We offer free return or exchange within 30 days. More please refer here.
We offer free shipping on all orders and the estimated delivery time is 6-15 working days.
APMA Seal of Acceptance
This product received the American Podiatric Medical Association (APMA) Seal of Acceptance, awarded to products found by the Association to promote good foot health.
Men's
| USA | 7 | 7.5 | 8 | 8.5 | 9 | 9.5 | 10 | 10.5 | 11 | 11.5 | 12 | 12.5 | 13 | 14 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| EUR | 40 | 40.5 | 41 | 42 | 42.5 | 43 | 44 | 44.5 | 45 | 46 | 47 | 47.5 | 48 | 49 |
| UK | 6 | 6.5 | 7 | 7.5 | 8 | 8.5 | 9 | 9.5 | 10 | 10.5 | 11 | 11.5 | 12 | 13 |
| CM SIZE | 25 | 25.5 | 26 | 26.5 | 27 | 27.5 | 28 | 28.5 | 29 | 29.5 | 30 | 30.5 | 31 | 32 |
Women's
| USA | 5 | 5.5 | 6 | 6.5 | 7 | 7.5 | 8 | 8.5 | 9 | 9.5 | 10 | 10.5 | 11 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| EUR | 35.5 | 36 | 36.5 | 37.5 | 38 | 38.5 | 39 | 40 | 40.5 | 41 | 42 | 42.5 | 43 |
| UK | 3 | 3.5 | 4 | 4.5 | 5 | 5.5 | 6 | 6.5 | 7 | 7.5 | 8 | 8.5 | 9 |
| CM SIZE | 22 | 22.5 | 23 | 23.5 | 24 | 24.5 | 25 | 25.5 | 26 | 26.5 | 27 | 27.5 | 28 |
Drag horizontally to see more
Size Measuring Guide
A perfect fit for your ultra-marathon running shoes is important for comfort and performance. Follow these tips to measure your foot size at home:
General Tips:
- Measure your feet at the end of the day as they're at their largest due to swelling.
- In between sizes? One foot is bigger than the other? Take the larger size.
- It's best to measure every year. Your size could change over time.
What You'll Need:
- A piece of paper larger than your foot,
- A pen or pencil,
- A ruler or measuring tape,
- Socks of the thickness you'll wear with the shoes.
Steps:
- Stand on the paper in the socks you'll wear with the shoes.
- Use the pen or pencil to mark the end of your longest toe and the back of your heel. It's important to measure both feet as their size can vary.
- Match your measurements to our size chart to find the best fit. If you're between sizes, we suggest choosing the larger size for better comfort.
Featured
The C1 features a dual layer midsole, utilizing a generous layer of our sustainable CircleCELL foam above a rubberized EVA bottom layer that provides the stability you need to go beyond. CircleCELL is the same supercritical foam used in our award-winning H1, delivering energy return on par with PEBA-based foams, while providing double PEBA’s running lifespan.
Despite its wide, stable stance and dual-layer midsole, the C1 comes in at a feathery 9.4 oz / 267 g (US M9), because long distance performance shouldn’t weigh you down. Featuring a 42 mm stack height and 6 mm drop, the C1 is optimized to let you push your limits of speed and distance in training, so that race day comes easy.
The TUNEDFIT Dual Lacing System offers separately customizable fit for the forefoot and midfoot. Because we know that in the ultrarunner’s pursuit of distance, feet can swell and change shape, and having a shoe that can adapt to those changes on the fly can be the difference between minor discomfort and injury. With TUNEDFIT you can enjoy the ride and channel your focus to the miles ahead.
Gallery
Compare our models
Excelente comodidad para el entrenamiento diario.
I’ve been really happy with my Comfy running shoes. They’re lightweight, comfortable, and provide good cushioning for everyday runs and walks. The fit feels supportive without being too tight, and they’re comfortable even after wearing them for several hours. For the price, they offer great value and have held up well so far. I’d recommend them to anyone looking for an affordable and comfortable pair of running shoes.
Wow-comfortable
J'ai utilisé les Mount to Coast C1 sur l'Ultra Boucle des Ballons 2026 : 208 km parcourus en 32 h 20, essentiellement sur route et bitume, avec des températures dépassant les 40 °C.
C'est tout simplement la première fois que je termine un ultra de cette distance sans aucun épanchement de synovie au niveau des genoux. Pour moi, c'est un changement majeur.
L'amorti reste confortable du premier au dernier kilomètre, sans sensation d'affaissement. Malgré les longues descentes et les heures d'effort, la chaussure conserve suffisamment de dynamisme pour relancer lorsque les jambes répondent encore. J'ai même pu accélérer jusqu'à 4'40/km autour du 180e kilomètre, preuve que la chaussure ne devient pas "molle" avec le temps.
