How many carbs per hour for All Japan Triathlon Miyakojima?

At a typical finish of 12 h, the research range is 60 to 90 g an hour, as glucose and fructose, set by how trained your gut is. Enter your own finish time above for your number.

What is the weather like at All Japan Triathlon Miyakojima?

Temperatures run from about 21 to 25 °C (70 to 77 °F): Average daily low and high in Miyako Island in April (Weather Spark). Heat raises your sweat rate, so do a sweat test in similar weather.

Where are the aid stations at All Japan Triathlon Miyakojima?

The organizer had not published aid station positions when we checked. Plan to carry what you need until they do.

Triathlon

All Japan Triathlon Miyakojima fuel plan: carbs, fluid and sodium per hour.

April 25, 2027, Miyakojima, Japan. Set your finish time and the plan follows.

Distance: 168.195 km
Climbing: Not published
Typical temperature: 21 to 25 °C · 70 to 77 °F
Aid stations: Not published yet

Your plan

IRONMAN (full distance) · 12 h

Carbs an hour

75g

The research range for this race is 60 to 90 g; your gut training sets where you start. Above 60 g, use glucose and fructose, about 2:1.

Jeukendrup 2014 Viribay 2020 +4 more

Fluid an hour

To thirst

Without a sweat rate the research says drink to thirst. Do the sweat test to get a range.

NATA 2017 ACSM 2007

Sodium an hour

300 to 1,000mg

Nearer the top in the heat. A sweat sodium test gives you your own number.

Baker 2017 NATA 2017 +1 more

Leg by leg (typical splits for this distance)

Swim1 h 12 minNo fuel
Bike6 h 7 min460 g carbs
Run4 h 26 min335 g carbs

About 810 g of carbs over the race (bike and run). That is a 25 g gel every 20 minutes, or the same carbs from drink and chews.

Rehearse it in training first: the gut adapts in 2 to 4 weeks. Costa 2017

Hand it to your AI

Your AI can check these numbers against your training and adjust them. The prompt has your results filled in.

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I'm racing a IRONMAN (full distance) and expect to finish in 12 h. I haven't measured my sweat rate. Conditions look hot, and my gut is in some training for fueling. A race fuel calculator built on the research (Jeukendrup 2014, the ACSM 2016 position stand) gave me: 75 g carbs an hour (glucose and fructose, about 2:1), about 810 g in total; fluid: drink to thirst, no sweat rate yet; 300 to 1,000 mg sodium an hour. Check this against my training and how my gut has handled fueling, then build my race day plan: what to take and when, leg by leg, with real products I can buy.

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With Memory.fit, your AI would already know your sweat rate.

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The course

What to know about All Japan Triathlon Miyakojima.

In 2026 the race was a 3 km swim, a 123 km bike and a full marathon run (168.195 km in total, the 2025 race had a 35 km run). The swim is at Maehama beach and the bike is about one and a half laps of the island.

The organizer had not published aid station positions when we checked.

Race details checked November 9, 2026 from ryukyushimpo.jp, ryukyushimpo.jp, ryukyushimpo.jp, weatherspark.com. Courses and aid stations change: check the official page in race week.

Train for it

Train for All Japan Triathlon Miyakojima with your AI.

With Memory.fit, your AI reads your real training, sleep and fuel, plans your weeks toward race day and shows the plan in the app.

Build a prompt for your AI

Questions

All Japan Triathlon Miyakojima: questions.

At a typical finish of 12 h, the research range is 60 to 90 g an hour, as glucose and fructose, set by how trained your gut is. Enter your own finish time above for your number.
Temperatures run from about 21 to 25 °C (70 to 77 °F): Average daily low and high in Miyako Island in April (Weather Spark). Heat raises your sweat rate, so do a sweat test in similar weather.
The organizer had not published aid station positions when we checked. Plan to carry what you need until they do.

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Not medical advice. Memory.fit is not affiliated with All Japan Triathlon Miyakojima or its organizer.

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