Ultramarathon

Delaware River Loop Series 100K

Repeated canal-side circuits build this 100K in Titusville, creating a crew-friendly Delaware River ultra with simple logistics and steady pacing.

Next raceSaturday, October 17, 2026
Distance categoryUltramarathon
LocationTitusville, New Jersey
Get alertsLast checked August 4, 2026

Quick facts

  • One-hundred-kilometer loop race.
  • Canal-side course beside the Delaware River.
  • Frequent return to a central support area.
  • Low navigation complexity compared with remote trail ultras.

About the Delaware River Loop Series 100K

The Delaware River Loop Series turns a compact canal corridor into a long-distance test. Runners see the same support area repeatedly, which lowers navigation stress and shifts attention toward pacing and fueling.

Course

The 100K is assembled from repeated loops beside the Delaware River and canal near Titusville. The terrain is comparatively gentle for an ultra, but repetition and late-race mental fatigue are central parts of the challenge.

Race-day weather

Mid-October can bring cool, efficient running weather, but rain, wind along the water and damp footing are realistic. Layering is easier because the course returns to support often.

Past Delaware River Loop Series 100K dates and results

YearDateStatusResults
2026Saturday, October 17, 2026Upcoming

Delaware River Loop Series 100K FAQ

When is the Delaware River Loop Series 100K?

The 2026 Delaware River Loop Series 100K is on Saturday, October 17, 2026.

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