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.
Every link above goes to the race, its timing provider, or an official registration partner. Last checked July 23, 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.
2026 Delaware River Loop Series 100K registration
Registration for the 2026 Delaware River Loop Series 100K runs through the official registration page at runsignup.com.
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
| Year | Date | Status | Results |
|---|---|---|---|
| 2026 | Saturday, October 17, 2026 | Upcoming | — |
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.
How do I register for the Delaware River Loop Series 100K?
Register for the Delaware River Loop Series 100K through the official registration link: marathonscout.com/go/delaware-river-loop-series-100k/register. It opens the race registration page at runsignup.com.
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