Sentier des 25 bosses

Réserve de biosphère de Fontainebleau et du Gâtinais, Île-de-France, France

8.6 miles (13.8 km) · 1,591 ft elevation gain · Loop · trail · Route

Route facts

Distance	8.6 mi (13.8 km)
Elevation gain	1,591 ft (485 m)
Average gain	186 ft per mile (35 m per km)
Longest climb	2.7 mi, 136 ft of gain
Steepest climb grade	24.2%
Runnable	63% of the route
Climbs / descents	0 climbs, 0 descents
Profile shape	Down, then up
Difficulty score	7 of 100
Surface	trail
Route shape	Loop
Type	Route

Grade breakdown

Grade band	Share of route
Flat	37%
Mild uphill	10%
Moderate uphill	9%
Steep uphill	13%
Mild downhill	7%
Moderate downhill	9%
Steep downhill	15%

Questions about Sentier des 25 bosses

How much elevation gain does Sentier des 25 bosses have?

Sentier des 25 bosses has 1,591 ft (485 m) of elevation gain over 8.6 miles (13.8 km). That averages 186 ft of gain per mile.

How difficult is Sentier des 25 bosses?

The difficulty score for Sentier des 25 bosses is 7 of 100. That is harder than 61.5% of routes at a similar distance. About 63% of the route is runnable at typical trail effort; the rest is steep enough that most runners hike.

What is the longest climb on Sentier des 25 bosses?

The longest climb on Sentier des 25 bosses runs 2.7 miles (4.3 km) and gains 136 ft (42 m). The steepest climb grade on the route is 24.2%.