Built by an Engineer, Tested by an Athlete

Hybrid Athlete

Where Strength Meets Endurance

Technology executive by day, endurance athlete by passion. Combining the discipline of marathon running, the mental toughness of Ironman triathlon, and the hybrid demands of HYROX competition.

Thomas Prommer - HYROX Athlete
32 Garmin Fitness Age
3 Ironman Finishes
>2500km Ran Last Year

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Free Training Tools

Data-driven calculators built from real training algorithms

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New

HYROX Pace Calculator

Calculate your running splits and station times for optimal HYROX performance

Try Calculator Updated

Training Zones Calculator

Calculate pace, heart rate, and power zones using 10+ methods

Try Calculator

Guides & Resources

Guide What is a Good HYROX Time? Complete breakdown of finish times by division, skill level, and station benchmarks

Recent Results

Personal bests and race highlights

Dec 2025

Valencia Marathon

 Marathon • Finisher

Solid performance on a fast course. Recovery from Berlin training block showing.

3:51:01 Finish Time
Sep 2025

Berlin Marathon

 Marathon • Finisher

Perfect autumn conditions. Executed negative split strategy in the final 10K.

3:55:09 Finish Time
Mar 2024

LA Marathon

 Marathon • AG 45-49

Home race with great crowd support through the city.

3:23:41 Finish Time

Upcoming Races

Race calendar and training focus

May 2026

HYROX Berlin

HYROX
planned
Dec 2026

Valencia Marathon

Marathon
planned
May 2026

Ironman 70.3 Da Nang

70.3
planned
Free Training Tools

Train Smarter with Data

The same algorithms I use for my own marathon and Ironman prep, now available as free calculators.

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