· National
· GR 109
Hard
Asturias Interior (Etapa 21)
📏
15.4 km
Distance
⏱
3h 51min
Est. duration
⛰
Hard
Difficulty
➡
Linear
Route type
Asturias Interior (Etapa 21) is a 15.4 km National Hiking hiking route.
A 15.4 km full-day trail that rewards walkers with a proper day out. Budget roughly 3 hours and 26 minutes at a steady pace.
This is a point-to-point route, running from one location to another. Plan ahead for return transport, or consider reversing the route on your way back. The trail is officially waymarked as GR 109, so look out for the trail markers along the way.
This route is part of the National Walking Network (NWN) — a flagship trail maintained to national standards, often following scenic or historically significant corridors.
Elevation Profile
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Elevation data from SRTM via OpenTopoData (open dataset).
Map
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Waypoints
5 points along the routeA
Start
· Tuña
B
Finish
· Onón
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Frequently Asked Questions
How long is the Asturias Interior (Etapa 21) hiking route?
Asturias Interior (Etapa 21) is 15.4 km long.
How much time should I allow for Asturias Interior (Etapa 21)?
Most walkers allow around 3h 51min for Asturias Interior (Etapa 21) at a comfortable pace.
Is Asturias Interior (Etapa 21) a circular or linear route?
Asturias Interior (Etapa 21) is a linear route, not a loop. It runs from Tuña to Onón. Return transport from the finish point is recommended.
Where does Asturias Interior (Etapa 21) start?
Asturias Interior (Etapa 21) starts at Tuña.
Is Asturias Interior (Etapa 21) suitable for beginners?
Asturias Interior (Etapa 21) is not recommended for beginners. Good fitness and trail experience are needed.
Who maintains the Asturias Interior (Etapa 21) trail?
Asturias Interior (Etapa 21) is maintained and managed by Fempa.
Is Asturias Interior (Etapa 21) part of a larger trail network?
Yes, Asturias Interior (Etapa 21) is part of the National Walking Network (NWN), connecting this route to a wider network of long-distance hiking trails.