IRONMAN San Juan
San Juan, Argentina · November · IRONMAN
Why people love it
- First full-distance IRONMAN in San Juan, set against the Andean foothills
- Calm, mirror-like reservoir swim at the 3.8 km (2.4 mi) Punta Negra dam
- Single-lap 180.2 km (112 mi) bike through valleys, vineyards and desert-mountain terrain
- Three-loop downtown run finishing at Plaza del Bicentenario
- Kona 2027 slots on offer
Watch out for
- Inaugural event (1 November 2026): 226 km (140 mi) logistics are untested
- Heat (past highs to 39 °C (102 °F) / 102 °F) and Zonda-season wind, though the air is dry
- Rolling bike, roughly 1,100-1,300 m (3,600-4,300 ft) of climbing estimated from the 70.3
- Split venues: swim at the dam roughly 35 km (22 mi) from downtown, finish in the city
Race
How racers feel about it, how well it is run, and how it treats a first timer. Counts for 27% of the overall score.
- Racer satisfactionLiked3.4
No full-distance athlete reports exist yet. The 2026 70.3 on the same roads drew 1,200 competitors and positive local coverage. · Low confidence
- OrganizationAdequate3.2
This is the first full-distance edition (1 November 2026). The same organiser ran a sold-out 70.3, but 226 km (140 mi) logistics across split venues are untested. · Low confidence
- First timer friendlyDemanding2.4
A rolling desert bike, dry heat (past 1 November highs 21-39 °C (70–102 °F) / 70-102 °F), wind, remote travel and a first-year event. · Low confidence
Course traits, not part of the score
- PR potentialAverage2.9
The bike rolls (roughly 1,100-1,300 m (3,610–4,270 ft) / 3,600-4,300 ft, estimated from the 70.3) and the run is flat, but wind and heat are likely. · Low confidence
- Course easeTough2.6
A rolling desert bike with wind and heat up to 39 °C (102 °F), though the air is dry and the run is mostly flat. · Low confidence
Swim
Wetsuit odds, water temperature, calm, and the experience of the start. Counts for 15% of the overall score.
- Wetsuit legalUsually4.4
Listed reservoir water averages 21 °C (70 °F), unmeasured. Early November is likely 17-22 °C (63-72 °F), under the 24.5 °C (76.1 °F) limit. · Low confidence
- Water temperatureComfortable4.2
The 21 °C (70 °F) listing average is comfortable, but snowmelt-fed water could be cooler in early November. · Low confidence
- Calm waterMostly calm4.2
The reservoir was mirror-like at dawn at the 2026 70.3 (6:30 start). Afternoon wind and Zonda exposure keep it just short of glassy. · Low confidence
- Swim easeEasy3.9
A calm dam with a simple buoy line (the 70.3 was out-and-back). The full 3.8 km (2.4 mi) layout and start format are unconfirmed. · Low confidence
- Swim experienceGreat3.8
A scenic dam with Cerro Blanco views. We found no athlete reports on clarity or start format. · Low confidence
Bike
Road surface, closures, scenery and wind. Counts for 19% of the overall score.
- Road surfaceMixed3.2
We found no surface reports. The route uses provincial and national roads (Ruta 12, 38, 60, 40). · Low confidence
- Road closuresMostly closed3.6
A large provincial-supported event on provincial and national routes. Closure quality is unreported. · Low confidence
- Bike sceneryBeautiful4.0
Vineyards, valleys, reservoirs and Andean foothills, according to the organiser. · Low confidence
- WindWindy2.4
The official guide says the windy character is part of the race, and Zonda wind season is around November. We found no race-day wind data. · Low confidence
Course traits, not part of the score
- Bike speedAverage2.9
One lap of 180.2 km (112 mi) with flat stretches and some challenging hills, plus wind and heat. Descents near the Ullum dam help. · Low confidence
- Bike flatnessRolling3.3
The 70.3 lists about 562 m (1,844 ft) of climbing, implying roughly 1,100-1,300 m (3,600-4,300 ft) for the full, so rolling to hilly. · Low confidence
- Bike simplicitySome technical parts3.3
The 70.3 route includes a descent along the Ullum dam. We found no evidence of highly technical sections. · Low confidence
Run
Crowds, aid stations, conditions underfoot and scenery. Counts for 13% of the overall score.
- Crowd supportDecent3.4
Locals cheered at the dam and downtown finish at the 70.3, and the three-loop city run gives repeat passes. Crowds for the full are untested. · Low confidence
- Aid stationsGood3.5
Expect standard IRONMAN aid. There are no reports yet, but three downtown loops make aid logistics straightforward. · Low confidence
- Run sceneryPleasant3.0
Urban downtown loops finishing at Plaza del Bicentenario. Pleasant but not scenic. · Low confidence
- Run conditionsModerate2.8
Dry heat (November highs average 31.6 °C (89 °F) / 89 °F, up to 39 °C (102 °F) / 102 °F) is eased by low humidity and tree-lined avenues. · Low confidence
Course traits, not part of the score
- Run flatnessMostly flat4.4
Three mostly flat urban loops. One listing also shows a conflicting 21.1 km (13.1 mi) distance. · Low confidence
Conditions
Air temperature, how predictable the weather is, setting, and spectating. Counts for 15% of the overall score.
