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A wide view of the Singapore skyline featuring Marina Bay Sands and the Singapore Flyer across a body of water.
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T100 Singapore.
Your best day in Singapore.

Singapore sells you a skyline and gives you a serious heat problem. Your T100 is 2 km in the water, 80 km on the bike and 18 km on foot. The course story below follows the 2026 Marina Bay layout while the 2027 route is still taking shape.

Singapore, the city skyline at sunset.

Course
Swim 2 km · Bike 80 km · Run 18 km
Historical air
25–30°C

What could you race?

I’m Tom, the coach behind Sense Endurance Coaching. Tell me where you are now and I’ll show you what a strong day in Singapore could look like.

Let’s build your race

Let’s build your race.

Your age and race category help me estimate where that performance could place you. They don’t determine how fast I think you can race.

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The skyline is a distraction. The heat isn't.

In the Marina Bay layout, you swim in sheltered reservoir water, ride repeated circuits of the F1 precinct and run between the waterfront landmarks. It looks like a fast city race. But the real question isn't how quickly you can cover the first lap. It's how well you can keep cooling, fuelling and moving when the heat starts setting the terms.

Marina Bay reservoir, swim lap one

Find two-kilometre rhythm before chasing feet

Sheltered reservoir water can tempt you into swimming harder than the distance requires. Find breathing and a clean line early. The bike and run will have plenty of opportunities to make you work.

Settle into rhythm. Sight toward the Aussie exit.

Marina Bay reservoir, swim lap two

Keep the second kilometre under control

If there is a short exit between swim laps, use it to get your bearings and settle again. Don't turn the second kilometre into a chase because the first felt comfortable.

Reset breathing at the exit. Hold the same effort as lap one.

F1 precinct, opening bike circuits

Choose an effort the heat will let you repeat

Smooth city roads can give you a wonderful first split and a very poor afternoon. Set effort and fluid intake early, then ride the repeated sections as patiently as if nobody could see your speed.

Cap opening watts. Start fluid and electrolyte intake from lap one.

F1 precinct, middle bike circuits

Make cooling part of the pacing plan

By the middle of a hot city ride, the same wattage can feel very different. Listen to the cost of the effort, not just the number on the screen, and keep drinking before thirst becomes the story.

Hold effort over watts if the heat bites. Fuel on the same schedule each lap.

F1 precinct, final bike circuit

Get off the bike ready for 18 km on foot

Late in the ride, there's very little to gain from one more fast circuit. Get the final planned fuel and fluid in while you can still do it comfortably. Your first run kilometres will tell you whether that decision mattered.

Stay patient. Finish planned fluids before T2.

Marina Bay waterfront, opening run

Use the first kilometres as a heat check

The waterfront landmarks are an easy excuse to start too fast. Take the first part of the run by breathing and effort, find every useful bit of cooling and let the rhythm arrive instead of forcing it.

Hold opening pace. Take fluid and ice at every station.

Marina Bay landmarks, finishing run

Race what is left, not what you hoped to have

On a second hot run loop, the skyline hasn't changed but your legs have. Keep cooling and eating where you can. If you have something left, this is the time to use it.

Compare lap two to lap one honestly. Run the last kilometres on effort.

What to check in race week

Before travelling, check the final 2027 race day, swim access, bike laps, run turns, transitions and aid locations. Don't memorise the old F1 circuit as though it were your route. More importantly, work out when you will drink, how you will cool and what you will do if your usual pace becomes too expensive.

Forecast statusToo early for a forecast

A race-day forecast is not meaningful yet; check back closer to the event.

Temperature
25.2–29.9°CDew point centred on 24.5°C
Wind and gusts
8.5 km/hGusts up to 26.6 km/hPrevailing direction NNE
Rain likelihood
Up to 100%Wet-surface uncertainty retained

Historical baseline, 2019–2025 · Open-Meteo historical archive · Updated 2026-09-22.Historical comparison only. This is not a forecast for 2027.

Race-week email is available once the organiser confirms the event date.

Build the legs.
Practise the decisions.

A finish range gives you something to work towards. The preparation is specific to this race: heat tolerance, sustainable power for 80 km and a run plan that still works when humidity makes a normal pace costly.

I’m Tom. With Sense Endurance Coaching, I’ll build that preparation around your life, follow how you respond and adjust the work as you get closer to Singapore.

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Course sourceOfficial course

PhotographyShlok RanaPexels Licence · resized, cropped and monochrome

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