GAP factor 6.6% slower than flat · net elevation -6 m
Decision summary
Lower than 70% of comparable mapped races
10:00:00 total cut-off
Historical race-date favourability, not a forecast
Verified GPS route
Quick answers
RaceIndex has a GPS course file for Patapsco Valley 50K Ultramarathon, so runners can inspect the route line on the map. Elevation charts and ascent figures appear only when that file includes usable elevation data.
The Patapsco Valley 50K Ultramarathon route has 1,387 m of ascent, 1,394 m of descent and an estimated 6.6% grade-adjusted pace penalty versus a flat route.
The Patapsco Valley 50K Ultramarathon route starts at CCBC Catonsville, 800 S. Rolling Rd. Catonsville, MD 21228 and finishes at CCBC Catonsville, 800 S. Rolling Rd. Catonsville, MD 21228. Underfoot, expect trail. It passes Cascade Falls, Lost Lake, Patapsco River crossing and Mill Race trail. 50K is two loops of approximately 16.2 miles each (25K is a single loop), run clockwise in 2026.
5.
Its normalised GAP factor is 6.6% slower than a flat course, with about 1387 m of total ascent.