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IRONMAN 70.3 Rio de Janeiro: 2027 race guide

Rio de Janeiro, Brazil8 August 2027

Start trainingOfficial entry & details

IRONMAN 70.3 Rio de Janeiro is August 8, 2027. Check the organizer date, course-specific preparation and practical race-day planning.

Updated and verified Oct 14, 2026

The race at a glance

Route and elevation

IRONMAN 70.3 Rio de Janeiro’s course preview starts with a one-lap Copacabana ocean swim, uses a two-lap bike route toward Novo Rio, and finishes after three run laps around Aterro do Flamengo near Marina da Glória.

  • The official race date is August 8, 2027.
  • The swim preview is one 1.9 km lap at Copacabana.
  • The bike’s 45 km junction separates another lap from the route toward transition.

Race guide

Copacabana swim to the Marina da Glória finish

The organizer confirms August 8, 2027. Its course preview places the swim at Copacabana and the finish at Marina da Glória, so a beachfront hotel near the swim will not automatically solve post-race travel. Plan the two journeys separately and confirm the event’s transition-bag and transfer arrangements.

The bike heads through Botafogo and Flamengo, past Santos Dumont Airport and through the Marcello Alencar Tunnel toward Novo Rio. The organizer specifically warns about the 45 km decision between starting the second lap and finishing the bike. Study that junction on the final map and track your own laps.

The run uses three circuits around Aterro do Flamengo. Repeated loops make it possible to recognise aid and spectator locations, but the finish split still requires attention. Practise holding a sustainable effort after the bike and keep fueling reminders tied to elapsed time rather than assuming every lap takes the same time.

The source also retains a 2026 promotional heading even though its current date is 2027. Use the dated 2027 athlete guide for the final route, check-in, cutoff and aid details. Ocean conditions at Copacabana and the race-week weather should guide equipment and pacing; historical temperature summaries do not guarantee conditions on the day.

Confirmed race date

IRONMAN 70.3 Rio de Janeiro: August 8, 2027. Verified on October 14, 2026 against the official event information.

Current race profile

DetailRace information
LocationRio de Janeiro, RJ, Brazil
Published distance profileSwim, Bike, Run
Surfacemixed

The organizer remains authoritative if the course, distance program, venue, registration or schedule changes. Historical conditions are not a forecast; use current organizer advisories and the race-week forecast.

Training calendar anchors

These dates are calendar arithmetic, not proof that a plan length is appropriate.

RunwayCalendar start
12 weeksMay 16, 2027
16 weeksApril 18, 2027
20 weeksMarch 21, 2027
24 weeksFebruary 21, 2027

Use the training start-date calculator for another runway and compare the IRONMAN 70.3 training hub. Do not compress missed weeks to force the calendar.

Training plan and timing

Compare the start dates below, then choose a plan that fits your current training and available time.

39 weeks and 5 days remain until the listed 8 August 2027 race day.

  1. Start21 February 2027
  2. Build24 weeks
  3. Taper2 weeks
  4. Race day8 August 2027

24-week plan option

Compare 3 other plan lengths
  • 12-week plan
    Start by 16 May 2027
  • 16-week plan
    Start by 18 April 2027
  • 20-week plan
    Start by 21 March 2027
Explore training plans

Need a printable plan? Download the IRONMAN 70.3 training plan PDF.

Race-day strategy

  • Keep bike effort controlled early, especially into wind or on climbs.
  • Use the bike to execute the fueling plan you rehearsed.
Open race calculators and tools
Loading 70.3 fueling planner…
IRONMAN time and split calculatorIRONMAN 70.3 fueling plannerTraining start-date calculatorIRONMAN 70.3 training plan PDF

Race-week logistics

Use the current organiser guide for schedules, transport, cutoffs, equipment, and other time-sensitive instructions.

Current details to confirm: start schedule, expo, bib pickup, transport, cutoffs, equipment rules, entry price.

Registration

Check official registration

Start logistics

Confirm the exact distance day, start time and venue in the current participant guide.

Confirm waves, check-in, transport and access after the organizer publishes current instructions.

Adaptive AI coach for iPhone

Your race deserves more than a static plan.

Your adaptive AI coach builds around this finish line, follows the training you complete, and adjusts upcoming work around recovery, travel, missed sessions, and race week.

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FAQs

When is this race?

The organizer lists August 8, 2027 for this event. Recheck the final participant guide for the represented distance’s start and travel details.

Is the race date official?

Yes. The date was matched to this named race. Registration, course, wave and race-week details can still change independently.

When should training start for this race?

Count back only after the opening weeks fit current readiness. Do not compress missed training to force the event date.

What should athletes recheck before this race?

Recheck the represented distance, registration, participant guide, start, course, cutoff, aid, transport and race-week weather.

What changes preparation for this race?

IRONMAN 70.3 Rio de Janeiro’s course preview starts with a one-lap Copacabana ocean swim, uses a two-lap bike route toward Novo Rio, and finishes after three run laps around Aterro do Flamengo near Marina da Glória.

Keep going

Training Start Date Calculator: Count Back From Race Day

Enter a race date and plan length, see the start date, then check whether the opening week matches your current training readiness.

Open guide

IRONMAN 70.3 Training Plans: 16–26 Weeks

Choose a 16–26 week IRONMAN 70.3 plan using swim, bike, run, brick, fueling, recovery and schedule readiness checks.

Open guide

Ironman Training Plan PDF: Readiness Gates & Rehearsal Map

Download the Ironman training-plan PDF, then use readiness gates and rehearsal decisions to test whether its opening weeks fit.

Open guide

Sources