Best 70.3 races in Brazil

8 rated races, ranked by an overall score built from racer reviews and race reports. How we score

70.3

8 races

1. IRONMAN 70.3 Rio de Janeiro
Rio de Janeiro, Brazil
Next race 8 Aug 2027
Overall score 3.9
Very good
#42 of 221
Moderate evidence · 7 sources
Water 21–23 °C (70–73 °F)
1. IRONMAN 70.3 Rio de Janeiro
Overall score 3.9Very goodModerate evidence · 7 sourcesTop 18%#42 of 221 overall
Rio de Janeiro, Brazil · IRONMAN · Next race 8 Aug 2027
Racers loveCopacabana beach swim at 21 to 23 °C (70 to 73 °F) with a city backdrop
Watch outOcean swell was reported rough in 2026 despite sheltered descriptions
Water
21–23 °C (70–73 °F)
Air
21–29 °C (70–84 °F)
Field
about 1,900
Best
Bike 4.3
Weakest
Race 3.7
2. IRONMAN 70.3 Florianópolis
Florianópolis (Jurerê Internacional from 2026), Brazil
Last race 18 Oct 2026
Overall score 3.8
Very good
#52 of 221
Moderate evidence · 5 sources
Water 22 °C (72 °F)
2. IRONMAN 70.3 Florianópolis
Overall score 3.8Very goodModerate evidence · 5 sourcesTop 24%#52 of 221 overall
Florianópolis (Jurerê Internacional from 2026), Brazil · IRONMAN · Last race 18 Oct 2026
Racers loveFast, nearly flat single-loop bike; the 2018 winner rode 2:03:04
Watch outThe 2026 move to Jurerê Internacional means the course is unproven
“nice and easy” vittorio, binhopires, Slowtwitch forum (2019 thread)
Water
22 °C (72 °F)
Air
15–25 °C (59–77 °F)
Field
about 1,800
Best
Conditions 4.1
Weakest
Stay and travel 3.4
3. IRONMAN 70.3 Brasilia
Brasilia, Brazil
Next race 18 Apr 2027
Overall score 3.2
Good
#134 of 221
Moderate evidence · 7 sources
3. IRONMAN 70.3 Brasilia
Overall score 3.2GoodModerate evidence · 7 sourcesBottom 40%#134 of 221 overall
Brasilia, Brazil · IRONMAN · Next race 18 Apr 2027
Racers loveSingle hub at Pontao do Lago Sul for the swim start, both transitions and the finish
Watch outAltitude about 1,000 m (3,300 ft) and dry-season sun
“The climate and wide roads contribute to an extremely competitive and fast race.” Endurance Sports Wire (IRONMAN release)
Air
18–28 °C (64–82 °F)
Field
about 1,600
Best
Bike 4.0
Weakest
Race 3.0
4. IRONMAN 70.3 São Paulo
São Paulo (USP campus, Cidade Universitária), Brazil
Next race 19 Sep 2027
Overall score 3.1
Good
#149 of 221
Thin evidence · 4 sources
Water 22 °C (72 °F)
4. IRONMAN 70.3 São Paulo
Overall score 3.1GoodThin evidence · 4 sources#149 of 221 overall
São Paulo (USP campus, Cidade Universitária), Brazil · IRONMAN · Next race 19 Sep 2027
Racers loveSwim in a purpose-built Olympic rowing lane, flat water by design
Watch outVery few first-person reports exist, so conditions are partly inferred
Water
22 °C (72 °F)
Air
14–33 °C (57–91 °F)
Field
about 1,800
Best
Swim 4.2
Weakest
Bike 2.6
5. Challenge Florianopolis (Middle Distance)
Florianopolis, Brazil
Next race 29 Nov 2026
Overall score 3.1
Good
#154 of 221
Moderate evidence · 6 sources
Water 22–25 °C (72–77 °F)
5. Challenge Florianopolis (Middle Distance)
Overall score 3.1GoodModerate evidence · 6 sourcesBottom 31%#154 of 221 overall
Florianopolis, Brazil · Challenge Family · Next race 29 Nov 2026
Racers loveWarm Atlantic swim off Jurere Internacional's beach in a single 1.9 km (1.2 mi) loop.
Watch outWetsuits are unlikely: water averages 24 °C (75 °F).
“A quiet, fast and wonderful day at Magic Island” Challenge Family 2018 race report
Water
22–25 °C (72–77 °F)
Air
21–29 °C (70–84 °F)
Field
about 1,000
Best
Conditions 3.6
Weakest
Race 3.0
6. Challenge Fortaleza
Fortaleza, Brazil
Last race 30 Aug 2026
Overall score 2.9
Good
#188 of 221
Moderate evidence · 5 sources
Water 27 °C (81 °F)
6. Challenge Fortaleza
Overall score 2.9GoodModerate evidence · 5 sourcesBottom 15%#188 of 221 overall
Fortaleza, Brazil · Challenge Family · Last race 30 Aug 2026
Racers loveFlat, personal-best-friendly bike and run per Triathlete
Watch outHeat near 30 °C (86 °F) and humidity
Water
27 °C (81 °F)
Air
30 °C (86 °F)
Best
Stay and travel 4.0
Weakest
Swim 2.1
7. IRONMAN 70.3 Curitiba-Paraná
Curitiba (swim in Araucária), Brazil
Next race 21 Mar 2027
Overall score 2.9
Good
#194 of 221
Moderate evidence · 5 sources
7. IRONMAN 70.3 Curitiba-Paraná
Overall score 2.9GoodModerate evidence · 5 sourcesBottom 13%#194 of 221 overall
Curitiba (swim in Araucária), Brazil · IRONMAN · Next race 21 Mar 2027
Racers loveBrazil's newest 70.3, with Village and finish in Parque Barigui
Watch outOnly one edition so far and almost no athlete reports
Air
16–27 °C (61–81 °F)
Field
about 1,400
Best
Stay and travel 3.6
Weakest
Race 2.6
8. IRONMAN 70.3 Sergipe
Aracaju, Brazil
Next race 29 Nov 2026
Overall score 2.4
Below par
#214 of 221
Thin evidence · 4 sources
8. IRONMAN 70.3 Sergipe
Overall score 2.4Below parThin evidence · 4 sources#214 of 221 overall
Aracaju, Brazil · IRONMAN · Next race 29 Nov 2026
Racers loveRare river swim in the Vaza-Barris, billed as the first in Brazil
Watch outHeat and humidity: November highs around 31 °C (88 °F), with afternoon storm risk
Air
24–31 °C (75–88 °F)
Best
Stay and travel 2.9
Weakest
Conditions 1.9

About these ratings

Races are ranked by an overall score out of 5, built from racer reviews and race reports, on the race itself, swim, bike, run, conditions and travel. 5 is always the better end. How we rate

70.3 course: 1.9 km (1.2 mi) swim, 90 km (56 mi) bike, 21.1 km (13.1 mi) run.

Reports on 70.3 races are scarcer, so 2 of 8 scores are thin evidence: fewer than 5 sources each (dashed score, marked provisional). Show only races with 5+ sources.

43 racer reviews and race reports.

Browse all 8 races, A to Z

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