Idiazábal mountain duathlon 2026: date and course

Plan your race pace

Idiazábal will host the second edition of its mountain duathlon on Saturday, November 14, 2026, a race that alternates running and mountain biking across three stages. The announced course comprises an opening 5.64-kilometre run, a 16.54-kilometre bike leg and a final 2-kilometre run, with 1,045 metres of total positive elevation gain according to the published figures for each segment.

The date is confirmed, and registrations are managed by the Basque Triathlon Federation through RockTheSport. There is, however, an important discrepancy over the start time: the platform listing gives 3 p.m., while the organizer’s information says 4 p.m. The start time should be checked against the organizer’s latest announcement before travelling to Idiazábal.

A mountain event with three stages

The competition combines two running sections with a mountain-bike segment in between. It is not a conventional race with one steady pace: each change of discipline shifts the effort and calls for careful management of the body, equipment and transitions. The opening run starts the event, followed by the bike leg and a short final run to the finish. Moving continuously from one stage to the next is part of the challenge, although the specific transition rules and instructions should be checked in the official race information.

The first stage covers 5.64 kilometres with 218 metres of positive elevation gain. Participants then ride 16.54 kilometres on a mountain bike, climbing a total of 758 metres. The final stage adds 2 kilometres and 69 metres of ascent. Together, that makes 24.18 kilometres of activity and 1,045 metres of climbing across the three segments. Those figures do not tell the whole story: surface, gradients, trail conditions and how athletes pace themselves also shape the difficulty.

The mountain-duathlon format sets the event apart from road races and conventional road cycling competitions. The bike leg accounts for the greatest distance and most of the elevation, while the two running sections sit either side of that effort. Participants must reach the final stage with enough left in their legs to run after dismounting. Although short, the final section comes after the fatigue of the opening run and the bike climb.

Date, location and schedule: what is confirmed

The second edition is scheduled for Saturday, November 14, 2026, in Idiazábal, a municipality in Gipuzkoa. The listed organizer is Idiazabal K.E.; Lokatzetan Kirol Kluba also appears in the event information, while registrations are handled by the Basque Triathlon Federation through RockTheSport. These details identify the event and its registration channel, but they do not replace a review of the participation terms and rules. November 14 is the date listed for the race.

The available sources do not agree on the start time. The registration listing shows 3 p.m., while the organizer’s information gives 4 p.m. This is not a minor detail: it affects arrival, race-pack collection and pre-race preparation. The time confirmed by the organizer in its latest notices should take precedence over a listing that may not have been updated. Until clarified, the two times should be treated as an unresolved discrepancy, not as two separate starts.

The available information places the event in Idiazábal but does not specify an address, square or exact meeting point. It also does not provide race-pack collection times, transition-area opening hours or detailed access instructions. Practical details can change between registration opening and race week, so it is sensible to check official announcements before arranging travel. The exact start location should not be inferred from the municipality name alone.

Course and elevation gain

The published route begins with a 5.64-kilometre run and 218 metres of positive elevation gain. That combination suggests an undulating section, but the ascent figure alone does not show whether the climbs are long, concentrated or spread out. The available information also does not include a precise route map, surface details or checkpoint locations. The distance and elevation are confirmed reference points; the official map is needed for the route details.

The bike leg occupies the middle of the event, covering 16.54 kilometres with 758 metres of positive elevation gain. It is the longest segment and accounts for roughly three-quarters of the announced total ascent. In a mountain event, that climbing makes gearing and sustainable pacing important, although the technical difficulty and likely speed cannot be assessed without the profile, terrain and conditions on the day. The cycling stage is the event’s main climbing section.

The final 2-kilometre run adds 69 metres of ascent. Its short distance may make it easy to underestimate, but it comes after the bike leg and demands another change in movement. The transition between disciplines can feel like a reset: the legs shift from pedalling to absorbing the impact of running, and the body has to find a new rhythm. The published distance confirms the final section, but not its detailed profile. How demanding those last 2 kilometres feel will depend on accumulated fatigue as well as the course.

Registration, entry fee and published dates

Registration is listed as being managed by the Basque Triathlon Federation through the RockTheSport platform. The available information gives an opening date of July 27, 2026, and a closing date of November 9, 2026, at 11:59 p.m. The event appears as open for registration in the listing, although that status could change if the field reaches its limit or the organizer adjusts the entry period. The published deadline is November 9, five days before the event.

A third-party event listing gives an entry fee of 20 euros. The other available information does not clarify whether that amount includes a day licence, administration fees or other charges, so it should be treated as the price shown in that listing rather than a guaranteed final cost. The applicable amount is the one displayed during registration when the entry is completed. The available reference price is 20 euros, subject to the platform’s terms.

