Race · Triathlon

IRONMAN 70.3 Jönköping 2027: training, course and tips

IRONMAN 70.3 Jönköping is a half distance at the southern tip of Lake Vättern: a 1.9 km swim in Munksjön in the middle of town, a hilly 90 km ride through the country east of Jönköping and a 21.1 km run around Munksjön. Here we go through the course leg by leg, how many weeks you need and how TriQuest builds your plan to the start.

Get started Sign in
The TriQuest calendar on iPhone with the week's workouts, their structure and times.

IRONMAN 70.3 Jönköping 2027 at a glance

IRONMAN 70.3 Jönköping is on 11 July 2027. In a TriQuest plan the last week is race week, the week before it the taper, the four weeks before that the race-specific phase and the eight before those the build. Everything earlier is base.

The race is on 11 July 2027, with the start and finish in central Jönköping. Entry and more info: ironman.com/races/im703-jonkoping.

  • Date

    11 July 2027.

  • Swim

    1.9 km, one loop in Munksjön, with a rolling start.

  • Bike

    90 km, one loop through hilly country east and north of Jönköping.

  • Run

    21.1 km on a flat lapped course through the centre and around Munksjön, finishing in Rådhusparken.

  • Cut-offs

    1:10 for the swim, 5:30 to the end of the bike and 8:30 for the whole race, from your own start (2026).

  • Water

    About 20 °C on average, 18–21 °C expected for 2026.

  • Weather

    On average a high of about 22 °C and a low of 10 °C.

  • Wetsuit

    The decision is announced on race morning. IRONMAN's rules allow wetsuits up to and including 24.5 °C.

Besides the three cut-offs, 2026 had times on the bike that apply to everyone, whatever their start time, because the roads close: Juteleden (10.1 km) by 11:50, Svarttorp (24.3 km) by 12:40, Vireda (46 km) by 13:30 and Kaxholmen (74.2 km) by 14:50.

The course leg by leg

Jönköping's course has a short swim in a lake in the middle of town, a ride that asks for strength on the climbs and a fast run in town. It's the ride that sets it apart from most half distances.

The swim in Munksjön

The swim is in Munksjön, the lake in the middle of Jönköping, not in Vättern. It is one 1.9 km loop, out and back with two left turns, entering and leaving the water by a ramp. The start is rolling: five swimmers at a time every four seconds, in start groups by your expected swim time. There is no warm-up in the water before the start.

  • Swim intervals from your CSS, and practise sighting on buoys and turning around them.
  • Swim in your wetsuit in open water a few times before the race.
  • Practise starting without a warm-up in the water: easy for the first minutes, then your pace.

The hilly ride

The bike is one 90 km loop. It leaves Jönköping and Huskvarna, climbs into the rolling country to the east and comes back down toward Vättern via Kaxholmen. The course is rolling, with 779 metres of climbing, and there is an aid station about every 20 kilometres. Overtaking is not allowed on a stretch at Vista kulle at about 77 km.

  • Put your long rides on hilly roads, and practise climbing at even power instead of pushing too hard on every hill.
  • Bike workouts have targets in watts from your FTP: on the climbs, power helps you hold back so your legs are still there for the run.
  • Practise descending and cornering, and eating and drinking on the calmer stretches.

The run around Munksjön

The run is 21.1 km on a lapped course: a little over two laps, running through the centre three times and around Munksjön twice. The finish is in Rådhusparken. The course is flat and fast with a few technical passages, and the aid stations are never more than 2.5 km apart.

  • After a hilly ride your legs are tired in a different way. Brick sessions teach them to run anyway.
  • The laps make the race easy to break up and to take fuel at every aid station.
  • Save a little for the second lap of the lake.

How many weeks do you need?

TriQuest builds the plan backwards from the race. For a half distance the last week is race week, the week before it the taper, the four before that a race-specific phase and the eight before those the build. The rest is base, and if you have no training history the plan starts with one or two weeks of preparation. That makes 14 weeks counted from the build, and more with base before it. With less time, the base shrinks first and the taper last.

