Domusa Teknik 2027: date, distances and key race details

Plan your race pace

Azpeitia will host a new edition of Domusa Teknik 40 MLK on May 8, 2027, a mountain race offering two routes through the Urola valley. The main distance covers 65 kilometres and around 4,000 metres of positive elevation gain, while the shorter event covers 26 kilometres with about 1,400 metres of climbing. Both races start and finish in the town of Gipuzkoa.

The event will reach its sixth edition, organised by Azpeitiko Lagun Onak Mendi Bazkuna. Available information gives the long-distance race an 8 a.m. start, a 12-hour cutoff, nine aid stations and a maximum field of 550 participants. Elevation figures can vary between editions and event listings: the 2027 details give 4,000 metres of ascent, while some records from earlier years list 3,700.

A mountain event with two distances

The event’s name may suggest that it consists of just one race, but the day includes two options. The main event, called 40 MLK, covers 65 kilometres and climbs nine summits, according to the organisers’ description. The 15 MLK, despite what its name might imply, is not 15 kilometres long: it covers 26 kilometres and gains around 1,400 metres. It is the shorter option, but still has a demanding mountain profile.

The difference between the races is about more than distance. The long course requires runners to manage their effort over many hours, regulate their nutrition and handle changing terrain as fatigue builds. The shorter event limits the time on the course, but its 26 kilometres and 1,400 metres of climbing still call for mountain-running experience and suitable preparation. Both share a start and finish in Azpeitia, while each presents a different challenge.

Whether the 26-kilometre event is classified as a half marathon or the longer one as an ultra depends on the categories used by each race calendar. In common trail-running usage, the 65-kilometre distance falls into ultra-distance; the 26-kilometre course is longer than a conventional half marathon and is better understood as a mid-distance mountain race. The official event information for each edition should be the reference for names, conditions and rules.

The Urola valley, setting for the race

The route links mountain paths around Azpeitia and passes through villages and landscapes across the region. The organisers describe the event as a way to showcase the summits and ancient paths of the Urola valley, where rural scenery and mountainous terrain are part of the experience. The race starts and finishes in the same town, but takes runners out into the surrounding landscape.

For the main distance, the description of nine summits points to a sequence of climbs and descents rather than a uniform course where runners can simply maintain a steady pace. The changes in elevation require runners to adapt their stride: power hiking on steep slopes can be more efficient than running, while technical descents demand attention even when fatigue begins to set in. The final elevation profile and details of each section should be confirmed in the official 2027 information.

The shorter route includes the mountains of Izarraitz and Xoxote, two landmarks highlighted in the 15 MLK description. Its 1,400 metres of ascent make the 26 kilometres a course with significant climbs, not an easy version of the longer race. In any mountain event, distance alone tells only part of the story: elevation gain, terrain, weather and expected time on the move all contribute to the overall challenge.

What the long-distance figures mean

The 65-kilometre distance places the longer event among endurance challenges that require a broader strategy than a road race. The distance is paired with close to 4,000 metres of positive elevation gain, according to the 2027 details. That figure represents cumulative climbing, not the course’s highest altitude, and helps explain why the average speed is likely to be far lower than in a flat race of the same length.

Available information gives the 40 MLK a 12-hour time limit. That cutoff equates to an average of about 5.4 kilometres per hour, but should not be treated as an easy benchmark: it includes climbs, descents, stops and checkpoint passages. Pacing matters as much as fitness, especially over a day when going too hard early on can leave little in reserve for the second half.

Nine aid stations are also listed for the long course, along with a maximum field of 550 participants. Aid stations offer opportunities to replenish fluids and food, but their contents, locations and checkpoint rules should be checked in the current race regulations. The figure of nine aid stations provides a general sense of the logistics; it does not replace the route map or an individual plan for what each runner needs to carry between checkpoints.

The shorter race is no minor undertaking

The 15 MLK’s 26 kilometres may appeal to runners who prefer a shorter day or are not yet ready for an ultra, but the distance does not remove the demands of mountain running. With 1,400 metres of positive elevation gain, the course calls for strength on climbs, control on descents and enough endurance to sustain the effort for several hours. The presence of Izarraitz and Xoxote gives the event a distinct mountain character, rather than that of a fast road race.

The choice between the two events depends on experience and the kind of challenge each participant wants to take on. A newcomer to trail running may find the 15 MLK more manageable in terms of duration, although it would be unwise to treat it as an automatic first step. The longer event, with 65 kilometres, nine summits and a 12-hour cutoff, calls for familiarity with prolonged outings, race-day fuelling and managing fatigue on uneven terrain.

A common mistake when comparing distances is to look only at the kilometres. A 26-kilometre mountain race with sustained climbing can take longer and be more draining than a much longer event on favourable terrain. To assess each option properly, runners should wait for the organisers to publish the 2027 profile, checkpoints and participation conditions. Until then, the announced elevation offers a useful reference but cannot provide a precise estimate of an individual finish time.

