Sierra del Crespón
From Villamorey · km 1.5 → 5.5
- Length
- 4.0 km
- Elevation gain
- +584 m
- Average gradient
- 14.6 %
- Max. in 100 m
- 47 %
SOBRESCOBIO REDES TRAIL
Skyrunning
The Sobrescobio Redes Trail (Sobrescobio SkyRace®) is a skyrunning race with more than a decade of history, born in the heart of the Redes Natural Park, with both start and finish in Ríoseco. Its flagship race covers 32 km with 2,100 m of elevation gain, on a demanding course that combines fast trails, steep climbs and technical sections. In recent years, it has established itself among the international elite by becoming part of the Merrell Skyrunner® World Series and by hosting key events in the circuit, such as the U23 Final.
During the race, the route passes through iconic locations such as Soto de Agues, Cabaña de Trapa, Fresnu, Retortoriu, the summits of Pico Cogollu and Ladines, before returning once again to Ríoseco, offering an authentic “village race for the world” experience in one of the most special landscapes in Asturias.
- Distance
- 32 km
- Elevation gain
- 2,100 m+
- Start
- Rioseco
- Time
- 9:00
Course and profile
Follow the SOT over the real terrain of the Redes Natural Park: where it climbs, where it descends and where it turns. Move along the profile and the map shows where you are, the altitude, the gradient and how far it is to the next aid station. With Fly the course in 3D, the camera runs the whole race for you.
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SOT Skyrace 32 km · +2,100 m
- Uphill< 10 %10–20 %20–30 %> 30 %
- Flat
- Downhill< 10 %10–20 %> 20 %
Move your mouse or finger along the profile to follow the course on the map.
400 m600 m800 m1,000 m1,200 m1,400 mSierra del Crespón 976 mPico Cogollu 1,219 mFresnu 1,069 m
Profile calculated on the official Wikiloc track with altitudes from Spain’s National Geographic Institute (IGN, 5 m terrain model). GPS distances may differ slightly from the official ones.
Climb profiles
The three big climbs of the race, kilometre by kilometre, with their gradients. Tap «Show on the map» to see them head-on, from the bottom.
Pico Cogollu
From Soto de Agues · km 9.4 → 14.6
- Length
- 5.2 km
- Elevation gain
- +782 m
- Average gradient
- 15.2 %
- Max. in 100 m
- 45 %
Fresnu
From Retortoriu · km 20.7 → 23.6
- Length
- 2.9 km
- Elevation gain
- +519 m
- Average gradient
- 17.8 %
- Max. in 100 m
- 37 %
Mandatory Gear
Suitable footwear
Suitable clothing
Cup or container
Race bib visible on the front
Mobile phone
Hooded windproof jacket
GPS (Skyrunner WS)
Thermal blanket
Adverse Weather Kit
Must be brought to the event. The organisation may activate it at any time, including the day before the race, and will announce it by email or SMS (official channels).
Beanie or buff
Whistle
Gloves- Long-sleeved waterproof jacket with hood
Aid Stations with History
At the Sobrescobio Redes Trail, aid stations are not just “checkpoints”; they are places with soul. Here, runners do not simply refuel to keep going; they recharge in villages, mountain huts and iconic mountain passes of the Redes Natural Park, each with its own history, landscape and identity. Every stop has its own kind of magic: it places you, shelters you and sets your rhythm for the next section.
Km 9.6
SOTO DE AGUES
Liquid and solid aid station
Gateway to the famous Ruta del Alba, one of the most iconic routes in the Redes Natural Park.
Km 17
TRAPA
Liquid and solid aid station
A classic crossing point in Redes and one of its most magical spots, closely linked to chestnut groves and beech forests.
Km 20
RETORTORIU
Liquid aid station
An iconic point along the Alba route. Fast water stop, then back to the climb.
Km 23.5
FRESNU
Liquid and solid aid station
A high mountain pasture area. The last substantial aid station before the final summit.
Km 28
LADINES
Liquid and solid aid station
The final aid station. It leaves you ready for the last push back to Rioseco.
Best Times
The SOT Skyrunning is the most demanding and untamed version of the course: more mountain, more climbing, and sections where mental strength matters just as much as physical power. These are the fastest times in the race’s history, benchmark performances that define the standard of skyracing in Redes.
Fastest Men’s Times – SOT Skyrace
| Position | Runner | Time |
|---|---|---|
| 1 | Frédéric Tranchand | 2h39:14 |
| 2 | Jan Torrella | 2h42:06 |
| 3 | Marcos Villamuera | 2h42:27 |
| 4 | Manuel Merillas Moledo | 2h43:42 |
| 5 | Ibai Larrea | 2h45:25 |
Fastest Women’s Times – SOT Skyrace
| Position | Runner | Time |
|---|---|---|
| 1 | Sara Alonso | 3h14:02 |
| 2 | Naiara Irigoyen | 3h23:06 |
| 3 | Greta García Morán | 3h23:55 |
| 4 | Lucille Germain | 3h25:35 |
| 5 | Patricia Pineda | 3h26:46 |
How to Get There
Rioseco (Sobrescobio) is the start and finish area of the race. It can be reached by car via the AS-117 (Nalón corridor), taking the turn-off towards Sobrescobio / Redes Natural Park and following the signs to Rioseco. As this is a mountain road, please allow extra time, especially on race day. Parking may be signposted and managed by the organisation.
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