Upcoming 100K races in and near Washington, D.C. Use filters to quickly find races by month or race type.
More races: USA running calendar
Date Race Distance Location hf:tax:monthandyear hf:tax:typerace 07/12/2025 Ironstone 100K Ultra 100K Hollidaysburg PA 07-july trail 09/13/2025 Boulder Field 100 100K, 18M, 50K Jim Thorpe PA 09-september trail 09/06/2025 Pine Creek Challenge 100K, 100M, 26.2M, 50M Wellsboro PA 09-september trail 04/26/2025 Wawayanda Trail Fest 100K, 13.1M, 50K, 50M Hewitt NJ 04-april trail 11/09/2025 Raven Rocks 10K Run and Raven 100K Challenge 100K, 10K Cross River NY 11-november trail