France · Île-de-France
Trail Les 40 Bosses
3 distances available
Forest endurance test: Montmorency climbs, repeated punchy bosses, and a 120K loop that rewards durable climbing without alpine altitude.
Race Distances
Main Event
Entry Fee
110 EUR
Price per KM
€0.92
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75 km
Entry Fee
80 EUR
Price per KM
€1.07
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45 km
Entry Fee
50 EUR
Price per KM
€1.11
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Last checked: May 14, 2026