Urdaibaiko biosfera erreserba, Euskadi, España
7.5 miles (12.0 km) · 1,118 ft elevation gain · Loop · trail · Route
Gernika-Lumo Forua. Estuarioaren bihotzean barrena is a 7.5 mile loop route located in Urdaibaiko biosfera erreserba, Euskadi, España. The route climbs 1,118 feet and descends 1,132 feet. The largest climb extends 1.7 miles, gaining 724 feet. The course averages 154 feet of vertical gain per mile. 77% of the route can be run, with walking required on steeper grades. Surface conditions are primarily trail. Terrain difficulty is rated as very hilly. Difficulty is rated 7.8 out of 10, placing it in the 54.21th percentile. This route serves both trail runners training for ultras and hikers exploring Euskadi.
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