IRONMAN 70.3 Nice
Nice, France · September · IRONMAN
Why people love it
- Mediterranean swim off the Promenade des Anglais, 1.9 km (1.2 mi)
- Scenic Col de Vence climb, 9.7 km (6 mi) at about 6.6%, past hilltop villages
- Flat promenade run gives spectators repeated views
- Hosted the 70.3 World Championship in 2019 and 2026
- Airport about 7 km (4 mi) away and plenty of lodging and restaurants
Watch out for
- About 1,250 m (4,100 ft) of climbing, nearly all in the first 44 km (27 mi)
- Technical 11 km (6.8 mi) descent with crashes and lost bottles reported
- Shadeless run; heat cancelled the June 2026 race and shortened 2019
- Pebble-beach swim exit, no showers; wetsuits rarely legal at 24 °C (75 °F)
- Long, narrow transition; 2026 used a split layout
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 satisfactionLoved4.1
Athletes at the 2019 and 2023 championships praised the crowds, setting and world-championship feel. Heat cancelled the June 2026 edition. · Medium confidence
- OrganizationWell run3.6
Good volunteers, but a long narrow transition, too few portaloos in 2023, a heat-shortened 2019 race and a prefecture cancellation in June 2026. · Low confidence
- First timer friendlyDemanding2.1
About 1,250 m (4,100 ft) of climbing, a technical descent with crashes and a non-wetsuit sea swim make it hard for a first 70.3. · Medium confidence
Course traits, not part of the score
- PR potentialSlow1.9
2019 winners ran 20-30 minutes slower than on flat Worlds courses. The Col de Vence climb and technical descent make this a slow course. · Medium confidence
- Course easeVery tough1.8
Hilly bike with 1,250 m (4,100 ft) of climbing, a technical descent and a shadeless run in warm weather. · Medium confidence
Swim
Wetsuit odds, water temperature, calm, and the experience of the start. Counts for 15% of the overall score.
- Wetsuit legalSeldom1.9
Water averages about 24 °C (75 °F) and both Worlds age-group swims were without wetsuits. · Medium confidence
- Water temperatureComfortable3.5
Around 24 °C (75 °F) is comfortable without a suit for most athletes, though it is salty. · Low confidence
- Calm waterMostly calm3.8
Sheltered Baie des Anges with little chop in 2023, though one 2019 athlete reported swell. · Low confidence
- Swim easeEasy4.0
Single non-technical loop with an easy-to-draft M shape. No showers and a pebble exit. · Medium confidence
- Swim experienceGreat3.9
Mediterranean swim below the city and easy drafting, but a pebble beach exit and salty water. · Low confidence
Bike
Road surface, closures, scenery and wind. Counts for 19% of the overall score.
- Road surfaceMixed3.0
Speed bumps and narrow twisting descents were reported in 2023. Little else is known about the surface. · Low confidence
- Road closuresMostly closed3.9
Championship editions had closed roads, but readers said the narrow early climb congested the race. · Low confidence
- Bike scenerySpectacular4.6
Hilltop villages, the Col de Vence and mountain views over the Côte d'Azur. · Medium confidence
- WindSome wind3.4
Coastal wind can change, but athletes reported little trouble with it. · Low confidence
Course traits, not part of the score
- Bike speedSlow2.0
About 35 km (22 mi) of near-continuous climbing, then a technical descent. The flat last 46 km (29 mi) only partly makes up for it. · Medium confidence
- Bike flatnessMountainous1.3
About 1,250 m (4,100 ft) over 90 km (56 mi). Sources range from 1,190 to 1,367 m (3,900 to 4,500 ft). · High confidence
- Bike simplicityTechnical1.7
Hairpins at km 47-49 (mi 29-30) and an 11 km (6.8 mi) descent. Crashes and lost bottles were reported at the 2023 and 2026 events. · Medium confidence
Run
Crowds, aid stations, conditions underfoot and scenery. Counts for 13% of the overall score.
