“Compromised running” is running when your legs are already tired from something else. In a HYROX race, every run after the first is compromised. Training for it is different from normal running training, and it is one of the most useful things a hybrid racer can do.
Why it feels so hard
After a sled push or lunges, your legs are full of fatigue and your heart rate is high. The first few hundred metres of running feel awful — heavy, slow and uncoordinated. With training, that phase gets shorter and less severe.
The basic session
Pair a station with a run, and repeat. For example:
- 50 m sled push (or a heavy leg exercise), then 1 km run
- Repeat three to five times
Run at your target race pace. The aim is to practise getting back to pace quickly after the station.
Variations
- Short and sharp: 20 wall balls then 400 m run, six to eight times.
- Race simulation: Half a race — four runs and four stations.
- Leg-heavy: Lunges or step-ups then 1 km run, to prepare for the late stations.
How often
Once a week is enough for most people. It is hard work, and you need your other sessions to build fitness too. Closer to a race, the sessions can become more race-specific.
What to focus on
Focus on the first 200 metres after each station. Start at a controlled pace and build into your target. Learn how long it takes your legs to come back.
Keep your easy runs easy
Compromised sessions are hard. Your other runs should mostly be easy, to build your aerobic base without adding too much fatigue. See Zone 2 for hybrid racers.
Track progress
Note your run times after each station. Over weeks, the gap between fresh and compromised running should shrink. That is your race getting faster.
Related
Pacing the eight runs covers race-day pacing, and hybrid brick sessions has more session ideas.