WOP Challenge Bilbao-Bizkaia 2026: route, formats and dates

Plan your race pace

Bilbao and Bizkaia will once again become the setting for a team sporting adventure on Oct. 24-25, 2026. The event combines trail running, running and trekking in a relay format that crosses municipalities, natural areas and landmarks before finishing in Bilbao.

The event offers three ways to take part: a 226-kilometer route divided into 19 stages, a 57-kilometer daytime option and a trekking format over the same distance. More than a conventional race, the challenge requires organization, strategy and coordination among relay members, as well as physical preparation suited to each stage.

General information about the event can be checked alongside the popular races calendar and the race map published by Running Valencia. It forms part of a national calendar that places this Basque event within the trail and team-racing season.

A race that turns Bizkaia into the route

The main attraction lies in the structure of the course itself. Participants do not stay on a closed circuit or repeat laps around one municipality. Instead, they move through different Bizkaia landscapes, linking urban areas, paths and natural surroundings of interest. The experience resembles an organized sporting traverse more than a single-distance road race.

The finish is linked to Estropatada, a celebration on the Bilbao estuary featuring live music, food, children’s activities and a duck race. This creates a distinctive contrast: after hours of effort, relay changes and transfers, the finish becomes a festive space for participants and supporters.

This format also changes the way the event is experienced. The outcome does not depend solely on individual speed, because each team must decide who tackles each stage, how efforts are distributed and how much time is needed to reach the changeover points. The race is built by the whole group, even when only one member is moving.

Three formats for different profiles

The Full format is the longest option. It covers 226 kilometers and 19 stages, takes place during both daytime and nighttime, and allows teams of two to 12 relay members. The start is in Bilbao on Oct. 24 and the route returns to the city the following day, making rest and transfers especially important.

The 1Day format concentrates the challenge into 57 kilometers and six daytime stages. It is designed for groups of two to five people and offers a shorter overall experience, although it is not necessarily easy physically. Distance, elevation gain and terrain may demand preparation similar to a one-day mountain race.

The Walk format also covers 57 kilometers, but allows stages to be distributed to suit the team and accepts groups of two to eight members. Its trekking focus broadens the range of participants and emphasizes endurance, consistency and the ability to complete the route without turning every stage into a race for pace. The differences between formats go beyond kilometers: they also involve schedules, changeovers and logistics.

What relay running involves

In a relay event, each runner covers part of the course while the rest travel to the next changeover point or wait for their turn. This creates breaks, but it does not remove the physical demands. The body has to recover in unusual conditions, with variable schedules, vehicle transfers and the need to become active again when it is time to take over.

The Full format adds the difficulty of night stages. Running after dark changes how the terrain is perceived, reduces visibility and requires closer attention to markings, mandatory equipment and communication. A headlamp, dry clothing and preparation for temperature changes are no longer minor details but basic elements of safety and self-sufficiency.

Planning starts before race weekend. The team must understand each stage, assess every participant’s level and create a realistic rotation. It must also calculate transfer times between changeover points, because a poorly coordinated change can affect the entire day. In this setting, strategy is not an abstract idea; it appears in decisions about pace, rest and transport.

Distances, elevation and terrain

Available references place the long course at around 225-226 kilometers and the shorter course near 56-57 kilometers. The official 2026 figures presented are 226 kilometers for Full and 57 kilometers for 1Day and Walk. Small differences between sources may result from rounding or different ways of presenting the course, so the final stage information should be checked in the regulations and official documentation.

Specialist platforms report about 5,000 meters of elevation gain and loss for the full route, while the 57-kilometer options are shown with approximately 700 meters up and 700 meters down. These figures suggest a demanding profile, but they do not replace a detailed analysis of each stage. Elevation may be concentrated in one section and completely change how a seemingly manageable distance feels.

The route is presented as a way to discover Bizkaia through its paths and municipalities. In a few hours, participants may move from a more urban area to forest, hillside or rural tracks. This variety keeps the visual experience alive, but also requires adaptation in stride and equipment. Changing terrain demands more attention than a uniform asphalt distance, especially when humidity, mud or uneven surfaces appear.

Tracking, checkpoints and support

Each team receives a geolocation chip that must be carried by the official relay runner for each stage. The system allows the race control center to track participants in real time and offers an additional reference for coordinating the event. It does not replace individual responsibility or the need to know the route, but it adds an important layer of supervision across a long course.

The organization includes checkpoints and aid stations along the route. In an event of this type, these areas verify passage, provide fluids and food and organize the flow of runners. They also help identify incidents before they become larger problems, especially in a format that may continue through daytime and nighttime.

