Hyrox & Hybrid Training: 5 Injuries to Watch For (and How to Avoid Them)

Hybrid training, and Hyrox races in particular, has exploded in Sydney. Eight 1km runs, with a functional workout station after each one: SkiErg, sled push, sled pull, burpee broad jumps, rowing, farmers carry, sandbag lunges and wall balls. It’s a brilliant, accessible challenge. It’s also a recipe for some very predictable niggles.

Having worked with athletes at international competitions, I know the pattern: when training gets popular fast, people ramp up faster than their bodies can adapt. Here are the five problem areas I’d keep an eye on, and how to stay on the start line.

1. Knees: sled push and sandbag lunges

MERRYN: Pain around or behind the kneecap is the big one. Hundreds of lunge and sled-push reps under fatigue load the front of the knee heavily, especially if your hips and quads aren’t strong enough to share the work.

Prevent it: build quad and glute strength with split squats, step-ups and wall sits. Increase your lunge volume gradually, and keep your knee tracking over your middle toes.

2. Calves and Achilles: running on tired legs

MERRYN: Hyrox running is “compromised running”: you’re running straight off a station with heavy, tired legs. That puts a lot of strain on your calves and Achilles, especially if you’ve added lots of running quickly.

Prevent it: do heavy calf raises with both a straight and a bent knee, 3 times a week, and build your running volume by no more than about 10% a week. My Calf Heart post explains why your calves deserve this much attention.

3. Lower back: sled pull, farmers carry and wall balls

MERRYN: When your core and hips fatigue, your lower back often takes over, rounding on the sled pull or arching on wall balls.

Prevent it: practise hip hinges (Romanian deadlifts) and loaded carries in training. Brace with a breath before each effort, and slow down when your form goes.

4. Shoulders: wall balls and SkiErg

MERRYN: One hundred wall balls is a lot of overhead work. Tight upper backs and weak rotator cuffs often show up here first as pain at the front or side of the shoulder.

Prevent it: do upper back mobility work (a foam roller is great for this), band external rotations, and build your overhead volume gradually.

5. Hamstrings and hips: burpee broad jumps and running

MERRYN: Explosive jumping followed by running is a classic set-up for hamstring strains and hip flexor tightness.

Prevent it: include Nordic curls or slider hamstring curls, warm up properly with some faster strides, and see my hamstring stretches for between sessions.

My top 5 tips for hybrid athletes

1. Strength first. Two good strength sessions a week protect you more than extra conditioning.
2. Increase one thing at a time, whether that’s running, station volume or intensity.
3. Train your breathing. Staying calm and nasal-breathing at easy paces improves your efficiency and recovery. See Performance Breathing.
4. Respect recovery. Sleep, easy days and a deload week every 4–6 weeks.
5. Don’t train through sharp pain. A niggle treated early is usually a week or two of tweaks. Ignored, it can be months.

Training for a Hyrox or hybrid event and something’s not right? Book an appointment. I can assess the problem, use dry needling where it helps, and build you a strength plan, or set you up with a Custom Digital Program to follow alongside your training.