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Welcome!

I’m Zebastian Gudmundsson, the coach behind Hyrox Fitness — a project built from over ten years of coaching experience across endurance, strength, and HYROX preparation.


My background includes years of competing in obstacle races, ultramarathons, and HYROX — experiences that have shaped how I understand endurance, recovery, and structure in training.


Hyrox Fitness grew out of a wish to share that approach through clear, well-designed programs and guides. Each plan is grounded in the same principles I apply when working with athletes — practical, measurable, and adaptable to real-life training.


What connects all of it is a belief that training should build both capacity and confidence.


Whether you’re preparing for your next HYROX race or simply want more structure in your weekly training, these resources are designed to help you move with purpose and understanding.


Thanks for being here — I hope these programs bring structure, clarity, and a renewed sense of motivation to your training.



Coaching & Plans

Coaching for HYROX athletes and runners.


PREMIUM COACHING

Personal coaching with an individual plan, ongoing adjustments and feedback.

Blog Posts

Do you need more variety — or more consistency?
One of the most common mistakes I see as a coach is that people change their training plan as soon as it starts to feel “easy”. Even when things are clearly moving in the right direction. But that phase is often exactly when you should keep going. W...
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HYROX Stockholm – a few thoughts after the race
I went into the race with a fairly relaxed mindset — I’d take it as it came. I knew it was going to be extremely tough, but I also noticed I didn’t have that same uncompromising drive to push every second that I normally do in PRO. During the run, t...
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Showing up still counts - Keep stacking those small wins.
Something I’ve been thinking about more and more — in my own training and in conversations with runners and HYROX athletes — is how easy it is to slip into two extremes. Either we push harder, optimise more, and squeeze the schedule tighter… or we f...
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A small shift I’ve noticed in my own training lately
With a Hyrox race coming up this Sunday, I’ve noticed something that feels different — and honestly, a bit unexpected. What stood out was how calm I feel around everything leading into it. The race is in the evening, which is new for me. I’ve spent ...
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Do i actually need to analyze my running technique?
Earlier this week after a HYROX class, one of the participants asked me if I thought he should analyze his running technique. My first instinct was a simple yes — why not? But almost immediately after that, the answer became less obvious and the que...
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Five Mobility Drills for Runners & HYROX Athletes
A warm-up doesn’t need to be long — but it should prepare your joints and movement patterns for the training ahead. These five mobility drills focus on hips, back and glutes, making them useful before both running sessions and HYROX-style training. ...
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As Race Day Approaches
Many of you have probably signed up for one or more races this winter. For some, it’s a clear goal to work toward; for others, it’s simply something enjoyable to have in the calendar. Often, it’s a bit of both. Having a race planned can make trainin...
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The Smallest Possible Starting Point
Lately I’ve been trying to shift one small thing in how I approach my work and my days. Instead of asking myself: ”What system should I use next? The next plan, routine or structure I think will fix everything. I’m trying to ask: “What do I actuall...
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What keeps you going?
A few thoughts on what keeps you going when motivation just isn’t there. Last week, I wrote about waiting for the “right time.” This time, I want to talk about something most of us face sooner or later — those periods when the motivation just isn’t ...
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Waiting for the Right Moment
A short reflection on why waiting for the perfect time often makes it harder to start. I was talking with a friend and client a few days ago about getting back into routines. We got stuck on something most people recognize: why does it always feel m...
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How strength training complements running — especially in the off-season
Many runners hesitate when it comes to strength training — not because they don’t see the value, but because it often feels far from what they actually want to get better at. You run because you enjoy running, not because you want to lift heavy weig...
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How plyometric training makes you a more efficient runner
Mileage and endurance will always be a cornerstone of running performance. But many runners overlook the elements outside of running that can make them more efficient. That’s where plyometric training comes in. Plyometric work develops your ability...
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How recovery shapes real progress in training
The biggest progress often happens between sessions — not during the hardest ones. I see it all the time, both in my own training and in the athletes I coach: progress rarely comes from pushing every run to the limit, but from giving the body time t...
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Insights on running, recovery, and HYROX — delivered every Friday. Short reflections, practical tools, and training ideas to keep you moving with purpose.