- Air temperatureHarsh2.4
Past 1 November highs ran 21-39 °C (70-102 °F), with 14 °C (57 °F) mornings. The air is dry, about 38% humidity, which eases it. · Medium confidence
- Weather reliabilityReliable3.7
A dry desert climate with about 79% sunshine. The main risk is Zonda wind and big day-to-day temperature swings, not storms. · Low confidence
- Venue beautyLovely3.9
Andean foothills, reservoirs and vineyards per the announcement. Scenery photos look promising but we found no athlete verdicts. · Low confidence
- Spectator friendlySome viewpoints3.0
The run and finish are downtown, but the swim dam and bike venues are remote from the city. · Low confidence
Course traits, not part of the score
- Low altitudeModerate3.2
The city is at about 640 m (2,100 ft), and the Punta Negra reservoir in the foothills is almost certainly higher, though unconfirmed. · Low confidence
Stay and travel
Hotels, walkability, getting there, and the town around the race. Counts for 11% of the overall score.
- Hotel availabilityGood3.8
The provincial capital hosted a sold-out 70.3 of about 1,200 athletes. Lodging is likely adequate, though we found no data. · Low confidence
- Hotel valueGood4.0
Argentine pricing is generally favourable to visitors. We found no race-week rate data. · Low confidence
- WalkabilitySome driving2.5
The swim at the Punta Negra dam is roughly 35 km (22 mi) outside the city, so you need transport. Run and finish are downtown. · Low confidence
- Travel easeAwkward2.0
San Juan is in far-west Argentina. San Juan airport (UAQ) has limited flights, and Mendoza (MDZ), about 170 km (106 mi) away, is the alternative. · Low confidence
- LogisticsFiddly2.4
The swim and bike start at the dam while the run and finish are in the city, so expect split transitions and shuttles. · Low confidence
- Town and foodGood3.6
A provincial capital with downtown dining and a wine-region setting. · Low confidence
Key facts
- Location
- San Juan, San Juan Province, Argentina
- Typical month
- November
- Latest or next date
- 1 November 2026
- Organiser
- IRONMAN
- First held
- 2026
- Distances
- 3.8 km (2.4 mi) swim, 180 km (112 mi) bike, 42.2 km (26.2 mi) run
- Swim venue
- Dique Punta Negra (Punta Negra dam/reservoir) (reservoir)
- Water temperature
- 21 °C (70 °F)
- Bike laps
- 1
- Run laps
- 3
- Air temperature
- 14–32 °C (57–90 °F)
- Humidity
- Dry (about 38% in November)
- Altitude
- 640 m (2,100 ft)
- Nearest airport
- San Juan Domingo F. Sarmiento (UAQ)
- Where to stay
- Downtown San Juan
- Booking
- Accommodation listed 31 Oct-2 Nov 2026; Mendoza (MDZ) is the alternative gateway.
What racers and reviewers say
- Endurance Sportswire: San Juan to host first full-distance IRONMANarticle · Positive
Official announcement: 3.8 km (2.4 mi) swim in the calm Punta Negra dam, one-lap 180.2 km (112 mi) bike with flat stretches and challenging hills, run downtown finishing at Plaza del Bicentenario, Kona 2027 slots. Pre-race, not an athlete review.
- Slowtwitch: Guide to new 2026 IRONMAN racesarticle · Positive
Calendar guide calling San Juan the only new Latin American race with open spots, with a river/reservoir swim, bike toward the mountains and a city run. Pre-race.
- RaceRaves: IRONMAN San Juanaggregator · Positive
Listing: reservoir swim, hilly bike, flat run, typical high 26 °C (79 °F) and low 14 °C (57 °F), average water 21 °C (70 °F), historical 1 Nov highs from 21 °C (70 °F) to 39 °C (102 °F). No athlete reviews yet.
- WeRun.world: IRONMAN San Juan 2026aggregator · Positive
Event listing: 6:30 start, hilly desert/mountain bike, urban three-loop run (listing also shows a conflicting 21 km (13 mi) / 13.1 mi run figure), accommodation listed 31 Oct-2 Nov.
- Diario de Cuyo: IRONMAN regresa a San Juan, tres carrerasarticle · Positive
Local news preview that San Juan hosts its first-ever IRONMAN on 1 Nov 2026 with a 3.8 km (2.4 mi) Punta Negra swim, 180 km (112 mi) bike and 42.2 km (26.2 mi) run.
Show 3 more
- Diario de Cuyo: IRONMAN 70.3 San Juan 2026 circuitsRaced 2026 · article · Positive
70.3 course description at the same venue: out-and-back swim along buoy line, bike through Ullum with a descent along the dam, run in city centre to Plaza del Bicentenario; event guide notes windy character.
- Diario de Cuyo: 70.3 postales inolvidables (2026)Raced 2026 · article · Positive
Report on the 2026 70.3 with 1,200 competitors: mirror-like dam at dawn, favourable weather, locals cheering at the dam and downtown finish.
- Tiempo de San Juan: El Ironman vuelve a San Juanarticle · Positive
Local announcement of the 70.3 and full distances with courses passing the dams and city centre; basic distances only.
Sources
Pages we used for facts and ratings. See how we rate.
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