Within base, build and the race-specific phase every fourth week is lighter, about three quarters of the week before. For a half distance about 20 % of the time goes to swimming, 50 % to cycling and 30 % to running, and the long sessions grow toward at most about 3.5 hours on the bike and 2 hours of running (just under 3 hours and a little over 1.5 hours for a first half distance). They are ceilings, not requirements.

How many hours you train is up to you: you set which days and how long you can, and the plan stays within it. The weeks below are examples from the build phase, not a plan. Your plan is built from your days, your time and where you are.

Example week: your first half distance, 6–7 hours

  • Monday: rest.
  • Tuesday: swim 40 minutes, technique and steady endurance.
  • Wednesday: bike 60 minutes with threshold intervals.
  • Thursday: run 45 minutes with threshold blocks, and strength 25 minutes.
  • Friday: swim 40 minutes.
  • Saturday: long ride, hilly if you can, 2 hours 15 minutes. Every other week with a short run straight after.
  • Sunday: long run, 1 hour 5 minutes, easy.

Example week: experienced triathlete, 9–10 hours

  • Monday: swim 50 minutes.
  • Tuesday: bike 75 minutes with threshold intervals, and an easy 30-minute run.
  • Wednesday: run 55 minutes with threshold blocks.
  • Thursday: swim 50 minutes, and strength 30 minutes.
  • Friday: easy ride 60 minutes, or rest.
  • Saturday: long ride on hilly roads, 2 hours 45 minutes. Every other week with a 20-minute run straight after.
  • Sunday: long run, 1 hour 30 minutes, easy.

The plan is a proposal, never a rule. If you move a session, swap the sport for a day or ask the Coach for something else, it goes the way you choose.

Brick sessions and open water

Brick sessions, a run straight off the bike, are what make your legs feel at home when you run out of transition after 90 km of hills. TriQuest puts them where they do the most good:

  • None in the base.
  • In the build every other loading week: an easy ride followed by a short, easy run.
  • In the race-specific phase the week's long ride becomes the race session: the last 90 minutes at race pace, then a run at race effort for a while before it turns easy.
  • The taper week: a short race session. Lighter weeks have none.

Open water

Swim workouts have a pace per 100 metres from your CSS and can be swum in the pool or open water. Once the water is warm enough for you, move some of them outside, and the Coach can propose open water sessions that you approve. In Munksjön, what matters is sighting, turns and swimming close to others.

  • Never swim alone in open water, and use a visible swim cap or buoy.
  • Practise getting out and running to transition: in Jönköping it is a walk between transition and the start.
  • Try your wetsuit in water around 18–21 °C, as expected for 2026.

Fuel during the race

A half distance lasts several hours, and the cut-off is 8:30. Without fuel you stop on the run, and with too much at once your stomach says no. The guidelines TriQuest follows for races longer than 2.5 hours:

  • 50–80 grams of carbohydrate an hour, by how used to it you are. An untrained stomach rarely takes more than 60.
  • About 550 ml of fluid an hour as a starting point, more in heat and less in cold. Don't drink more than you sweat out.
  • Sodium, about 500 mg per litre of fluid, unless you have measured your sweat.
  • Work out your plan part by part with race nutrition, practise it on your long rides and follow it in the app on race day.

On a hilly course it is easiest to eat and drink on the flatter stretches and at the top of the descents, not on the climbs. On the bike there are aid stations about every 20 kilometres and on the run at most 2.5 km apart. Read more in the guide to race fuelling. This is training advice, not medical advice.

Race week

For a half distance the plan tapers for one week, to about 60 % of the volume, and race week to about 40 % with a short opener on the bike. The intensity stays, but the sessions get shorter, so you arrive at the start rested and sharp.

The packing list

  • Swim: wetsuit, goggles (two pairs), the race's swim cap.
  • Bike: a bike serviced in good time, geared for the hills, helmet, shoes, bottles, spare tube and tools, fuel for the bike.
  • Run: shoes you have run long in, a cap, a race belt, fuel for the run.
  • Race number, timing chip and clothes to change into after the finish.

