Marbella’s T100 triathlon: date, course and distances

Plan your race pace

Marbella will host a new event on the T100 circuit on the weekend of September 18-19, 2027, with a 100-kilometre triathlon open to professionals and age-group athletes. The format combines a 2-kilometre sea swim, 80 kilometres of cycling and an 18-kilometre run. Organisers place the swim near the city’s beaches and describe a demanding bike leg, with roads climbing toward the mountains.

Published information already confirms the date and the broad outline of the course, but does not specify race schedules, the final route map, entry fees or total elevation gain. The event page offers priority access through a form, while full registration details remain pending. The distinction matters: joining the priority list does not mean a race entry is confirmed.

A 100-kilometre event on the Costa del Sol

The Marbella T100 is part of an international circuit that brings triathlon events to cities around the world and puts age-group participants on the same course as the professional race. Its name refers to the total distance of 100 kilometres, split across swimming, cycling and running. It is neither an Olympic-distance race nor a conventional Ironman 70.3: the three legs add up to a distinctive format, with 2 kilometres of swimming, 80 on the bike and 18 on foot.

The 2027 edition is scheduled for September 18-19. Available information presents those dates as the event weekend, but does not say which day age-group athletes will race or how activities and professional races will be distributed. It is therefore unwise to infer a schedule from earlier editions or other events on the circuit: detailed timings have not yet been published.

The event combines competition, activities for participants and a multisport festival atmosphere. Organisers have announced a T100 gift pack, age-group awards and partner offers, along with the chance to watch professional athletes up close. Those are additional attractions; the sporting challenge itself centres on a route that leaves the coast for mountainous roads inland before returning to the shoreline.

What is known about the course

The swim covers 2 kilometres in the sea off Marbella’s beaches. Organisers estimate an average water temperature of 23-24 degrees Celsius, a useful indication of typical conditions but no guarantee of the weather on race day. The referenced information also does not include the exact route, lap count or rules on wetsuit use.

After the transition, the 80-kilometre bike leg follows roads described as mountainous and climbing inland. According to the available course description, this is the section with the greatest topographical challenge. Confirmed information is not available on total elevation gain, specific gradients, lap count or exact turning points. The description of a demanding course is a guide, but it is not a substitute for an elevation profile or official map.

The final 18 kilometres will be at sea level and gently undulating, according to organisers. The run brings triathletes back to the coast and leads to a finish designed for spectators and participants. The stated average air temperature is 24-27 degrees; heat may affect effort in September, although actual conditions will depend on the weather that day.

A distance outside the usual benchmarks

The 2-80-18 combination does not match the Olympic distance, which typically totals 1.5 kilometres of swimming, 40 kilometres of cycling and 10 kilometres of running, or the Ironman 70.3 format, which includes 1.9, 90 and 21.1 kilometres. The Marbella event sits between familiar reference points but has its own identity. The 80-kilometre bike leg and 18-kilometre run require a different approach to pacing than a shorter race.

The challenge is not measured by distance alone. An open-water start requires athletes to navigate among other swimmers and adapt to waves; the bike adds a climb inland, and the run comes after several hours of exercise. The experience varies with each athlete’s level, pace and preparation. The 100-kilometre figure describes the format, but by itself does not capture the course’s difficulty.

Organisers present the distance as a goal for those seeking a substantial challenge and as another setting for experienced triathletes. That broad appeal does not mean it is suitable for anyone without specific preparation. Open-water swimming, a hilly bike course and the final run make experience in each discipline and gradual training key parts of the challenge.

Age-group racing and the Spanish championship

The age-group race is planned on the same course as the main event, allowing amateur participants to ride the route used by the elite. That shared setting is one of the T100 format’s defining features: the weekend is not limited to a professional race but brings together different categories and activities. Organisers have also announced age-group awards.

The event will also host the Spanish Age-Group National Championships over this distance. According to published information, athletes must be members of the Spanish Triathlon Federation and hold a Spanish passport to qualify for that championship. These are requirements for the national title, not general conditions for entering the open event; championship eligibility and ordinary race registration are separate matters.

The top 10 finishers in each age group will earn a place at the 2027 T100 World Championship Final in Qatar, according to the information provided for the event. Qualification depends on an athlete’s result in the relevant category. Available details do not explain tie-break procedures, how places will be accepted or the exact categories, so those points will need confirmation in the competition rules when they are published.

