Oso Trail Proaza 2026: dates, course and prices

Plan your race pace

Proaza will host the second edition of its mountain race on 20 December 2026, featuring a main event of 14 kilometres and around 783 metres of positive elevation gain. The start is scheduled for 10:00, and the sporting programme begins the previous day with a 5-kilometre vertical race on Saturday 19 December. The Asturian event also includes categories for walkers and young participants.

Entries are listed as open in the organisers’ information, with different fees depending on the category: 23 euros for the trail race and 17 euros for the vertical. Combined entries and additional categories are also listed. The registration calendar gives 6 December as the closing date, although it is worth checking for any changes to the course, schedule or conditions before travelling.

Two days of mountain running in Proaza

The event takes place over the weekend of 19 and 20 December. Saturday is set aside for the vertical race, while the main course is held on Sunday. This makes the event more than a Sunday run: it offers two competition formats with different demands, for runners who want a fast climb or a longer trail route.

The second edition takes place in the municipality of Proaza, in inland Asturias. The landscape combines meadows, Atlantic woodland and mountain slopes, all of which shape the character of the race and the ground underfoot. December adds an important variable: rain, mud, cold and damp conditions can affect the experience, although the actual weather will only become clear closer to race day.

The event is listed as confirmed for 2026, with entries published through RockTheSport and LOBO RACE OCR named as organiser. The available information sets the Sunday trail start at 10:00. For visitors, it is useful to distinguish between the administrative address shown on the platform and the start location described in the race documents, because the start and finish are listed on Calle La Abadía, opposite the Town Hall.

The main course and its demands

The Sunday trail covers 14 kilometres and approximately 783 metres of positive elevation gain, according to the information available for this edition. It is not a long-distance ultra, but the climbing figure points to a demanding route, with enough accumulated ascent for pace to depend on both fitness and effort management. The combination of distance and elevation makes it a short but distinctly mountainous race.

In a race of this kind, finishing time cannot be estimated as it would be on a flat road circuit. Gradient, ground conditions, changes of pace and technical sections can matter more than the mileage. A wet or muddy trail calls for shorter strides and careful foot placement; on a sustained climb, saving energy may matter more than trying to gain seconds early. Reading the terrain is part of the challenge.

The published information gives the distance and elevation gain, but the reference details do not set out every section, a complete elevation profile or the aid-station locations. These details should not be assumed. Updated race rules or a course map may clarify the route, support points and equipment requirements. Until then, the safest description is a 14-kilometre race with around 783 metres of positive elevation, without attributing unconfirmed features to the course.

Saturday’s vertical race

The 19 December programme includes a 5-kilometre vertical race with approximately 900 metres of positive elevation gain. It is much shorter than Sunday’s trail, but the climbing is substantial relative to the distance. In practical terms, this format concentrates the difficulty in the ascent and may require intense effort from the opening metres. The vertical race is all about gaining height over a short distance.

The profile suits runners who enjoy steep slopes and know how to control their effort as the ground rises. On a sharp climb, running every step is not always efficient: a purposeful hike can help maintain a steadier effort, especially when the gradient continues. Technique matters too, from secure foot placement to avoiding early surges that push breathing too hard. Effort management matters as much as speed.

The vertical race is scheduled for Saturday, but the reference information does not give a specific start time. The 10:00 time should not automatically be applied to it; that time belongs to Sunday’s main race. Anyone considering both events can check the updated programme, bib collection times and combined-entry conditions. The organiser lists a combined fee, although the schedule and recovery time depend on the final official programme.

Walkers and young participants

The programme is not limited to the two competitive races. It also lists an Andarines category for walkers, described as a short route, and Crece Trail FEMPA for young participants. These options broaden the event and allow people with different paces and ages to share the same setting. The programme offers alternatives to timed competition.

No distance or elevation is specified for the walkers’ route in the information consulted, so its difficulty and duration cannot be assessed precisely. The description short route is a general indication, not a technical course profile. Before entering, it is sensible to check the organiser’s details on route, participation conditions and any requirements. For the youth category, age limits and any required permissions should also be checked, as these details need confirmation in the current rules.

The published fees are 18 euros for walkers and 10 euros for Crece Trail FEMPA. These separate prices show that the categories have their own conditions and are not automatically included in a trail race entry. For anyone entering both races, the listed combined option for the trail and vertical costs 35 euros. The fee depends on the chosen category, and may change if the organisers update the conditions before registration closes.

Registration, fees and deadlines

The registration platform gives an entry period from 8 September to 6 December 2026. At the time of consultation, entries for this edition are listed as open. The stated fees, including taxes, are 23 euros for the trail, 17 euros for the vertical, 35 euros for the combined entry, 18 euros for walkers and 10 euros for Crece Trail FEMPA. The combined entry costs less than entering the trail and vertical separately.

