Black Diamond Express Half Marathon & 5K 2026

Support the Mendon Foundation, the Lehigh Valley Trail's land trust and maintainer. Run the flat, out & back course along the historic Lehigh Valley Trail, including newly resurfaced sections. A virtual option is available to complete your race within a week. Finishers receive collectible ceramic medals for the Half Marathon or lapel pins for the 5K. Register early for a long-sleeved shirt or mug. Enjoy the trail and give back.