The Ebro Reservoir trail race: date and 12-kilometre course

Plan your race pace

The mountain race planned near the Ebro Reservoir has an announced date: Saturday, October 31, 2026. Available information places the start in La Riva, within the Cantabrian municipality of Campoo de Yuso, and gives the distance as 12 kilometres. It is a short format compared with long mountain races, although the profile, elevation gain and exact surface are not yet included in the data consulted.

That is the core of what can be stated with confidence: a 12-kilometre trail race in Cantabria, scheduled for the last Saturday in October. No start time, entry fee, registration deadline or detailed route has been published here. The distinction between confirmed details and those still pending matters: it allows people to plan sensibly without turning a sparse event listing into promises about the course or its organisation.

Race date and location

The event is scheduled for October 31, 2026, which falls on a Saturday. The additional data identify La Riva, in Campoo de Yuso, a more precise location than the municipality named in some directories. The broader setting is the Ebro Reservoir area in the Cantabrian region of Campoo, but no exact address for the start or finish has been provided.

Knowing the precise location affects more than the point entered into a navigation app. At a rural race, access, parking and the distance between the inhabited area and the gathering point can all change the logistics of the morning. La Riva is the location specified for this edition; until the meeting point is announced, there is no basis for assuming that the start will be in a square, by the shoreline or at a particular facility.

Known distance and missing route details

The announced distance is 12 kilometres, a format that is often more accessible than a mountain half marathon but still calls for attention to the terrain. In trail running, distance does not tell the whole story: a long climb, mud or a technical descent can make an apparently short course take more time and effort than an urban race of the same length.

There are currently no reliable details about total elevation gain, surface type, the location of the hardest sections or the availability of aid stations. Nor is there a map showing whether the route follows the water, forest tracks or footpaths. Without an official profile or route, the actual difficulty cannot be assessed, and a responsible finish-time estimate is not possible; any more specific description would be speculation.

A short distance does not necessarily mean an easy course

The 12-kilometre distance may appeal both to runners familiar with trails and to those looking for a first experience over a manageable length. However, distance alone does not determine whether a race is suitable for someone. Elevation, uneven ground, weather and prior experience all matter, and those details have not yet been provided for this event.

On asphalt, pace is usually a relatively consistent guide; on mountain terrain, it changes with every slope and surface. A wide track allows a different running style from a narrow path with wet stones. That is why the 12-kilometre figure should be read as a distance, not a promise of ease. The route information will make it possible to compare the race with each participant’s fitness and expectations.

The Ebro Reservoir as a race setting

The reservoir gives the event its name and shapes the area’s landscape, but there is no confirmation that the course circles the water or offers continuous views of it. In a setting of mountains and valleys, the landscape can change within minutes: an open track, a wooded stretch and a path beside a slope each feel different, even within the same route.

The race is scheduled for late October, when daylight is shorter than in summer and conditions can vary. That does not guarantee rain, cold or mud on race day, but it does make it sensible to follow the forecast as the date approaches. The landscape is part of the potential appeal, not an official route description: only the organisers’ map can confirm how much of the course is shaped by the reservoir.

Preparation and kit with the details currently available

Until the course profile is published, the most sensible preparation is general: maintain a regular running base and, when possible, include routes on natural terrain. Climbs and descents require different movement from a uniform surface, and the legs benefit from gradually adapting to those changes. There is no need to turn a 12-kilometre event into a long-distance training project, but relying only on the number on the race bib would be unwise.

Footwear should be selected according to the terrain eventually described by the organisers. Trail shoes usually provide more grip than road shoes, although the right tread and stability depend on the surface. For an autumn event, wearing layers makes it easier to adjust to temperature changes; whether to carry water, a windbreaker or other equipment will depend on the expected duration, weather and published rules.

Registration, entry fee and organisation: details still pending

The reference information does not identify a verifiable organising body or provide an official registration link. It also gives no entry fees, categories, participant limit, rules or runner services. Some portals display event listings, but a calendar entry is not a substitute for an organiser’s announcement and does not by itself confirm that registration is open.

Before paying or travelling, it is sensible to check that the registration channel applies to the 2026 edition and sets out the relevant conditions. No entry fee is confirmed in the available information, so naming an amount would mean inventing it. It is also worth checking whether a licence is required, what happens in the event of cancellation, the schedule and any mandatory safety or equipment guidance.

How to interpret dates shown on different portals

Race calendars can carry incomplete, duplicated or edition-specific information. In this case, one reference listing gives August 15, 2026, while other records place the event on October 31. The October 31 date appears repeatedly in the main references and matches the information provided for this article, so it is the date used here for the announced event.

Different dates do not by themselves prove that the race has changed days; they may result from data-entry errors or outdated information. Final confirmation should come from the organisers, especially if the date affects bookings or travel. Another listing mentions a May 2027 edition, but that does not establish that it is the same event or justify changing the details announced for October 2026.

What to confirm before travelling to La Riva

The distance to the start can only be calculated accurately once its exact location is known. La Riva and Campoo de Yuso identify the event area, but they are not enough to plan parking, allow for arrival time or determine whether access restrictions will apply. At an event whose start is outside an urban centre, a difference of a few kilometres can affect travel times and logistics.

Details about bag drop, toilets, medical support, aid stations and course marking are also missing. These services should not be assumed simply because they are common at other races. The rules and pre-race instructions will be the practical reference for what to bring, when to arrive and how to respond to an incident on the course.

A race to assess once full details are available

For now, the race profile is easy to summarise but limited in detail: 12 kilometres of trail, in La Riva, Campoo de Yuso, with an announced date of October 31, 2026. That is enough to identify the event, but not to describe its difficulty, estimate times or compare the course with other races in the region. Careful reporting means separating published facts from information that has not yet been confirmed.

Once the map, elevation, schedule and registration conditions are known, it will be possible to form a fuller picture of race day. Until then, the date and distance are the strongest details available, while the route and logistics remain subject to confirmation. In a mountain race, that information is not a minor detail: it is the map that turns a date into a realistic plan.

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