The safety operation includes medical staff and different support resources, including a field hospital, ambulances, bicycles, motorcycles, quads and all-terrain vehicles. This presence is particularly relevant in areas far from urban centers. Even so, a mountain race or trek requires every participant to use personal judgment and respect individual limits. Organized support improves coverage but does not replace preparation or caution.

Logistics are part of the challenge

The main difference from an individual 10K or half marathon lies in logistics. The group needs to know where each relay member must be, how long the current runner may take and what transfer margin exists before the next changeover. A larger team can distribute the effort more widely, but it must also coordinate more people and vehicles.

Rest deserves specific attention. The Full format requires participants to manage activity and waiting over a compressed two-day period, with possible changes in sleep and eating patterns. It is not enough to assign the longest stages to those with the fastest times; experience in the mountains, tolerance for nighttime running and the ability to hold a steady pace under fatigue also matter.

Equipment should match the selected format and the weather conditions expected in Bizkaia during October. Rain can change the ground, humidity can cool the body quickly during a break and wind can alter the perceived temperature in exposed areas. Grippy footwear, adjustable layers, nighttime lighting and spare fluids are all part of sensible preparation. In long relays, a forgotten item can weigh as heavily as several extra kilometers.

Stage 0 and the social commitment

Participation includes a requirement that distinguishes this event from many sporting races. To receive bibs and take part, teams must complete the so-called Stage 0. This phase does not involve running kilometers, but generating minutes in the fight against neurodegenerative diseases through Estropatada ticket sales or a financial contribution.

The mechanism connects the sporting experience with the social work of The Walk On Project. The physical challenge serves as a meeting point, while the project extends to a cause linked to research and the fight against neurodegenerative diseases. A team does not arrive at the start line with registration alone: it also accepts a prior social requirement for formal participation.

Stage 0 changes the meaning of the clock and the rankings. The event keeps its sporting components, but adds a collective dimension that cannot be measured in seconds. Cooperation begins before the first relay and continues beyond the finish, when the event brings athletes, families and spectators together around Estropatada.

Bilbao as the starting point and meeting place

Bilbao is the central reference point for the event. The Full format starts in the city on Oct. 24 and returns on Oct. 25, while 1Day and Walk have their start and finish in Bilbao according to the available institutional information. The city is therefore the gateway to a route that extends toward other municipalities and areas of the territory.

For supporters, the urban location of the finish makes it easier to follow the arrival atmosphere and take part in the final activities. Estropatada creates a scene different from a conventional finish: the estuary, music, food stalls and family activities turn the end into a shared celebration. The event does not end when the last relay runner crosses the line, but when the sporting effort flows into the festival.

The event may also appeal to runners who want to discover the Basque Country through an active experience. The route does not simply provide a landscape in the background; transfers between municipalities, changes in terrain and the succession of stages all become part of the experience. This combination explains why the event can attract both experienced trail runners and groups who prefer walking and completing the route progressively.

What teams should check before registering

Before registering, teams should check which format matches their actual level. Full requires availability over two days, the ability to cover daytime and nighttime stages and more complex logistics. 1Day shortens the overall duration but retains the challenge of 57 kilometers split into six sections. Walk offers an alternative less focused on speed, although the total distance remains substantial.

It is also necessary to read the regulations and documents published by the organization. Participation conditions, required equipment, start times, relay points and bib collection procedures can shape the experience as much as training. The reference information does not include the entry fee, so that amount should be confirmed through the official channel before any registration is completed.

Team composition should involve more than personal best times. A balanced group includes people able to handle different paces, navigate changing conditions and communicate clearly. In a relay race, responsibility is shared: the runner must report how they are feeling, while those waiting must be ready to coordinate. Trust between relay members is a practical tool, not merely an added value.

A sporting experience on a different scale

The route, formats and support operation place this event somewhere between a trail race, a trek and a team activity. Not every participant needs the same profile, but everyone must understand the nature of the challenge. Full can approach an ultramarathon in total distance, although the effort is shared among relay members; the 57-kilometer options concentrate the experience into a more manageable day.

Time spent together during breaks is as important as the timed stages. The team shares vehicles, decisions, meals, silence and fatigue. The mountains feel different when the goal is not only to improve an individual time, but to keep the group moving until the finish. The finish belongs to the entire team, including those who spend more time organizing than running.

On Oct. 24-25, 2026, Bizkaia will host an event with three operational formats, multiple stages and a social purpose built into the participation system. The proposal combines endurance sport, active tourism and popular celebration without being reduced to any one of those categories. Its scale becomes clear in the sequence of events: one runner takes over, the GPS records the progress, the team moves to the next point and, finally, Bilbao welcomes everyone at a festival connected to a collective cause.

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