Delaware Marathon, Relay & Half Marathon

Delaware Marathon, Relay & Half Marathon takes place in Wilmington, Delaware, on April 18, 2027. Four distances share the morning: the marathon (26.2 miles), the half marathon (13.1 miles), a 10K and a 5K, plus a relay option that splits the full marathon among teammates.

This is a road event, so your training can stay on pavement and on the paces you plan to race. If a solo marathon feels like too much this spring, the relay lets you take one leg at close to threshold effort while your team covers the rest, and runners chasing a Boston time have both the full and the half to aim at. Plan roughly a 16-week build for the marathon, with a long run every week, and eight to twelve weeks for the shorter distances.