Boulogne-sur-Mer, Hauts-de-France, France
23.9 miles (38.4 km) · 1,648 ft elevation gain · Loop · trail · Route
Ceinture de Boulogne is a 23.9-mile loop route in Boulogne-sur-Mer, Hauts-de-France, France, gaining 1,648 feet of elevation. The route follows a up-and-over elevation profile. The terrain breaks into 7 distinct sections including 2 significant climbs. The longest climb covers 2.6 miles gaining 327 feet at an average 2.5% grade. Approximately 91% of the route is runnable at a steady effort. The route opens with mixed terrain and finishes with a gradual climb.
| Distance | 23.9 mi (38.4 km) |
| Elevation gain | 1,648 ft (502 m) |
| Average gain | 69 ft per mile (13 m per km) |
| Longest climb | 6.9 mi, 333 ft of gain |
| Steepest climb grade | 12.9% |
| Runnable | 91% of the route |
| Climbs / descents | 2 climbs, 1 descents |
| Profile shape | Up, then down |
| Difficulty score | 3.1 of 100 |
| Surface | trail |
| Route shape | Loop |
| Type | Route |
| Grade band | Share of route |
|---|---|
| Flat | 66% |
| Mild uphill | 11% |
| Moderate uphill | 5% |
| Steep uphill | 1% |
| Mild downhill | 10% |
| Moderate downhill | 4% |
| Steep downhill | 2% |
Ceinture de Boulogne has 1,648 ft (502 m) of elevation gain over 23.9 miles (38.4 km). That averages 69 ft of gain per mile.
The difficulty score for Ceinture de Boulogne is 3.1 of 100. That is harder than 30.3% of routes at a similar distance. About 91% of the route is runnable at typical trail effort; the rest is steep enough that most runners hike.
The longest climb on Ceinture de Boulogne runs 6.9 miles (11.1 km) and gains 333 ft (102 m). The steepest climb grade on the route is 12.9%.
Preview this trail in 3D flyover, view the elevation profile, and explore the segment breakdown.
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