Orange County, California, United States
20.1 miles (32.4 km) · 3,138 ft elevation gain · Loop · trail · Route
Horsetrough Spring via Black Star Canyon Road (CA) is a 20.1-mile loop route in Orange County, California, United States, gaining 3,205 feet of elevation. The route follows a up-and-over elevation profile. The terrain breaks into 3 distinct sections including 1 significant climb. The longest climb covers 10.0 miles gaining 2,939 feet at an average 5.0% grade. Approximately 70% of the route is runnable at a steady effort. The route opens with a climb and finishes with flat terrain.
| Distance | 20.1 mi (32.4 km) |
| Elevation gain | 3,138 ft (957 m) |
| Average gain | 156 ft per mile (30 m per km) |
| Longest climb | 9.4 mi, 2,689 ft of gain |
| Steepest climb grade | 19.8% |
| Runnable | 71% of the route |
| Climbs / descents | 1 climbs, 1 descents |
| Profile shape | Up, then down |
| Difficulty score | 9.5 of 100 |
| Surface | trail |
| Route shape | Loop |
| Type | Route |
| Grade band | Share of route |
|---|---|
| Flat | 13% |
| Mild uphill | 21% |
| Moderate uphill | 12% |
| Steep uphill | 9% |
| Mild downhill | 23% |
| Moderate downhill | 13% |
| Steep downhill | 7% |
Horsetrough Spring via Black Star Canyon Road (CA) has 3,138 ft (957 m) of elevation gain over 20.1 miles (32.4 km). That averages 156 ft of gain per mile.
The difficulty score for Horsetrough Spring via Black Star Canyon Road (CA) is 9.5 of 100. That is harder than 67.6% of routes at a similar distance. About 71% of the route is runnable at typical trail effort; the rest is steep enough that most runners hike.
The longest climb on Horsetrough Spring via Black Star Canyon Road (CA) runs 9.4 miles (15.2 km) and gains 2,689 ft (820 m). The steepest climb grade on the route is 19.8%.
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