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Mountain passes

San Isidro Road

Mountain passes

San Isidro Road

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Highlight • Trail

San Isidro Road

Name: San Isidro Road
Rating: 2

People Who've Recommended This Place

Diro20

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Fermo

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Javier

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Olaf - iamcycling

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Kroncycling Rennradreisen

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Jorge Verdejo

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Done

Recommended by 7 road cyclists

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Location: Aller, Mieres, Asturias, Spain

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See rides here

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Routes here

Best Road Cycling Rides to San Isidro Road

riders

1. Puerto de las Señales – Tarna Pass loop from Ujo

147km

07:33

2,490m

Hard road ride. Very good fitness required. Mostly well-paved surfaces and easy to ride.

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How to understand each route’s difficulty level

Hiking

Cycling

Mountain biking

Road cycling

Running

Easy

Up to 2 hours and 1,000 ft. of elevation gain. Great for any fitness level.Mostly well-paved surfaces and easy to ride.

Moderate

Up to 5 hours and 3,000 ft. of elevation gain. Requires good fitness.Some segments of this route may be unpaved and difficult to ride.

Hard

More than 5 hours or 3,000 ft. of elevation gain. Requires very good fitness.You may need to push your bike for some segments of this route.

Hard

riders

2. Alto de San Isidro – San Isidro Road loop from Maraña

88.0km

04:40

1,670m

Hard road ride. Very good fitness required. Mostly well-paved surfaces and easy to ride.

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How to understand each route’s difficulty level

Hiking

Cycling

Mountain biking

Road cycling

Running

Easy

Up to 2 hours and 1,000 ft. of elevation gain. Great for any fitness level.Mostly well-paved surfaces and easy to ride.

Moderate

Up to 5 hours and 3,000 ft. of elevation gain. Requires good fitness.Some segments of this route may be unpaved and difficult to ride.

Hard

More than 5 hours or 3,000 ft. of elevation gain. Requires very good fitness.You may need to push your bike for some segments of this route.

Hard

riders

3. San Isidro Road – Alto de San Isidro loop from Felechosa

30.7km

01:57

910m

Hard road ride. Very good fitness required. Mostly well-paved surfaces and easy to ride.

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How to understand each route’s difficulty level

Hiking

Cycling

Mountain biking

Road cycling

Running

Easy

Up to 2 hours and 1,000 ft. of elevation gain. Great for any fitness level.Mostly well-paved surfaces and easy to ride.

Moderate

Up to 5 hours and 3,000 ft. of elevation gain. Requires good fitness.Some segments of this route may be unpaved and difficult to ride.

Hard

More than 5 hours or 3,000 ft. of elevation gain. Requires very good fitness.You may need to push your bike for some segments of this route.

Hard

Tips

Alvaro Hernandez

September 25, 2025

This road runs along the bottom of the Aller River valley and crosses spectacular mountain scenery. You'll surely be tempted to stop and take photos and admire the landscape.

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Details

Informations

Elevation 1,100 m

Weather

Thursday 1 January

4°C

-2°C

80 %

Additional weather tips

Max wind speed: 9.0 km/h

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Location: Aller, Mieres, Asturias, Spain

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