Before registering, it is useful to check which licence is required and whether the price varies according to the athlete’s federation status. Duathlon events may require an annual or temporary licence, but the information provided here does not specify which applies to this edition or what it costs. There are also no confirmed details about the maximum field size or race categories. Those points should be checked in the registration rules, along with cancellation terms and any additional fees.

How to assess the event’s difficulty

The combined stages provide an initial measure of the workload, not an exact prediction of finishing time. The 24.18 kilometres mix different disciplines and include more than 1,000 metres of positive elevation gain. Compared with a road race of a similar distance, the effort is distributed differently: cycling makes up most of the course, and the climbs shape the pace. The total distance should not be treated as the equivalent of a continuous flat run.

Each participant’s background also changes the experience. Someone used to trail running may feel comfortable in the opening section but still have to manage the bike leg; cyclists then face the challenge of switching back to running. No single stage determines the result on its own. Consistent pacing, effort management and an orderly transition can matter as much as top speed. The event rewards adaptation across disciplines, not just performance in one of them.

November conditions are another factor to consider, without assuming a particular forecast. Rain, mud, cold or dampness can affect grip and comfort, especially on mountain routes. No weather data for race day or detailed surface description is included here, so equipment choices should reflect information released closer to the event. Actual weather and trail conditions can change how the course feels.

Equipment and transitions matter too

In a duathlon, a transition is not a rest: it is the point where athletes change disciplines while the clock keeps running. Having equipment arranged efficiently can avoid unnecessary movements, but the organizer sets the rules for the transition area, permitted equipment and movement through the venue. The published details do not specify what each participant must bring or which race-number system will be used. Official technical instructions take precedence over general recommendations.

The bike should be prepared for a mountain route with 758 metres of positive elevation gain, but a specific setup cannot be recommended without a full technical profile. Checking the brakes, drivetrain, tyres and general condition of the bike is a common precaution for this kind of event. It is also important to find out whether an approved helmet is required and which tools or spare parts are allowed during the race. Mechanical safety matters as much as fitness for the route.

Clothing and footwear should suit the stages and the conditions on the day, rather than an idealized picture of the course. The exact surface is not specified in the available information, so it is not possible to say which shoe or tyre will be best. The organizer may publish specific recommendations and clarify how athletes enter and leave the transition area. Equipment choices depend on the official course and rules, not just the distance.

Idiazábal as the setting for race day

The event takes place in Idiazábal, in the Goierri area of Gipuzkoa. Its mountain surroundings suit the character of the duathlon, although the available details do not identify the specific paths included in the route. Visitors should confirm travel, parking and local services with the organizer or municipal channels. The municipality is confirmed, but the precise start point is not included in the information reviewed.

Allowing extra time for travel is especially sensible when published start times differ. Arriving early leaves room to collect the race number and prepare the bike without relying on a last-minute interpretation. Journey times, parking options and public transport vary according to where participants are travelling from and the day. The final start time affects the whole pre-race plan, so it is worth confirming before setting off.

The event also brings runners and cyclists together in a single competition. That format has a different rhythm from a typical road race: athletes move between changes of pace and technique, while the bike stage changes the dynamics of the group. With no official details about categories or parallel activities, it would be unwise to assume that the event offers services that have not been confirmed. The confirmed essentials are its multisport format and three-stage course.

What still needs confirming before race day

Public information already gives the date, municipality, stage distances, elevation gain and registration channel. Some practical questions remain unanswered in the available details: the final start time, exact start address, full route map and technical rules. It would also be useful to verify licence requirements, mandatory equipment and race-pack collection arrangements. The basic listing is useful, but it does not replace the race regulations.

The discrepancy over the start time deserves particular attention because both references give a specific but different time. The RockTheSport listing says 3 p.m., while the information attributed to the organizer says 4 p.m. There is not enough evidence to present either as definitively correct without an explicit update. The latest confirmation from Idiazabal K.E. or the federation should guide race-day planning.

As for the entry fee, 20 euros appears in a third-party listing, while possible extra charges are not specified in the information reviewed. Registration is listed as open until November 9, but availability should be checked when entering. These details do not change the event’s central facts, although they can affect practical arrangements. The four points to settle are the final time, applicable fee, registration status and race rules.

A race built around changing pace

Idiazábal’s duathlon brings together trail running, cycling and a final running effort in a single event, with the start time still to be confirmed by the organizer. Its structure is clear: 5.64 kilometres to start, 16.54 kilometres on the bike and a final 2 kilometres on foot, with more than 1,000 metres of total climbing. Managing effort runs through the whole event, from the opening section to the finish. It is best understood as a sequence of connected efforts, not one single distance.

The November 14, 2026 event has a confirmed date, federation-managed registration and a reference entry fee of 20 euros. The start time, however, needs clarification because published listings do not match. With the precise route and technical rules still to be checked, the available information gives a useful picture of the event without pretending every detail is settled. The organizer has the final say on the schedule and race conditions.