Prueba Cicloturista Oscos Granfondo
Santa Eulalia de Oscos · June 14, 2026
The Prueba Cicloturista Oscos Granfondo, part of the Asturias Challenge series, rides through the Oscos-Eo and Terras de Burón Biosphere Reserve starting in Santa Eulalia de Oscos: a timed prologue on Saturday and a 111 km gran fondo with over 2,500 meters of elevation gain on Sunday, along little-travelled mountain passes.
Prueba Cicloturista Oscos Granfondo 2026 has already taken place
Start preparing for the next one: arrive with your gear tested and your form dialled in.
Prueba Cicloturista Oscos Granfondo
The Prueba Cicloturista Oscos Granfondo is one of the most demanding events on the Asturias Challenge, the circuit of cyclosportives that rides through little-known corners of the Principality. It starts in Santa Eulalia de Oscos, in the heart of the Los Oscos region, and runs entirely within the Oscos-Eo and Terras de Burón Biosphere Reserve, one of the least populated and best-preserved areas of Asturias. The format combines a timed prologue on Saturday with the gran fondo on Sunday, following the same scheme used across all Asturias Challenge events.
A 111-kilometer route through Los Oscos
The main course covers 111 km with 2,543 meters of accumulated elevation gain, stringing together narrow, little-travelled mountain passes across the municipalities of Santa Eulalia de Oscos, San Martín de Oscos and Villanueva de Oscos. Riders entered in the combined package also face a 3.8 km timed prologue on Saturday afternoon, whose result is added to the general classification. It’s a distinctly mountainous route with barely any flat resting sections, aimed at cyclists experienced with big elevation gains.
Unspoiled territory and careful organization
What sets this event apart in the Asturian calendar is precisely its location: Los Oscos is one of the most isolated and least-travelled regions in Asturias, with narrow roads that see almost no traffic outside the event. That translates into a route that’s practically free of cars, but also into demanding terrain, with steep ramps and tight bends that reward technical control on the descents as much as power on the climbs.
Los Oscos beyond the ride
Los Oscos comprises three municipalities — Santa Eulalia de Oscos, San Martín de Oscos and Villanueva de Oscos — that preserve an almost untouched rural landscape, with oak and chestnut forests, mountain pastures and traditional architecture linked to the old ironworking industry. Using the event weekend to visit the Ethnographic Museum in Grandas de Salime or explore nearby Taramundi is a natural way to extend your stay. Discover more events in the region in Asturias.
Your 360 Pack
Everything you need to prepare for this event, in one place.
Oscos Granfondo 2026 registration
Registration is managed through AvaiBook Sports. The gran fondo costs €46 and the combined prologue plus gran fondo package costs €60, with limited places due to the mountain course.
Tips
- Sign up early: places sell out fast due to the narrow roads on the course
- The combined package adds Saturday's timed climb to the general classification
Where to stay for the Oscos Granfondo
Los Oscos is a rural area with limited hotel supply; rural houses and small hotels in Santa Eulalia de Oscos and Villanueva de Oscos fill up fast on the event weekend.
Tips
- Book a rural house in Santa Eulalia de Oscos several weeks ahead
- Taramundi and Vegadeo, slightly larger, offer more accommodation options
Bike gear for the Oscos Granfondo
With 2,543 m of climbing over 111 km through Asturian mountain passes, riding with wide-range gearing and reliable components for uneven road surfaces is essential.
Guides to get you ready
Tips
- Fit an 11-34 cassette or similar for the toughest ramps
- Check brake condition before the technical mountain descents
Technical clothing for the Oscos Granfondo
In mid-June inland Asturias, mornings can start cool with fog on the mountain passes, with the chance of scattered rain in the high sections.
Guides to get you ready
Tips
- Pack a light windproof and waterproof jacket in case weather changes on the passes
- Add arm warmers for the start in Santa Eulalia de Oscos
Nutrition for the Oscos Granfondo
With over 2,500 m of accumulated climbing in 111 km, managing your energy is key to still having reserves for the final passes of the route.
Guides to get you ready
Tips
- Make full use of the official feed stations to top up fluids
- Start fuelling from the first kilometers, before the toughest passes
How to get to Santa Eulalia de Oscos
Santa Eulalia de Oscos lies in western Asturias, over two hours by road from Oviedo and close to the border with Galicia.
Guides to get you ready
Tips
- The final approach is via narrow mountain roads: allow extra travel time
- Asturias Airport (Oviedo) is the nearest with regular flights
Car rental in Asturias
To get around Los Oscos and reach Santa Eulalia, the most practical option is renting a car at Asturias Airport or in Oviedo.
Tips
- Book the car in advance for the event weekend
Sports insurance for the Oscos Granfondo
As with any cyclosportive, a federative licence or one-day insurance is mandatory to take the start.
Tips
- Federative licence or one-day insurance required
Body care for the Oscos Granfondo
With 2,543 m of accumulated climbing, legs arrive at the finish heavily fatigued: dedicating time to recovery after the event makes a real difference.
Guides to get you ready
Tips
- Use a roller or massage gun at the finish to release quads and calves
- Wear compression socks on the drive home
Components for the Oscos Granfondo
With 2,543 m of climbing spread across demanding passes, tracking your power from Saturday's prologue to Sunday's final ramp helps you avoid burning your legs too soon.
Guides to get you ready
Tips
- Set a power target per climb so you don't go out too hard in the prologue
- Check the computer's battery level before such a long day in the mountains
Electronics to prepare for the Oscos Granfondo
The Oscos Granfondo's 2,543 m of climbing isn't improvised: long solo rides to rack up hours on climbs are easier with music or a podcast without fully blocking your ears.
Guides to get you ready
Tips
- Bone-conduction headphones keep your ears free for traffic on long road rides
Sunglasses for the Oscos Granfondo
Between the open passes of the Biosphere Reserve and the shaded forest sections, sunglasses that adapt quickly to changing light help on the long technical descents.
Guides to get you ready
Tips
- A light-adaptive lens is useful on descents with intermittent shade through the Asturian passes
