4
hikers
Carlos III Bridge – Source of the Ebro River loop from Reinosa
05:07
18.2km
350m
Hiking
Hard hike. Very good fitness required. Easily-accessible paths. Suitable for all skill levels. The starting point of the route is right next to a parking lot.
Last updated: August 27, 2026
Waypoints
Start point
Parking
167 m
Carlos III Bridge
Highlight • Bridge
250 m
Parish Church of San Sebastián
Highlight • Religious Site
Translated by Google •
Tip by
402 m
Ebro River
Highlight • River
5.32 km
IglesiaDeFresno
Highlight • Religious Site
Translated by Google •
Tip by
11.6 km
Source of the Ebro River
Highlight • River
Translated by Google •
Tip by
11.7 km
Source of the Ebro
Highlight • River
13.8 km
Refugio de La Guariza
Highlight • Mountain Hut
18.2 km
End point
Parking
Way Types & Surfaces
Way Types
12.4 km
2.08 km
1.83 km
933 m
883 m
Surfaces
9.71 km
5.77 km
1.37 km
1.11 km
143 m
< 100 m
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Highest point (1,080 m)
Lowest point (850 m)
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Sign up for freeWeather
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Sunday 11 October
22°C
9°C
0 %
Additional weather tips
Max wind speed: 15.0 km/h
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Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.
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