Half-Marathon races in Delaware, United States — 2026 running calendar

Sep

06

Bear Trail Half Marathon & 10K

Bear, Delaware, United States

Running

Half-Marathon 10.5K

Oct

24

6TH SEAWITCH 1/2 MARATHON CLASSIC (SEAWITCH RACING FESTIVAL WEEKEND)

Lewes, Delaware, United States

$70.00 - $90.00

Running

Half-Marathon 26.1K

Dec

05

Rehoboth Seashore Marathon and Half Marathon

Rehoboth Beach, Delaware, United States

$75.00 - $175.00

Running

Marathon Half-Marathon

Mar

20

First State Half Marathon & 10K

Newark, Delaware, United States

$59.00 - $89.00

Running

Half-Marathon 10K

Apr

10

Coastal Delaware Running Festival

Rehoboth Beach, Delaware, United States

$45.00 - $175.00

Running

5K 9K Half-Marathon Marathon +3

Apr

18

Delaware Running Festival

Wilmington, Delaware, United States

$40.00 - $120.00

Running

Marathon Half-Marathon 10K 5K +12

May

08

Race4Warriors 5K, 10K & Half Marathon Challenges!

Lewes, Delaware, United States

$30.00 - $65.00

Running Walking Trail running

5K 10K Half-Marathon +5

May

22

Conquer The Canal

Delaware City, Delaware, United States

$35.00 - $125.00

Running

Marathon Half-Marathon 10K 5K

May

02

17th Seashore Classic 1/2 Marathon, 2-person Relay & 5k Run/Walk

Lewes, Delaware, United States

Running

5K Half-Marathon

May

01

RACE4WARRIORS VIRTUAL 5k, 10K or Half Marathon

Lewes, Delaware, United States

Running

5K 8K 10K Half-Marathon +5

Mar

28

Race Through Delaware 1M, 5K, 10K, 13.1, 26.2 – Now Only $20!

Dover, Delaware, United States

$20.00

Running

1.6K 5K 10K Half-Marathon +1