The published closing date does not guarantee that places will remain available until then or that fees will stay unchanged. The platform may show changes, issues or sold-out entries, so the event listing is the practical reference for registration status. It is also worth checking cancellation, transfer and refund conditions, particularly if travel to Asturias requires transport or accommodation booked in advance. The entry price alone does not explain all participation conditions.

The reference information confirms Sunday 20 December as the trail date and 10:00 as its start time. The vertical is scheduled for Saturday 19 December, but no time is given in the details consulted. Proaza is listed as the venue; the platform shows Ctra. General, 1 as the event address, while the race documents place the start and finish on Calle La Abadía, opposite the Town Hall. Check the exact location and time for each category in the latest event information.

What to expect in December

An Asturian mountain race in December can offer an especially striking landscape, with vivid green meadows and moisture hanging among the trees. It also means accepting that the weather can change quickly. Cold, rain, wind or fog are possibilities at this time of year, not confirmed conditions for race day. The distinction matters: check the forecast close to the event rather than relying on assumptions.

Footwear and clothing choices will depend on the actual course conditions and the rules. Grippy shoes can be useful on muddy paths, while a lightweight waterproof layer can help manage rain without carrying unnecessary clothing. In a race with significant elevation, clothing that allows runners to manage their temperature on both climbs and descents also matters. Equipment should suit the terrain and expected weather, rather than follow one formula for everyone.

The information consulted does not confirm mandatory equipment, available aid stations or time limits. Those details can matter to both experienced runners and people new to trail racing. Reading the updated rules helps separate general advice from official requirements. Caution is particularly relevant in winter, when the ground may be slippery and a minor incident can take longer to resolve in the mountains. The final rules take precedence over assumptions based on previous editions.

Understanding the distance and elevation

The main course’s 14 kilometres may seem manageable to a regular runner, but the elevation gain changes how that figure should be read. The 783 metres represent the total accumulated climbing, not necessarily one continuous ascent. Horizontal distance describes only part of the effort: gradient and surface determine how hard it is to move forward and how long the route takes. In the mountains, kilometres do not tell the whole story.

Saturday’s vertical race makes the point clearly: 5 kilometres and around 900 metres of positive elevation concentrate a lot of climbing over a short distance. It is not a direct comparison with Sunday’s race, since the course designs and difficulty may differ, but it does show that the vertical has a distinct physical demand. Anyone assessing their preparation should consider elevation, climb type and effort duration as well as distance. The course profile is essential to understanding each category.

The general figures also have limits. The maximum altitude, proportion of trail, technical sections and total descent are not specified. Without those details, it is not possible to map the full profile or anticipate every challenge. The confirmed information is enough to compare the scale of the races and identify their mountain character, but not to reconstruct every turn. The technical description should be completed using the organiser’s rules and course map.

Proaza as a trail-running setting

The municipality of Proaza lies in an inland landscape where mountains and valleys are part of everyday life. For a race, this setting is not separate from the sport: it determines the gradients, surface and relationship between runners and the environment. Atlantic woodland and meadows can create striking contrasts in colour and texture, although the exact route for this edition should be checked on its official map. The character of the place is expressed in both its scenery and terrain.

The arrival of runners and spectators may also bring more activity to the town centre over the weekend. Checking the start location, access and logistics in advance can prevent confusion between the administrative address shown on the platform and the race location. The available details put the start and finish on Calle La Abadía, opposite the Town Hall, while the registration listing gives Ctra. General, 1. The two addresses appear in the information consulted for different purposes.

The appeal of running in a rural setting does not remove the need to look after it. Staying on the marked course, following organiser instructions and leaving no litter are essential practices in any mountain event. In wet areas, repeated steps off the path can damage the soil and vegetation. The pace of the race changes, but responsibility remains: the landscape that makes the event distinctive also deserves care and respect.

Check the details before travelling

The confirmed information makes the main details clear: Proaza hosts the trail on Sunday 20 December 2026 at 10:00; the main course is 14 kilometres with around 783 metres of positive elevation gain; and the 5-kilometre vertical with 900 metres of climbing is scheduled for Saturday 19 December. Walkers and Crece Trail FEMPA complete the programme, although their technical details are not specified in the available information. Two days and several categories define this edition.

Published fees range from 10 to 35 euros, depending on the chosen option, and the stated registration deadline is 6 December. The main race is listed as open in the information consulted, but availability may change before that date. The vertical’s start time, details for the additional categories, aid stations and mandatory equipment need confirmation in the latest event listing. General details help with planning, but do not replace the race rules.

With those points in mind, the second edition brings together a relatively short mountain race, an intense vertical climb and alternatives for other types of participants. Proaza provides the natural setting; elevation and the season account for much of the challenge. For anyone considering taking part, the most useful measure may not be the distance alone, but the combination of climbing, winter terrain and two different days of racing. In this event, the mountain is measured in conditions as well as metres.