June 2024 Half Marathons Usa. Half marathons listed are a combination of both trail half marathons 2024 and 2025, and road half marathons 2024 and half marathons 2025, of which are 13.1 miles (21k). These are the national park half marathons you can run in 2024.

The runner’s world 2024 half marathon and marathon calendar. From $ 115 registration open.