Registration, priority access and entry fees

The official event page invites athletes to request priority access for the 2027 edition. Full registration is still pending in the information reviewed, so it is not yet possible to confirm when entries will open, how many places will be available or what they will cost. No verified entry fee appears in the available information, and quoting a price would be speculative.

The interest form is a way to receive updates or access the process earlier; it should not be mistaken for a completed registration or a guaranteed place. Before paying, athletes will need to review the conditions published by organisers, including fees, dates, change policies, required documents and any differences between the open race and the national championship. Price tiers or staggered entry windows also remain unconfirmed.

The reference information says T100 entries are eligible for a 50% refund up to 90 days before race day and a 25% refund up to 30 days before, subject to the relevant official policy. Those terms may help athletes assess the risk of booking early, but they do not replace checking the rules that apply to this edition. The specific policy should be verified during official registration, particularly if organisers publish exceptions or changes.

Dates, schedules and details still to come

The event is announced for September 18-19, 2027. Information reviewed identifies September 18 as the professional race day, but does not clearly establish which day each age-group event will take place. No start times or detailed weekend programme are available either. Until a schedule is released, the day and time for each race or category cannot be set precisely.

The final map, transition locations, elevation profile, cut-off times and equipment rules are also pending. For the swim, wetsuit rules have not been confirmed; the bike route’s laps and elevation are not specified; and the general run description is not a complete course map. These details affect logistics and preparation, so it makes sense to wait for official documents before planning travel or race-day arrangements.

The organiser’s page places the event in Marbella but does not provide a specific start or finish address. It does not confirm a recommended airport, partner accommodation or road closures either. The city is in Málaga province, Andalusia, but that geographical reference alone does not identify the transition areas. The precise locations should be clear in the map and athlete guide.

Climate and terrain are part of the challenge

The reported averages — 23-24 degrees in the water and 24-27 in the air — suggest a potentially warm event in mid-September. These are indicative averages, not a forecast for a future date. Sun exposure, humidity, wind and start time can change how the temperature feels throughout the day. Over an event lasting several hours, those variations may affect pace and perceived effort.

The contrast in terrain also sets the course apart. The swim and run take place by the sea, while the bike heads inland on roads climbing toward the mountains. No elevation figure has been published to compare the route with other races, so the description of a hilly bike course is an initial guide rather than a complete measure of difficulty. The cycling profile will be crucial to understanding the course’s character.

Returning to sea level for the run brings another change in rhythm: after the climb and prolonged effort on the bike, the terrain is described as gently rolling rather than completely flat. That combination may make the final run feel different from what an 18-kilometre distance suggests. Without an official map and elevation data, any strategy based on specific times or gradients would be premature.

A race weekend designed for spectators too

Organisers present the event as a multisport festival, with professional races, amateur participation and activities around the competition. The gift pack, age-group awards and partner offers are part of that proposition. For friends and family, the chance to watch professionals may be another attraction, although the programme and spectator areas have not yet been detailed in the available information.

The T100 circuit aims to give age-group athletes a shared setting with elite competitors. That proximity can create a distinctive atmosphere over the weekend, with busy transition zones, spectators lining the course and different paces on the same route. Practical details such as access, viewing times and designated spectator areas will depend on local planning and should be confirmed in the event guide.

Marbella adds a landscape where the coast meets the inland hills, but the sporting value of the event depends on more than its setting. A triathlon requires careful coordination of travel, equipment and timing, particularly when the event spans two days. Operational information will matter as much as the scenic course description for athletes and supporters travelling to the city.

What is confirmed and what remains uncertain

For now, the confirmed details are the September 18-19, 2027 weekend, the Marbella location and the 100-kilometre format: 2 kilometres of swimming, 80 of cycling and 18 of running. The bike’s mountainous character, the gently rolling run, estimated average temperatures and the Spanish age-group championship are also described. These details establish the event’s broad outline.

Entry fees, full registration opening, schedules, the map, lap counts, total elevation, wetsuit rules and cut-off times are not included in the reference information. The priority-access request is the announced way to receive updates, but it does not resolve those unanswered questions. Before making non-refundable bookings or finalising a training plan, athletes should rely on updated official documentation.

The Marbella T100 is shaping up as a long-distance race that combines the sea, mountain roads and a return to the coast, with a world-championship qualification opportunity for the top finishers in each age group and a national championship incorporated into the event. Its broad outline is set; finer details are still to come. The release of the route and competition rules will turn anticipation into a full picture of the challenge.