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Race IntelligenceRoth, Germany

Challenge Roth

Know your day before you race it.

Enter four numbers you already train with. You get a likely finish range, target paces and watts, and how I would race this course.

Race day
4 July 2027
Swim
3.8 km
Bike
180 km
Run
42.2 km

Published route evidence. Final 2027 route pending. Checked 15 Sept 2026.

Official course routeThe real GPS route for each discipline with official GPX data available, drawn in one shared coordinate space.

01 Race Card

Build my Race Card

Your first range uses conservative assumptions. Add optional evidence to make it more specific. It is calculated in your browser and saved only on this device.

Your numbers
Distance unit
Weight unit
You and this race
Sharpen your range with more detailOptional. Recent swim, bike and run results, equipment and transitions.

Add only the evidence you have. Every control changes a discipline range, its uncertainty, or an execution-risk explanation.

Swim evidence

Replaces the broad pool-to-open-water assumption.

Bike and equipment

These replace broad mass, aerodynamics, tyre, and power-to-speed assumptions.

Run evidence

A recent effort and honest durability/acclimation answers refine the post-bike run.

Race execution

Transition proficiency changes the T1/T2 range and how wet conditions are treated.

02 The course

What Roth actually gives you

You swim one calm loop of the Main-Donau-Kanal, ride two laps through Bavaria's rolling countryside past the climbs of Solarer Berg, then run a marathon along the canal and through Roth's town roads to a finish inside a stadium built for exactly this moment. Nothing here is flat, and nothing here is easy, but the course rewards a rider who treats the hills as a repeated bill to be paid twice, not a headline to be chased once.

Show distances in

Swim

3.8 km

Canal

Layout
1 loop
Setting
the Main-Donau-Kanal, Roth

A single loop of calm canal water, with none of open water's chop or current, gives a clean, controllable start to a long day.

Source: current course description

Bike

180 km

Rolling Bavarian Countryside

Layout
2 loops
Setting
the triathlon district around Roth, Bavaria, including the climb of Solarer Berg
Elevation
1570 m published profile difference

Two laps of rolling Bavarian countryside bring real, repeated climbing, most of it on Solarer Berg, which the field rides twice before the marathon even starts.

Source: neu 2024 (current)

Run

42.2 km

Canal-side and Town Roads

Setting
along the canal through Roth's marketplace and Büchenbach, finishing in the triathlon stadium
Elevation
164 m published profile difference

A canal-side and town-road marathon with modest elevation gain rewards legs that paid the bike's climbing bill early rather than late.

Source: current course description
Where these course facts come from

These facts come from the organiser’s latest published material: swim, current course description; bike, neu 2024 (current); run, current course description. They describe the character of the course. They do not confirm the final 2027 route.

03 Race plan

How I’d want you to race it

One job for each part of this course. The distance markers tell you when the job changes. The course tells you why.

Swim

Start the long day calm

  1. 0–3800 m

    One loop of the canal

    Settle into a day, not a sprint

    A single loop of calm, current-free canal water removes the swim's usual variables. Use the clean water to settle into a controlled rhythm you can hold for the full 3.8 km, not to bank time you don't need yet.

    • Settle by 400 m
    • Breathe on a fixed pattern

Bike

Pay Solarer Berg's bill twice, not once

  1. 0 km–40 km

    Out onto lap one

    Ride into the hills at a number, not a feeling

    The course leaves the stadium into Bavaria's rolling countryside towards the first climb of Solarer Berg. Start conservatively; the same hill returns on lap two and will not forgive an over-cooked first visit.

    • Cap power on the first climb
    • Fuel before the hills start

  2. 40 km–90 km

    Solarer Berg, lap one

    Climb it once, deliberately

    This is the course's defining feature, and it repeats. Ride it at your planned intensity ceiling regardless of the crowd's noise or how fresh your legs feel this early in a long day.

    • Hold target watts, not target time
    • Ignore the crowd's pace

    An honest first climb is what makes the second one survivable

  3. 90 km–140 km

    Lap two begins

    Respect a hill you've already paid for once

    The second lap brings the same rolling terrain and the same climb, now on legs that have already spent real effort on it once. Protect the number you rode lap one at rather than defending a time split.

    • Compare effort to lap one, not speed
    • Keep drinking through the second climb

  4. 140 km–180 km

    Back to the stadium

    Arrive at T2 ready to run 42.2 km

    As the course flattens back towards Roth, shift the focus from the bike to what comes next. Finish planned nutrition and let cadence rise before you're back in the stadium and on your feet.

