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IRONMAN 70.3 Hradec KrálovéTraining Plan & Race Guide 2026

Hradec Králové, CzechiaAugust 16, 202670.3 mi — Half Distance2 min readPublished July 9, 2026
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01·Course Characteristics

Speed and cobblestones in Hradec Králové

A fast, river-based course that winds through East Bohemia. Success requires managing pacing on flat, high-speed roads and handling technical city-center run sections.

Climate
25°C
Peak air · water 19-21°C · mid-August heat risk
Conditions
Technical
Cobblestones on run · Elbe River current · exposed bike
Elevation
450 m
Bike gain · flat and fast · minor rollers
Difficulty
4.5 / 10
A fast course, but river currents, summer heat, and historic city-center cobblestones elevate the overall physical demand.

There's still hope!

Only 5 weeks to go — but it's not too late.

The ideal build for this course is 16 weeks, and you have 5. We'll compress the essentials into your remaining time, prioritizing the demands that matter most on this course to get you to the finish line.

Build my 5-week crash plan

02·Course by Section

Swim · Bike · Run — the data & the tactics

01
Swim

The Elbe River Loop

Labe River
DISTANCE
1.9 km
FORMAT
Single-loop
WATER
River
TEMP
19-21°C
WETSUIT
Likely legal

A single-loop swim in the Elbe (Labe) River. You will experience mild currents depending on the flow rate, requiring solid sighting and adaptive pacing.

02
Bike

East Bohemian Flats

Hradec Králové countryside
DISTANCE
90 km
LOOPS
2 loops
ELEVATION
450 m
TERRAIN
Flat & rolling
SURFACE
Smooth asphalt

A fast, two-loop bike course heading into the rural landscapes surrounding the city. The flat terrain allows for sustained aerodynamic riding, but exposes you to potential crosswinds.

03
Run

The Historic City Center

Old Town & Elbe banks
DISTANCE
21.1 km
LOOPS
3 loops
ELEVATION
60 m
SURFACE
Asphalt & cobblestones
SHADE
Partial

A multi-loop run taking you through the historical heart of Hradec Králové and along the river banks. The course features tight turns, spectator-lined streets, and segments of cobblestones.

03·Training Timeline

From today to the finish line

16 weeks

This 16-week plan is structured to build the specific muscular endurance needed for a sustained aerodynamic effort on the bike, combined with joint durability for the technical, cobblestone-heavy run. By progressing from base aerobic volume to race-pace simulations, you will arrive at the start line both fresh and robust.

Today · WK 0Race Day
WK 1–4

Aerobic Foundation

Establish a solid baseline with low-intensity volume across all three disciplines.

WK 5–8

Strength & Aero Tolerance

Build sustained power on the bike and condition your muscles for the flat aero position.

WK 9–12

Race-Specific Build

Introduce transition runs and pace-specific sessions mirroring the flat bike and technical run.

WK 13–14

Peak & Cobble Prep

Execute key simulation workouts and prepare your joints for high-impact running.

WK 15–16

Taper & Sharpen

Reduce volume to shed fatigue while maintaining intensity to keep your engine primed.

Adapts to your fitness, schedule & recovery every week.

Personalize this timeline

04·Race-Day Execution

Controlled aggression, start to finish

Weather & cooling

August in Czechia can be warm and humid, with temperatures approaching 25°C. Utilize every aid station for cold water over your head and neck to keep your core temperature down.

Fuel & hydration

Aim for 80-90g of carbohydrates and 750-1000ml of fluids per hour on the bike to prep for a hot run. The flat bike course makes fueling highly predictable, so stick to a strict 15-minute timer.

Pacing

With a flat bike course, avoid the temptation to over-torque early on. Keep your power output steady at 70-75% of FTP to preserve your running legs for the technical, jarring city cobblestones.

Gear & logistics

Opt for a deep-section wheelset given the flat, fast terrain, but ensure you can handle light crosswinds. Wear highly cushioned shoes to absorb the impact of the cobblestones during the multi-loop run.

Frequently Asked Questions

Where is the IRONMAN 70.3 Hradec Králové race located?

This event takes place in the historic city of Hradec Králové, located in Czechia. You will swim, bike, and run through this beautiful Eastern Bohemian region, which offers a scenic and spectator-friendly backdrop for the entire race.

What is the date of the IRONMAN 70.3 Hradec Králové in 2026?

The race is scheduled to take place on August 16, 2026. Make sure to plan your travel and training progression around this late-summer race date to ensure you arrive in Czechia fully prepared.

When should I arrive in Czechia for IRONMAN 70.3 Hradec Králové?

We recommend arriving in Hradec Králové at least two to three days before the August 16, 2026 race date. This gives you ample time to check in, complete your athlete registration, scout the local courses, and acclimate to the late-summer weather in Czechia.

What should I expect from the event location at IRONMAN 70.3 Hradec Králové?

You can expect a highly energetic atmosphere in Hradec Králové, Czechia, which is known for its stunning architecture and flat, fast terrain. The local community warmly supports the event, making it an ideal destination for both first-timers and athletes chasing a personal best.

Can I find official training plans specifically for IRONMAN 70.3 Hradec Králové?

Yes, FE26 offers science-based training programs tailored to help you conquer the specific demands of the Hradec Králové course in Czechia. Our plans are designed to prepare your engine for the late-summer conditions you will face on August 16, 2026.

Your Personalized Plan

Stop guessing your intervals. Train for this course.

FE26 builds your plan around your Strava data, your real schedule, and the exact demands of IRONMAN 70.3 Hradec Králové — then adapts every week to how you actually perform.

Strava sync
Benchmark your fitness
Adaptive
Weekly periodization
Course-specific
Built for these demands
Fits your life
Around your calendar
Create your IRONMAN 70.3 Hradec Králové plan

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