IRONMAN 70.3 São PauloTraining Plan & Race Guide 2026
BrazilSeptember 20, 202670.3 mi — Half Distance2 min readPublished July 13, 2026
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01·Course Characteristics
Speed and stamina in São Paulo
A flat, hyper-fast urban course along Marginal Pinheiros that demands unrelenting pedaling power on the bike and heat resilience under the midday sun on the University of São Paulo campus.
Climate
28°C
Peak air · water 22°C · late September transition
Conditions
Humid
71% humidity · highway winds · sun-exposed run
Elevation
311 m
Bike gain · flat terrain · 23 m run gain
Difficulty
4.5 / 10
Flat profile offers a fast baseline, but constant pedaling, highway headwinds, and midday heat during the run elevate the physical demand.
There's still hope!
Only 9 weeks to go — but it's not too late.
The ideal build for this course is 16 weeks, and you have 9. We'll compress the essentials into your remaining time, prioritizing the demands that matter most on this course to get you to the finish line.
A calm, completely sheltered freshwater swim inside the University of São Paulo's Olympic Rowing Lane. With absolutely no current, swells, or ocean chop, this straight-line course is ideal for finding a steady rhythm.
02
Bike
The Highway Speedway
Marginal Pinheiros Highway
DISTANCE
90 km
LOOPS
2
ELEVATION
311 m
WIND
Up to 20.3 kph
SURFACE
Smooth asphalt
A flat, multi-loop course on the widest avenue in São Paulo. While the pavement is high quality, the complete lack of downhills means you must pedal continuously without coasting, all while battling potential headwind exposure.
03
Run
The Campus Loops
University of São Paulo Campus
DISTANCE
21.1 km
LOOPS
3
ELEVATION
23 m
SHADE
Minimal
PEAK TEMP
28°C
A paved 3-loop run course through the USP campus with minimal elevation change. Although some mature trees line the path, large stretches are fully exposed to the sun as temperatures climb toward 28°C.
03·AVG beginners' Training Timeline
From zero to the finish line
16 weeks
This 16-week progression is custom-tailored to São Paulo's flat but unrelenting profile. By focusing first on building a strong aerobic foundation, you will transition into high-duration flat riding to withstand the continuous pedaling demands, followed by heat-adaptation runs to conquer the warm, humid campus loops.
Today · WK 0Race Day
WK 1–5
Aerobic Base & Muscular Strength
Build baseline aerobic volume and core muscular strength to handle non-stop pedaling.
WK 6–10
Continuous Power & Wind Prep
Develop steady-state power and aero-bar tolerance for flat, windy riding.
WK 11–14
Heat Adaption & Specific Build
Incorporate warm-weather runs and sustained-effort brick sessions.
WK 15–16
Taper & Race Execution
Reduce training volume while keeping intensity sharp to peak for race day.
Adapts to your fitness, schedule & recovery every week.
With temperatures rising up to 28°C by midday, take full advantage of aid station ice and water from the very start of the run. Keep your core temperature down by pouring water over your head and shoulders on each of the three campus loops.
Fuel & hydration
Due to 71% average humidity, aim for 600-800 ml of fluid and 500-800 mg of sodium per hour. Because the flat bike course has no downhill coasting zones, practice taking in your fuel and fluids under constant pedaling load during training.
Pacing
Do not over-torque the flat bike leg early; hold your target power strictly to save your legs from the fatigue of continuous pedaling. On the run, adjust your pace conservatively for the midday heat and save your surge for the final loop.
Gear & logistics
Choose a deep-section rear wheel to maximize speed on the flat highway, but prepare for 20.3 kph winds. Bring a full-sleeved wetsuit for the 22°C swim, and use reliable ride-sharing apps to navigate notorious local traffic to USP Gate 1 or 3.
Frequently Asked Questions
What are the water conditions and wetsuit rules for the IRONMAN 70.3 São Paulo swim?
The swim takes place in the Olympic Rowing Lane of the University of São Paulo, offering calm, fresh water with absolutely no current or ocean swells. The average water temperature is around 72°F (22°C), meaning wetsuits are typically legal for age-group athletes as the temperature usually falls below the 76.1°F (24.5°C) limit. You will enter the water via a rolling start for this straightforward, single-loop out-and-back course.
How difficult is the IRONMAN 70.3 São Paulo bike course?
The bike course is flat, fast, and highly PR-friendly, featuring only 1,021 feet (311 m) of total elevation gain over two 45 km loops. However, because there are virtually no downhills to coast, you must be prepared for constant pedaling and steady muscular endurance. Additionally, the course along Marginal Pinheiros is highly exposed to winds averaging 12.6 mph (20.3 kph), which acts as a primary challenge.
What is the run course profile like for IRONMAN 70.3 São Paulo?
The run is a flat, fast, 3-loop course on paved roads winding through the University of São Paulo (USP) campus. It features minimal elevation change with only about 77 feet (23 m) of climbing and is highly spectator-friendly. While some areas have mature trees that provide brief shade, much of the course is fully exposed to the sun as midday temperatures rise toward 82°F (28°C).
How should I plan my nutrition and hydration for the São Paulo 70.3?
With average humidity around 71% and late-morning run temperatures reaching up to 82°F (28°C), aggressive hydration and sodium replacement are vital. Because the flat bike course requires constant pedaling, you must practice taking in your nutrition and fluids under a continuous physical load. You should also plan for a higher fluid intake during the run due to the open, sun-exposed stretches of the USP campus.
Which airport should I fly into and where should I stay for IRONMAN 70.3 São Paulo?
For international flights, you should fly into São Paulo/Guarulhos International Airport (GRU), or use Congonhas Airport (CGH) for domestic connections as it is much closer to the venue. It is highly recommended to book your accommodations in the nearby neighborhoods of Butantã, Pinheiros, or Itaim Bibi. To navigate São Paulo's notorious traffic during race week, use reliable ride-sharing apps like Uber to get to the USP campus gates.
Your Personalized Plan
Stop guessing your intervals. Train for this course.
FE26 builds your plan around your Strava data, your real schedule, and the exact demands of IRONMAN 70.3 São Paulo — then adapts every week to how you actually perform.