A race connected to its local area

The organisers present the event as more than a competition. Its aims include promoting mountaineering, raising the region’s tourism profile and contributing to the local economy, while introducing participants and spectators to local products, landscapes and the villages’ heritage. That local dimension explains why the event is described through more than kilometres and elevation: the course also serves as a showcase for the region.

The stated values include equality, inclusion and environmental respect. The organisers say that prizes and conditions are the same for men and women and express an intention to make sport accessible to people of different abilities and backgrounds. At the aid stations, their stated aim is to reduce plastic use and show maximum respect for the surroundings. These commitments matter particularly when a race passes through paths and natural spaces.

A connection to the region also entails shared responsibility. Runners rely on the trails and landscape to complete the event, while the race brings participants and supporters to local towns for several hours. Looking after paths, following instructions and leaving no litter are basic parts of any mountain race. Here, sustainability is explicitly included among the principles the organisers want to promote, alongside equality and inclusion.

Date, start time and confirmed details

The 2027 edition is scheduled for Saturday, May 8, in Azpeitia, Gipuzkoa. Both distances start and finish in the town. For the long race, the available information gives an 8 a.m. start and a 12-hour cutoff. The date is confirmed in the supplied details, but the precise start location, the 15 MLK start time and full route information are not included here.

A reliable entry fee for this edition has not been provided either. Prices listed by third-party sites may refer to different years or conditions that are no longer current, so they cannot establish the 2027 fee. The same applies to registration opening dates, deadlines, regulations and any mandatory kit requirements: until updated details are published, these items should be treated as unconfirmed.

Historical references provide context, but should not be confused with the programme for the next edition. For example, the 2024 event covered 65 kilometres, and some listings from previous years give 3,700 metres of ascent. The 2027 description, by contrast, gives around 4,000. The difference may reflect route changes or measurement methods; the prudent approach is to use the figure announced for this edition and check the final profile when it becomes available.

Preparing for the course

Preparation for an event like this involves more than adding kilometres. Mountain races demand endurance, the ability to power hike on steep slopes, confidence on descents and experience on varied surfaces. The shorter distance also calls for a specific base if runners want to tackle it comfortably. Tailoring training to the chosen event and increasing workload gradually can help avoid planning mistakes, although each runner must account for their fitness and injury history.

The elevation gain makes it worthwhile to practise on routes with climbs and descents, but a single total does not show how the effort is distributed. A course with long ascents presents a different challenge from one with repeated short climbs; technical descents can also take a toll on the muscles even at a modest speed. Once the 2027 profile is published, it will be easier to see where the hardest sections are concentrated and how checkpoints relate to them.

Nutrition and hydration are part of the strategy, especially over 65 kilometres. The nine announced aid stations help identify support points, but do not reveal what food will be available or what each station will provide. For a long event, runners should check rules on containers, mandatory kit and cutoff times, and test any nutrition plan in advance. The organisers’ official documentation will provide the specific conditions for race day.

An edition rooted in Azpeitia

Starting and finishing in Azpeitia gives the day a clear centre: runners set off from town, head onto valley trails and return after completing one of the two distances. The route connects the atmosphere of a sporting event with the landscapes of nearby villages and mountains. For spectators, schedules, access and designated viewing areas will depend on the logistical information released by the organisers.

The announced cap of 550 participants for the long course suggests a limited field, but does not confirm the final number of available places or when registration will open. Nor does it establish whether the cap applies only to that distance or to the event as a whole. The 2027 race has two options, but the allocation of places and entry fees are not yet available in the information provided; figures from earlier years should not be assumed to apply.

Conditions on the day can change the character of a mountain race. Rain, mud, wind and heat affect both safety and pace, and it is not possible to predict precisely what conditions will be like on the summits in May. The organisers will set operational measures and issue instructions based on the circumstances. Checking the forecast close to race day and following official notices will be more useful than extrapolating weather from past editions.

A day to discover the Urola on foot

Domusa Teknik 40 MLK brings together two ways to explore the mountains of Gipuzkoa on the same day: a 65-kilometre ultra and a 26-kilometre alternative. The longer event combines nine summits with close to 4,000 metres of ascent announced for 2027; the shorter one takes runners towards Izarraitz and Xoxote over a more contained distance, but with elevation gain that still demands respect. Azpeitia serves as both gateway and finish point.

The event’s appeal is not limited to its numbers. Its focus on valley trails, local heritage and the principles of equality, inclusion and environmental care gives context to a race that aims to showcase the region as well as sporting performance. As May approaches, the profile, full schedules, registration details and regulations will make precise planning possible. For now, the confirmed date and two distances outline the core of a trail-running day shaped by the Urola landscape.