T100 French Riviera, in Saint-Raphaël and Fréjus, is the race that put France on Verus's map — but it sits inside a much older and wider multisport story. This corner of the Mediterranean coast is where long-course triathlon was effectively invented as a spectator sport, and the racing, clubs and open-water swimming culture here go well beyond any single event.
Nice: the birthplace of long-course triathlon
The Nice Triathlon was first run in November 1982 — a 1.5km swim, 100km bike and 42.2km run (distances that grew the following year to roughly 3km/120km/32km). American Mark Allen won that first edition and went on to win ten consecutive titles before the race was rebranded IRONMAN France in 2005. Nice went on to host the IRONMAN 70.3 World Championship in 2019, its first time hosting an IRONMAN world championship in France.
That history is still live, not just archival. IRONMAN 70.3 World Championship racing returns to Nice on 12-13 September 2026 (women's race Saturday, men's Sunday) — a genuinely major fixture, with a professional field of 140+ athletes and a $500,000 total pro prize purse, sitting alongside qualified age-group athletes from around the world.
But the June 2026 general race didn't happen
IRONMAN Nice's full-distance and general-public 70.3 races, both scheduled for 28 June 2026, were cancelled outright over an orange heat-wave alert and temperatures reaching 40°C — organisers and the City of Nice couldn't agree a rescheduled 2026 date. The race returns on 12 September 2027, deliberately moved out of June. See Verus's own conditions guide for what that heat wave means for the region's climate reputation more broadly — the short version is that it's a real, if occasional, risk rather than a yearly certainty.
T100 French Riviera, and the region's deeper training pedigree
Saint-Raphaël and Fréjus, roughly 40km along the coast from Nice, host T100 French Riviera — Verus's dedicated guide to that race covers its course, transition and logistics in full, so it isn't repeated here. Worth knowing beyond the race itself: the Estérel Côte d'Azur area has hosted French national triathlon team training camps every year since 1990, according to the PTO's own launch media release, and French professional triathlete Léo Bergère trains locally in Saint-Raphaël — this is genuine, long-standing training-ground territory, not a one-off event bolted onto a tourist coastline.
Triathlon clubs across the Riviera
The region has a real, named club scene beyond the two headline races. Precise membership numbers and training schedules move often enough that they're worth checking directly with each club, but the clubs themselves are well documented and currently active:
- Nice Triathlon Club — founded 1 December 1987 per the City of Nice's own sports portal, one of the region's oldest, running its own training groups and organising an annual Aquathlon of Nice with the city's support.
- Antibes Triathlon — based in Antibes, organiser of the Triathlon et Duathlon de la Saint-Sylvestre (see below).
- US Cagnes Triathlon — based in Cagnes-sur-Mer, on the coast between Nice and Antibes.
- Stade Laurentin Triathlon — based in Saint-Laurent-du-Var.
- Étoile Sportive de Villeneuve-Loubet Triathlon — based in Villeneuve-Loubet.
All five towns above sit directly on the Marathon des Alpes-Maritimes Nice-Cannes route (see Verus's guide to where to run on the French Riviera) — the same short stretch of coast carries both the region's biggest running race and most of its triathlon club scene.
Open-water swimming: organised sessions and a real race calendar
Beyond training solo off any of the coast's beaches, the Riviera has a genuinely organised open-water swim scene:
- PROM'SWIM — Nice's own open-water swim race, based at Ponchettes Beach on the Promenade des Anglais. The 2026 edition (19-20 September) offers a 4x500m relay on the Saturday and, on Sunday, individual distances from a 500m kids' race up to a 10km out-and-back between Ponchettes and Carras beaches in the Baie des Anges.
- Swim the Riviera — coached open-water swim tours run by Loïc Branda, a former French Open Water swimming champion who also heads the open-water section at Olympique Nice Natation, covering technical open-water swimming (including the region's four capes: Cap Martin, Cap d'Ail, Cap Ferrat and Cap d'Antibes).
- Swimrun The Riviera — a swimrun-format event (alternating open-water swim and trail-run legs) on the same stretch of coast, for anyone who wants the region's water and terrain combined into one race rather than a standard triathlon split.
The racing calendar runs later into the year than you'd expect
The most useful thing this section can do is correct an assumption: Riviera triathlon isn't only a summer sport. The Triathlon et Duathlon de la Saint-Sylvestre, organised by Antibes Triathlon, runs a Sprint-distance triathlon (750m swim / 18km bike / 5km run) in mid-December every year — the 2026 edition falls on 13 December. That's a genuine, standing race deep into what most people would assume is the off-season, made possible by exactly the mild-winter climate covered in Verus's conditions guide for this region.
Wetsuits: the same rule, a genuinely wide range of answers
World Triathlon's standard banding applies across every race on this coast: wetsuits mandatory below 15.9°C, forbidden at or above 24.6°C. What changes month to month is which side of that line the Côte d'Azur actually sits on — see the full monthly sea-temperature table in Verus's conditions guide for this region. The practical range: winter racing (like the Saint-Sylvestre) is solidly wetsuit-mandatory territory; a September race like T100 French Riviera's professional weekend sits right around the optional band; a height-of-summer swim can be forbidden outright.