The first half of a Hyrox race is the most psychologically dangerous. You feel strong. People are passing you. The temptation to chase is huge. Resist it. The race is decided by the second half, and the second half depends entirely on how you paced the first.
The 5 km / 5 station problem
The opening half of a Hyrox is:
- 1 km run + ski erg
- 1 km run + sled push
- 1 km run + sled pull
- 1 km run + burpee broad jump
- 1 km run + rower
5 km of running plus 5 hard stations. Total time: 40-50 minutes for most open athletes.
The mistake nearly every first-timer makes: treating this opening half like a workout. Going at "hard but sustainable" pace. By station 5 the legs are 30% gone, by station 7 the wall ball is impossible.
The honest pacing rule
Run the first 1 km at 30-45 seconds slower than your standalone 1 km pace.
If your standalone 1 km pace is 4:20, your Hyrox first 1 km should be 4:50-5:05. If your standalone is 5:00, your Hyrox first 1 km should be 5:30-5:45.
This feels suspiciously easy. That's the point.
Station effort levels (first half)
Each opening station has a target effort level. These are based on RPE (rate of perceived exertion) on a 1-10 scale.
| Station | Target RPE | Why | |---|---|---| | Ski erg | 7 | Settling in. Find rhythm. | | Sled push | 7-8 | Strong but not max. The push is short; don't overshoot. | | Sled pull | 7-8 | Same as push. | | Burpee broad jump | 6-7 | Pacing reserve. The jumping is repeatable. | | Rower | 7 | Settled into race pace. |
That's a cumulative effort of "strong but composed". Not "all-out".
What "going too hard" looks like
The signs you blew the opening half:
- Heart rate above target by station 3.
- Breath ragged within 200 m of starting a station.
- Legs feel "spongy" by sled pull (station 3).
- You sprinted to a station to pass someone.
- Your first 1 km run was faster than your projected race average.
If three of these apply by station 3, slow the next run 15 seconds. Better to lose 30 seconds in the front half than 4 minutes in the back half.
Why pacing is hard
The temptation comes from three sources:
1. Adrenaline. Race-day cortisol makes everything feel easier than it is. Your perceived effort at station 1 doesn't match your actual effort.
2. Other athletes. People will pass you in the first 2-3 km. If you're not used to racing, the instinct is to chase. Don't.
3. The crowd. Spectators cheer harder for visibly hard effort. The cheers tempt you to push.
The athletes who finish best are the ones who ignore all three.
The transition cue
Between each run and station, there's a 5-10 metre transition area. Use it deliberately:
- At metre 950 of the 1 km run: slow to a fast walk.
- Approach the station composed, breathing controlled.
- At the station entrance: one deep breath in, one out.
- Start the station in rhythm, not in panic.
The athletes who sprint the last 50 m of every run arrive at each station gassed and start each station behind on breath. Cumulatively across 8 stations, this costs 2-4 minutes.
The mental script for the first half
If pacing well is the discipline, here are useful internal cues to keep you on plan:
- At the start line: "First 1 km is jogging. Find rhythm."
- At the start of ski erg: "Half effort. The race is 90 minutes."
- Halfway through sled push: "Stay low. Save legs."
- At burpee broad jump: "One jump at a time. Steady cadence."
- At rower: "Halfway. Now I race."
The phrase "now I race" applies at station 5. Before that, you're loading the race, not racing it.
What changes at the halfway point
After station 5 (rower), the race shifts. You've used roughly half the available glycogen and roughly half the available muscular reserve. The back half is:
- 1 km + farmer's carry
- 1 km + sandbag lunges
- 1 km + wall ball
- Final 1 km run
This is where racing actually happens. The athletes who paced the first half well move up the field through stations 6-8 because the athletes who went too hard slow down.
Common first-timer errors
1. Treating station 1 (ski erg) as a power test. Going at 95% effort because it's "just one station". You've now committed the next 80 minutes to recovery.
2. Sprinting the run to make up for a slow ski erg. Doubling down on the wrong strategy. The sprinted run takes more energy than it returns.
3. Going hard on sled push because "I'm strong". Strength is decoupled from race-day pacing. A strong athlete who goes 100% on the sled is just as wrecked as a weak athlete who went 100%.
4. Not eating before the race. The first half on under-fuelled legs is brutal. Eat 2-3 hours before, top up 45 minutes before.
How to practice pacing
In the 6 weeks before race day:
- Weekly run-and-station session. 1 km easy + 1 station + 1 km easy + 1 station. Practice the controlled effort.
- One full race simulation 2-3 weeks before. Wear a watch, hit specific 1 km splits, log RPE per station.
- The simulation will hurt. That's where you learn what your sustainable pace actually is.
The honest summary
The first 5 km of a Hyrox decides whether you finish strong or limp through the back half. The pacing rule: 30-45 seconds slower than your standalone 1 km pace, and stations at RPE 7-8, not max.
People will pass you. Let them. Many of them are the people you'll pass at station 7. The athletes who race well are not the ones who lead at station 3; they're the ones who finish strong because they paced honestly.
Race the back half. The front half is the loading phase.
Related
Next step
Opening pace is only disciplined if you know what pace you can actually hold. The fitness assessment quiz gives you that number instead of a guess.
The HYROX training plans then build the compromised running the first half asks for.
[ FAQ ]
Frequently asked
How fast should I run the first 1 km?
30-45 seconds slower than your standalone 1 km pace. The race is 90 minutes; the first 1 km should feel suspiciously easy.
Why does the first half decide the race?
Hyrox glycogen and pacing reserves are finite. Burning them in the first 5 km means you can't do the last 3 km. Most blowups happen at stations 6-8, caused by stations 1-2.
Should I walk to the stations after the run?
Jog or fast walk the last 20-30 m as a deliberate transition. Don't sprint into the station. The metres saved by sprinting are lost in the station because you arrived breathless.
Is it ok to be passed in the first half?
Yes. The athletes passing you in the first 5 km are often the ones you pass in the last 3 km. Race your race, not theirs.
Written by
The Suth Performance teamCoaches and editors
The Suth Performance programming team, led by HYROX Elite 15 athlete Ben Sutherland. They write the training, technique and race-day guides on this site, and Ben reviews every one before it is published.
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