar 20, 2027 · Newark, DE
Half Marathon10K
Coastal Delaware Running Festival
Sat, Apr 10, 2027 · Rehoboth Beach, DE
MarathonHalf Marathon9K5K9.0K
Delaware Running Festival
Sun, Apr 18, 2027 · Wilmington, DE
MarathonHalf Marathon10K5K
Race4Warriors 5K, 10K & Half Marathon Challenges!
Sat, May 8, 2027 · Lewes, DE
5K10KHalf Marathon
Conquer The Canal
Sat, May 22, 2027 · Delaware City, DE
MarathonHalf Marathon10K5K