- Crowd supportElectric4.5
The compact out-and-back run lets spectators see athletes repeatedly. Pros and age-groupers credited the crowds. · Medium confidence
- Aid stationsGood4.1
Aid about every 1.8 km (1.1 mi) and excellent volunteers reported in 2023. · Low confidence
- Run sceneryBeautiful3.9
Seafront promenade, but a repetitive out-and-back. · Medium confidence
- Run conditionsHard2.4
No shade on the promenade. The hot 2019 run was the hardest part of the day, even with September highs of 24-26 °C (75-79 °F). · Medium confidence
Course traits, not part of the score
- Run flatnessFlat4.8
Flat promenade out-and-back, 21.1 km (13.1 mi). · High confidence
Conditions
Air temperature, how predictable the weather is, setting, and spectating. Counts for 15% of the overall score.
- Air temperatureWarm or cool3.4
September highs of 24-26 °C (75-79 °F) are fine but humid. June editions reached 31 °C (88 °F) or more. · Medium confidence
- Weather reliabilityVariable2.8
The 2019 race was shortened for heat and the 28 June 2026 race cancelled. Sea swell is possible. · Medium confidence
- Venue beautyStunning4.8
Baie des Anges, the Promenade des Anglais and the Côte d'Azur hills. · High confidence
- Spectator friendlyEasy3.8
The run loops give repeated viewing, but the bike is remote and 2026 used a split transition. · Medium confidence
Course traits, not part of the score
- Low altitudeSea level4.5
Swim and run are at about 5 m (16 ft). The bike briefly tops 1,000 m (3,300 ft) near km 45 (mi 28). · Low confidence
Stay and travel
Hotels, walkability, getting there, and the town around the race. Counts for 11% of the overall score.
- Hotel availabilityGood3.9
Plenty of rooms and apartments, many with no minimum stay, though Worlds weeks are busier. · Low confidence
- Hotel valueNormal2.8
No direct price data, but this is a Riviera city during a championship week. · Low confidence
- WalkabilityWalkable3.5
Apartments near the Ironman Village made race morning easy, but transition is long and 2026 T2 sat away from the swim start. · Low confidence
- Travel easeVery easy4.7
Nice airport is about 7 km (4 mi) away, and there is a direct train from Paris in about 6 hours. · Medium confidence
- LogisticsSome complexity3.2
One swim and bike area, but a long narrow transition and a split layout in 2026. · Low confidence
- Town and foodGreat4.7
Restaurants, terraces and museums, with Monaco nearby. · Medium confidence
Key facts
- Location
- Nice, Alpes-Maritimes, Provence-Alpes-Cote d'Azur, France
- Typical month
- September
- Latest or next date
- 12 September 2027
- Organiser
- IRONMAN
- Distances
- 1.9 km (1.2 mi) swim, 90 km (56 mi) bike, 21.1 km (13.1 mi) run
- Swim venue
- Baie des Anges, off the Promenade des Anglais (Plage des Ponchettes start) (sea)
- Water temperature
- 23–25 °C (73–77 °F)
- Wetsuit
- Rarely legal (age-group swims at both Worlds were in skins)
- Swim start
- in-water start at the 2019 and 2026 World Championships; regular-edition format not confirmed
- Swim laps
- 1
- Bike climbing
- 1,250 m (4,100 ft)
- Bike laps
- 1
- Key climbs
- St-Laurent-du-Var ramp near km 10 (6 mi), grades near 13%; Col de Vence, 9.7 km (6 mi) at about 6.6% from km 26.6 (mi 16.5); Technical 11 km (6.8 mi) descent from about km 64 (mi 40)
- Run laps
- 2
- Run shade
- almost none on the Promenade des Anglais
- Air temperature
- 16–26 °C (61–79 °F)
- Humidity
- humid coastal
- Altitude
- 5 m (16 ft)
- Nearest airport
- Nice Cote d'Azur (NCE), 7 km (4 mi) away
- Where to stay
- Promenade des Anglais, Old Town (Vieux Nice), near the Ironman Village
- Booking
- Lodging plentiful with many places offering no minimum stay (Kasprzak 2023); a 2026 Worlds poster described a complicated French Airbnb. Many athletes rent apartments near the Ironman Village. Airport distance approximate general knowledge.
