Over the last month, I’ve been at three very different races. An Olympic-distance event. A 70.3. An Ironman.
And across every level of athlete, I kept seeing the same thing happen late in the race.
Form falling apart.
Posture collapsing.
Stride mechanics breaking down.
Athletes who were aerobically fit enough to finish, but physically struggling to maintain movement quality once fatigue really set in.
And honestly, I think a lot of triathletes looking to improve their times may be missing one of the biggest pieces of the puzzle:
Strength.
That’s part of why I think the recent HYROX explosion is actually really interesting for endurance athletes.
If you are a triathlete watching the HYROX craze and wondering what the hell is going on, I don’t think it’s just another fitness trend. I think it’s exposing a gap that has existed in endurance training for years.
For a long time, one of the biggest things I’ve tried to encourage athletes to do consistently is gym work. Especially as we age.
And to be fair, most triathletes know they probably should be doing it.
The problem is they usually struggle to prioritize it consistently.
Most age group athletes still default to adding more endurance instead:
another ride
another run
another long session
Because mentally, it feels more specific to the sport.
But when you look at many of the best athletes in the world, or even some of the highest-performing age groupers, one common denominator is that strength work remains part of the process year round.
Not bodybuilding.
Not random exhaustion circuits.
Purposeful strength and durability work.
Because strength training is not just about building muscle. It is about maintaining posture under fatigue. Producing force efficiently. Protecting connective tissue. Improving movement quality. Holding mechanics together deep into a race instead of surviving the final hour with a body that is falling apart.
This becomes even more important as athletes get older.
You can often maintain aerobic fitness longer than structural durability.
That is why many athletes eventually reach a point where the limiter is no longer their cardiovascular system. It is their ability to physically tolerate the demands of the race without breaking down mechanically.
And this is where HYROX becomes fascinating.
In many ways, HYROX has gamified the exact type of work endurance athletes have needed all along.
Suddenly, there is a race attached to sled pushes, lunges, carries, wall balls, rowing, skiing, and functional strength endurance.
And once endurance athletes have a competition on the calendar, they approach the work differently.
They commit to it.
They train with more consistency.
They finally start building the posterior chain strength, stability, force production, and fatigue resistance that traditional endurance-only training often neglects.
Then something interesting happens.
A lot of athletes go back to triathlon and realize they feel stronger than they have in years.
They run better off the bike.
Their posture stays together longer.
They handle hills better.
They fatigue later.
They recover differently.
Not because HYROX replaced triathlon training.
But because it helped address a weakness their training had ignored for years.
Now, this does not mean every triathlete needs to become a HYROX athlete.
But I do think endurance sports are evolving.
The future is probably not purely “more volume at all costs.”
I think the future looks more like durable athletes. Strong athletes. Hybrid athletes. Athletes who can maintain movement quality and force production while still developing elite aerobic fitness.
And honestly, after watching race after race recently, I think a lot of triathletes looking for breakthroughs may not need another long ride as much as they need to become physically stronger and more resilient.
That does not make you less of an endurance athlete.
It probably makes you a better one.