The National Historic Landmark Jerome Park Reservoir, the tree-lined Moshulu Parkway, and the amazing assembly of Art Deco along the Grand Concourse all add to the allure of this popular half-marathon in the Bronx. The second race of the NYRR Half-Marathon Grand Prix is the only race in the series on the mainland USA. Traditionally held in July, this race moves to February to avoid midsummer heat and humidity.