What racers and reviewers say
- SlowtwitchRaced 2023 · article · Positive
Age-grouper writing about the 2023 Nice world championship (full distance, same swim and run venue; bike course differs from the 70.3). Found the swim M-shaped, salty and without showers, the descents narrow and unpleasant with several crashes, the run crowds great and lodging plentiful. Felt it delivered a true world-championship experience.
“Transition was very narrow and very long.”
- Playtri blogRaced 2023 · blog · Positive
2023 championship report (full distance; swim and run venue shared with the 70.3). Easy-to-draft non-wetsuit M swim with little chop, scenic hilly bike with lost bottles and crashes on the descent, repetitive out-and-back run with strong crowds. Apartment near the village made race morning easy; too few portaloos.
- City of Lancaster Triathlon Club blogRaced 2019 · blog · Positive
2019 70.3 World Championship report. Swim was in skins; bike had a flat opening, a roughly 1,400 m (4,600 ft) climb to the Col de Vence, a technical descent and crashed riders; the unshaded promenade run in very hot weather was the hardest part, lifted by crowds and supporters.
“like nothing I had experienced before”
- TriathleteRaced 2026 · article · Mixed
Preview of the 2026 Worlds: sheltered single-loop swim, about 35 km (22 mi) of near-continuous climbing to a high point just over 1,000 m (3,300 ft), about 1,247 m (4,090 ft) total, then a long technical descent and a flat two-loop promenade run. Notes 2019 winners were 20-30 minutes slower than on flat Worlds courses.
- SlowtwitchRaced 2026 · article · Positive
Photo report on the 2026 men's Worlds: non-wetsuit swim, racing began on the Col de Vence, the descent was technical and fast and ended one rider's race, and rising temperatures made cooling a challenge on the multi-lap run.
Show 6 more
- SlowtwitchRaced 2026 · article · Positive
Pro recollections from the 2026 Worlds: a swim that sorted the field, large time gaps on the Vence climb, riders enjoying the descent, and a run decided in the last kilometres. Reader comments felt the narrow early bike course congested the race.
“The crowds were amazing.”
- BestBikeSplitRaced 2026 · article · Mixed
Course breakdown: 57.9 mi (93 km (57.8 mi)) bike with 4,172 ft (1,272 m (4,170 ft)) gain, Col de Vence 6 mi (9.7 km (6 mi)) at 6.5%, hairpins at km 47-49 (mi 29-30), then an 11 km (6.8 mi) descent and flat finish. Mid-September highs near 77 F (25 C) with little shade; modelled 2:33 split.
- Slowtwitch forumRaced 2019 · forum · Mixed
Thread from the 2019 race weekend: an orange heat alert, very exposed promenade with no shade or breeze, and a race shortened to a 3.8 km (2.4 mi) swim, 152 km (94 mi) bike and 30 km (18.6 mi) run. Posters were divided on whether the call was right.
- SlowtwitchRaced 2026 · article · Negative
Report that IRONMAN France Nice and IRONMAN 70.3 Nice, set for 28 June 2026, were cancelled on prefecture orders after a heatwave above 40 C (104 F) in places; IRONMAN and the city were working on a replacement date.
- Slowtwitch forumRaced 2026 · forum · Mixed
Race-week thread with little first-hand course detail: one visitor called the town a total zoo, described a complicated Airbnb and a very long travel day, and a 9 pm run on the promenade.
- RaceRavesaggregator · Mixed
Race page: one 1.9 km (1.2 mi) Mediterranean loop from Plage des Ponchettes, 90 km (56 mi) hilly loop over the Col de Vence, two-loop flat run with aid about every 1.8 km (1.1 mi); average water 24 C (75 F); no ratings posted yet.
Sources
Pages we used for facts and ratings. See how we rate.
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