Race: UTMB (Ultra-Trail du Mont-Blanc)

Runner: Matt Urbanski (Team RunRun founder and coach)
Race Date: 08/29/2025
Location: Chamonix, France
Result: 29:55:38, 170th out of 1665
Strava link: https://www.strava.com/activities/15645195041
What aspects of the race did you like the most?
I just love the racing environment of UTMB. They organize it so well, the energy is amazing, and the setting is absolutely epic. I have run this race three times, and I want to keep coming back!!
I also love that after having been in the trail running community for so many years, I can go to this race and see so many people I know from all around the world!
Not so much – Aspects of the race that didn’t do it for you
The start. I’m just outside of the “elite” category so I don’t get a spot near the front of the race. Two years ago when I raced, I got there more than an hour before the start and sat out in the sun waiting. This year, I got there 30 minutes before and was in the middle of the crowd. It took me 2 minutes to push/get pushed to the start line, and then we walked out of town. I wasn’t feeling super competitive this year, but walking slowly amid tons of runners with selfie-sticks, rather than running this nice flat part of the course was frustrating. I think they need to have corrals based on bib numbers (which are based on UTMB Index ranking).
Weird factor – What’s the weirdest thing about this race?
I’m still a bit in awe at all the deli meat and cheese available at the aid stations. They don’t have gels, and the overall food selection is noticeably different from US ultras. I basically lived on Naak waffles and Naak sports drink for 30 hours!
Highlights of your race – What did you do well and enjoy about your race in particular?

I got out of trouble. I made a really big error on the climb to Col du Bonhomme: I didn’t layer up for the weather. It was raining, and I had on my rain jacket and rain mitts, but I didn’t put on more layers. By the time it was windy and snowing up high (at 2am!), and I knew I needed to get warm fast, my hands were too cold to function. I couldn’t get my vest off, let alone get it open, in order to get more warm layers out. Thankfully, they had a warming hut open at the top. It looked brutal in there with people shivering, crying, and just in total disarray – I was one of them, shaking violently for 30+ minutes.
I am proud that I eventually regrouped, got warm enough, got my gear on properly, and carried on to finish the race. But there was a brief period before that warming hut (which I didn’t know would be open to us!) where I was scared for my life, more than any other running event I’ve ever been in. But I got out of trouble and UTMB!
Lessons for others – Share your pro-tips on the race to help the next runner
- Get good at downhill running. There is so much downhill! Get good at running fast on steep long descents. That is a huge advantage.
- Be fit. The stronger a runner you are, the better you’ll do on the climbs and the various runnable sections.
- Know your gear. There’s a big required gear list, and while you might think it’s overkill, I needed all (well, almost all!) of it this year. Practice with it, know where it is in your pack, and be quick to use it! In training, simply practicing running with the weight of it all will be a big benefit, even if you never need to get into it!
- Relax and smile. It’s a really long race, and it’s really easy to get caught up early in the competition. Slap hands in St. Gervais and Les Contamines, soak in that crazy tunnel of people at the start of the big Col du Bonhomme climb. And then stay focused: it’s a long, long race!
Lessons you learned that will help you next time around
In future, I’ll be way quicker to get my cold gear on at any race where it might be getting cold!
It’s way more fun to be fit! I didn’t train well for UTMB this year. I was able to get by with good power hiking on the long climbs, and good descending skills. But it’s just a better race when you’re well prepared.

Most important course specific knowledge to know about the race
The last big section from Col des Montets to La Flégère is tough! You’re met with steep, big rocks, an up-and-down and then another long up, before you finally get to the last big up, which is a ski slope. It’s plain tough at this point in the race, so be ready for it!
Also, to me, that climb out of Trient is just a beast! So steep for so long!
Lastly, the rocky climb once you’re out of Champex-Lac is a pain. There are so many big rocks that it’s tough to find a rhythm (plus, I had my own special suffering going on through that section which didn’t help!).
Aesthetics – Is it a pretty course?
UTMB is one of the prettiest courses I know of. I just LOVE racing in Chamonix!
Difficulty – Is it a tough course?
Yes! With a 46.5-hour cutoff to cover 108 miles and over 32,000 feet of vert, it’s an awesomely difficult race!

Organized and well run – Did it feel like a well-oiled machine or were they flying by the seat of their pants?
YES! The best in the world. While the buses and the start still need work, UTMB is the best run race out there.
Competition – Is there a strong field?
YES! Again, the best!
Logistics – Does it require a special handshake, registration a year in advance, hotels all booked? Give us the low down on the nuts and bolts of making the race happen.

Know the game with the UTMB stones and the qualifying system. It’s not that tough to get into (as of 2025) – certainly not as hard as some people make it out to be! I got in with 4 stones via the lottery in my first attempt.
Lodging is expensive in Chamonix now. Be ready to pay up. But it’s such a great town and we love visiting each year!
Aid Stations – Standard fare or anything special to know about the aid stations in terms of what’s available or when?
If you like Euro-style aid stations, you’re good to go. Meat, cheese, bread… But for me (vegan), there isn’t much. I had gels ready at the 5 crew stops, along with Skratch carbohydrate and electrolyte drink. Otherwise, I relied on Naak waffles (cut into 1/4s – I grabbed 4-6 of them each at aid station) and Naak sports drink. I picked up some veggie broth a couple times too, but it was so hot that it took forever to drink, so I didn’t stick with that.
The hype and energy of the aid stations is awesome though!
Be warned: Les Contamines’ aid station is an absolute shit show! It’s so busy and so crazy with people because the race hasn’t spread out yet. It’s hard to find your crew, and they won’t even be allowed into the tent area until they know you’re close. Be ready for chaos there!
Weather and typical race conditions
It can be hot, it can snow, it can be everything in between. They have a hot weather required kit and a cold weather one – I’ve had both activated during my 3 times running this race. Be ready for anything!
Gear – Did you need anything special or is there anything you’d recommend for the next runner?
There is a HUGE required gear list for UTMB. I know it’s expensive, but it’s worth spending time and money to get high quality stuff. Once you have the good gear, make sure you know how to use it! Practice running with the gear in training too. Take the required gear list seriously: they do check it at couple aid stations throughout the race. This year, I had to show my 3 upper layers (cold weather year) and my emergency blanket.
Spectators – Is this a friendly course for your friends?
Yes and no. There are tons of spectators on course and it’s awesome! But it’s tough to get around as a spectator. All crew and spectators had to buy bus passes by early July this year (I didn’t do that!). Fortunately, I was able to secure passes for my crew in the final days before the race, but only for them, no one else. It’s a bit pricey for bus passes too, but my crew had a blast with it all. Summary: there are tons of people on course, but it’s also tough to get around, so plan ahead.

How’s the Swag?
It’s lean: finisher vest only, no medals. People come for the race, not the swag. The t-shirt was sized large this year. The men’s small was too big for me. 🙁
The Overall Score – How many stars do you give this race and do you recommend that others run it?
10 out of 10! I love UTMB, and I will want to do it again (even though I said – multiple times – I was done with ultras mid-race!)!!

Matt Urbanski is the founder of Team RunRun, as well as a coach. He enjoys coaching self-motivated runners to optimize training time, push limits, transition to ultras, podium, BQ, and other big challenges!