    • Finish the planned bottle
    • Let cadence rise in the closing kilometres

Run

Collect on a bike ridden honestly

  1. 0 km–10 km

    Out along the canal

    Run off two climbs, not one flat bike

    The run leaves the stadium along the canal on legs that have climbed Solarer Berg twice. Let the opening kilometres be genuinely easy; a marathon has no patience for a bike ridden honestly followed by a run started carelessly.

    • Shorten stride out of T2
    • Walk the first aid station if the legs ask for it

  2. 10 km–30 km

    Through the marketplace and Büchenbach

    Hold the number the bike earned you

    The middle of the marathon moves through Roth's marketplace and Büchenbach on modest, manageable terrain. This is where the day is actually decided: hold your planned pace and let the crowd's noise motivate rather than accelerate you.

    • Reassess pace every 5 km
    • Keep fuelling on schedule, not on appetite

  3. 30 km–42.2 km

    Back to the stadium

    Only race the finish you've actually earned

    The closing kilometres return along the canal to the stadium finish, in front of a crowd Challenge Family calls the sport's own stadium atmosphere. If the first 30 km went to plan, this is where you spend what's left. If they didn't, protect the finish instead of forcing one.

    • Decide the finish honestly, not emotionally
    • Save something for the stadium entrance

04 Race week

What I would keep an eye on

There is no useful 2027 forecast this far out. For now, past race dates give us a point of reference. Closer to the race, the forecast will tell us whether the plan needs changing.

Forecast statusToo early for a forecast

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

Temperature
14.5–27.2°CDew point centred on 11.6°C
Wind and gusts
10.0 km/hGusts up to 40.3 km/hPrevailing direction W
Rain likelihood
Up to 80%Wet-surface uncertainty retained

Historical baseline, 2019–2025 · Open-Meteo historical archive · Updated 2026-09-15.Historical comparison only. This is not a forecast for 2027.

05 Method

What goes into your range

Your CSS, FTP, weight and run threshold create the first range. Open-water, bike, run and execution evidence can replace broad assumptions. Course data and the historical conditions baseline shape every simulation.

  1. Your numbersCSS · FTP · weight · run threshold
  2. This raceDistance · water type · elevation · exposure
  3. Your Race CardFinish and discipline ranges, with target paces and watts

Confidence is built from four inputs

Athlete evidence
Builds with recent open-water, bike and run efforts
Bike setup
Builds with equipment, mass, aero and tyre detail
Course evidence
Partial while the 2027 route is unconfirmed
Race-week conditions
Historical baseline until a forecast is useful
How the model works

It starts with the targets in your Race Card, then samples the parts of a full distance that vary: open-water pace, transitions, bike speed at the planned power, and the drop in run performance after the swim and bike. Repeating that calculation produces a likely range rather than a single heroic number.

The current time calculation uses this race’s published distances, or standard full distance distances where none are published, with the available course headings, elevation and exposure evidence. Weather scenarios vary temperature, dew point, wind, gusts, rain and water conditions together. Unknown route detail stays visible as uncertainty rather than false precision.

It is not predicting your exact finishing time, placing, or race-day weather. It answers a narrower question: given the plan and the information we have, what range of day is plausible, and where is the uncertainty coming from?

Confidence is not a permanent “low”. It is recalculated across four separate inputs:

  • Your evidence: consistent inputs and recent race-like swim, bike, and run results.
  • Bike setup: measured or specified aerodynamics rather than a broad prior.
  • The course: verified distance and route character, including elevation and technical sections.
  • The conditions: a current forecast is more useful than a historical comparison.

It starts low when those inputs are broad. It can become moderate or high as the evidence improves. A narrower range means better information, not a guarantee.

06 Next steps

If Roth is your race

Your range is built on today’s numbers. The months of training before race day decide what those numbers become.

The work from here.

Self-guided routeFull-distance training plansTraining plans for the durability and repeated climbing this course asks for.See the plans Personalised routeWork with me on the whole buildCoaching when you want the plan, feedback and race decisions joined up.See coaching

Further reading

ArticleFull-distance race strategy: calm execution beats chaosThe pacing and fuelling discipline a two-lap, two-climb course like Roth asks for.ArticleFix the first ten minutes off the bikeUseful before a marathon that starts on legs that climbed Solarer Berg twice.

Evidence

Sources and verification

Course status: Partially verified. The organiser’s descriptions and latest published route profiles are in use. The final 2027 route is not yet confirmed. Last checked 2026-09-15.