Autre point très positif : mes pieds sont restés dans un excellent état. Hormis deux petites ampoules liées aux nombreuses descentes, je n'ai ressenti ni échauffement important ni inconfort, ce qui est remarquable sur une telle distance.
L'usure après cette épreuve reste cohérente au regard des contraintes extrêmes imposées par plus de 32 heures d'effort.
Pour les coureurs d'ultra-route qui recherchent avant tout du confort, de la stabilité et une protection efficace sur très longue distance, cette chaussure mérite vraiment d'être découverte.
En ce qui me concerne, elle fera désormais partie de mes chaussures de référence pour les grands objectifs.
Comodidad, ligereza, amortiguación perfectas. Muy diferencial el doble ajuste de la cordonera ya que te permite adaptar el ajuste de forma total.
Muy cómodas para rodar. No son zapatillas de ritmo muy alto, pero se adaptan a todos los estilos y ritmos de carrera.
Me falta acumular Kms para ver si durabilidad, única duda que no puedo resolver de momento.
Y estéticamente muy bonitas!
Sin duda, un acierto.
Absolutely great long distance shoe. Straight out the box comfort and handles long miles easily. Comfort all day and the best toe box in a road shoes I’ve experienced. Alongside the H1 you don’t need anything else for long distance ultra life.
Scarpa solida e protettiva. Non un ritorno di energia esaltante ma non mi aspettavo diversamente. Dopo un po' di chilometri lintersuola si ammorbidisce quel tanto da renderle ancora più confortevoli.
Best shoe for all purpose
Comfort next level best shoes ever
Es una zapatilla increíble, muy muy cómoda y perfecta para entrenamientos tanto suaves y largos como con un poco de chispa.
Amazing shoe! Very comfortable and good for being on your feet for many hours. With tired legs, I can keep going for days in these shoes.
Increíbles, he corrido con ellas el Camino de Santiago durante 332 km, terreno asfalto, pista de tierra y alguna zona poco técnica de montaña. Y han sido el mejor acierto, añadir que no ha llovido y he tenido buen tiempo, con barro como es lógico sería otra cosa.
First buying M2C and I am impressed with the C1. I find it provides plenty of the cushioning I need as an 87kg runner without the marshmallow squish, however in the price bracket in which it sits I would expect no less. The two part lacing system is excellent and genuinly supports a better fit and easy adjustability on the move. Styling is very much an individual thing, but the C1 in white is very much my taste. The size chart is correct and it is best to measure your feet in cm and select your size accordingly. Will buy this brand again.
Muy buena zapatilla, como no podía ser después de haber probado las t1 y las h1.Muy contento de haber conocido está gran marca
I am now up to 50 miles in my C1’s and can honestly say they seem to come more alive as the miles have gone up.
As someone with a wider forefoot - it’s the first time in as long as I can remember that a shoe just feels instantly comfortable without any feeling in either side of my foot and don’t even think about them once they are on my feet.
Looking forward to wearing these for my upcoming 70 mile ultra marathon in a few weeks!
#ProjectTranscend
Love these shoes! I remember when the R1s first came out, and I got them just because of the innovative technology, and I had been looking for a shoe that could truly go the distance. They lived up to the ultra-distance name while the Lightcell was fresh, but inevitably packed out and weren't as enjoyable to run in after a couple of hundred miles. Although they were still capable. Plus, they lacked the responsiveness that I really enjoy in running shoes. And they were quite loud.
After trying the H1s, I fell in love with the Circlecell foam and had nothing but extreme comfort and responsive foam for hundreds and hundreds of miles. So when the C1s came out, I had to give them a go.
The C1's are truly the perfect mix of the R1 and H1, combining the best of both worlds. A thick cloud-like all-arounder that can really do it all. And it is still very lightweight for all that shoe! I have been able to use it at tempo pace, easy pace, steep incline, and decline. I have used it on the road, track, and even taken it on some light trails. Not very often that you come across a shoe that performs so well across the board and looks great at the same time! It's everything I wanted the R1 to be and more. The 7-degree offset in the midsole is honestly one of the most creative game-changing features to add stability that I've ever seen. Instead of a plate, which I'm honestly not a big fan of, this adds a great amount of stability that makes the shoe feel like a neutral and stability shoe at the same time. Without having the downsides of a stability shoe, if you enjoy a neutral shoe. And they are extremely quiet!
Overall, these are a great all-arounder that I don't see leaving my rotation anytime soon. Highly recommend!
