2026 Delaware & Lehigh Heritage Half Marathon Walk and Run

The Delaware & Lehigh Heritage Half Marathon Walk and Run takes its name seriously. Run on the D&L Trail in Slatington, Pennsylvania, the course follows a path steeped in the region's industrial past, now a greenway through the Lehigh Valley. The race is part of the St. Luke's D&L RaceFest, a day that draws runners from about 16 states and has grown to roughly 830 finishers in recent years.

The course itself is a point-to-point route along the trail, offering a mix of paved and unpaved surfaces. It's a rolling profile, with gentle grades that keep the legs honest but don't overwhelm. The trail setting provides a constant connection to the landscape, with the Lehigh River often in view. The race has a loyal following: about 15% of runners return in later years, a testament to its appeal.

With a typical winning time around 69 minutes, the front end is competitive, but the event welcomes walkers and runners alike. The finish brings a sense of accomplishment, and the post-race atmosphere is friendly and community-focused. It's a race that honors its heritage and offers a genuine taste of Pennsylvania's outdoor character.