The transitions

In Jönköping your gear is in bags, one for the bike and one for the run. After the ride you put your helmet, shoes and bike computer in the run bag and take out your running shoes and cap. Walk the route from the swim exit through transition beforehand, so you know where your bike and your bags are.

The day before

Short and easy: an easy ride or run with a few short strides, food you know, pack your bags and go to bed early. Ride the first kilometres of the bike course at an easy pace if you can, so you know how the climbs feel.

Choose IRONMAN 70.3 Jönköping in TriQuest

Search for IRONMAN 70.3 Jönköping when you choose your race, and the name, date and distance are filled in. Tell TriQuest what your week looks like, which days suit long sessions and how much time you have, and the plan is built to the start: base, build, a race-specific phase and a taper. Workouts go to your Garmin, and the Coach follows up and proposes changes that you approve. When your week changes, the plan changes with it.

Official page: ironman.com/races/im703-jonkoping. TriQuest is not affiliated with IRONMAN or the organiser; IRONMAN is a registered trademark of its owner.

Common questions

Common questions about IRONMAN 70.3 Jönköping

When is IRONMAN 70.3 Jönköping 2027?

IRONMAN 70.3 Jönköping is on 11 July 2027.

How long is IRONMAN 70.3 Jönköping?

A half distance: a 1.9 km swim, a 90 km ride and a 21.1 km run, 113 km or 70.3 miles in all.

Is the swim at IRONMAN 70.3 Jönköping in Lake Vättern?

No. The swim is in Munksjön, the lake in the middle of Jönköping: one 1.9 km loop, out and back.

What are the cut-off times at IRONMAN 70.3 Jönköping?

Cut-offs 2026: 1 hour 10 minutes for the swim, 5 hours 30 minutes to the end of the bike and 8 hours 30 minutes for the whole race, counted from your own start. There are also road-closure times on the bike that apply to everyone.

How warm is the water?

About 20 °C on average; 18–21 °C was expected for 2026. The exact reading is announced on race morning, as is the wetsuit decision.

How hilly is the bike course?

It is rolling, with 779 metres of climbing over 90 km. The course climbs from Vättern into the country east of Jönköping and comes back down toward the lake near the end.

What is the run course like?

A little over two laps through the centre and around Munksjön, flat with a few technical passages, finishing in Rådhusparken.

How many weeks do I need to train for IRONMAN 70.3 Jönköping?

A TriQuest plan has 14 weeks from the build to the start: eight weeks of build, four race-specific, a one-week taper and race week. With more time you get base before it. With less time the phases shrink, the base first.

How many hours a week do I need for a half distance?

That's up to you: you set your time, and the plan stays within it. The examples in this guide start from 6–7 hours a week for a first half distance and 9–10 for an experienced triathlete.

Is 70.3 Jönköping a good first half distance?

The swim is short and in a lake in the middle of town, and the run is flat. The ride is what asks the most, so train on hills and set your race pace so you have something left for the run.

Can I train for IRONMAN 70.3 Jönköping with TriQuest?

Yes. Search for IRONMAN 70.3 Jönköping when you choose your race, and the name, date and distance are filled in, and the plan is built to the start around your week.

What does it cost?

During the beta, everything is included at no cost.

More about TriQuest

  • Triathlon

    Plans from sprint to full distance, with brick sessions, a taper and race nutrition.

  • Race calendar

    Every race in TriQuest's race calendar, with place, distances and date.

  • Half distance

    1.9 km, 90 km and 21.1 km: the bike takes the most room.

  • Race nutrition

    Carbohydrate, fluid and sodium for the race, step by step.

  • Race fuelling

    Carbohydrate, fluid and sodium per hour, by the race's length.

Ready to train smarter?

Let TriQuest bring the plan, the workouts, the analysis and the coaching together in one place.

Get started Sign in