R1
Road Running, Race
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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.
- TUNEDFIT Dual Lacing System for separate lace adjustment
- Dual-zone ZeroSag midsole inserts with little degradation during long runs
- LightCELL midsole base featuring excellent lightness and bounce
- GOFLOW midsole geometry to guide your stride
- Double-layered jacquard upper with 40% recycled polyester
- Recognized with APMA Seal of Acceptance for promoting 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.
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.
R1p up the Record Books
In the spring of 2024, before the shoe’s official launch, British ultrarunner Justin Montague took one pair of R1s to the northernmost point of Scotland to run the JOGLE, a multistage ultra to the most southerly tip of England. Over 17 daily stages he ran 854 miles (1,374 km) setting a time that was almost 40 hours faster than the previous record, and he broke each day’s individual stage record along the way.
That result was just a warm up. Since then, the R1 has guided athletes to countless personal, national and world bests, culminating in two of ultrarunning’s most prestigious records. First in spring 2025, US runner Meg Eckert covered 603 miles to shatter the women’s six-day world record. Then, less than a month later, Belgian endurance athlete Matthieu Bonne broke the 29-year-old 48-hour world record with 301 miles. Records are there to be broken and the R1 is here to R1p them up.
Experience the Consistency
To create the smoothest possible ride, Mount to Coast looked to the automotive industry to create ZeroSag, our groundbreaking midsole insert co-developed with BASF. Durable, comfortable and offering impeccable energy return at any temperature, ZeroSag guarantees extraordinary cushioning on the longest runs.
The Road to Enlightenment
LightCELL, our proprietary midsole base material, starts as a unique hybrid compound before being charged with pure nitrogen to create a supercritical foam. The result is a material that is 50 percent lighter than EVA, while offering 45 percent more energy return.
Stay in the Flow State
GOFLOW is our industry-leading midsole geometry, designed to keep your feet tracking from heel to toe. With GOFLOW, you can stay in that flow state for longer, and enjoy your natural stride.
In the relentless pursuit of distance, ultrarunners often encounter swollen feet. With the R1, your toes can relax and enjoy the ride thanks to our wide toe box and broad platform, and the TUNEDFIT Dual Lacing System offers customizable fit for the forefoot and midfoot separately.
The R1/R1R provides runners with the low weight required for performance, with all the protection they need to run day after day in the longest ultra challenges.
The double-layered jacquard fabric combines outstanding softness and perfect fit for your feet. And you can breathe easy in the knowledge we use 40 percent recycled polyester.
Compare our models
Our record-breaking race-day shoe loved by ultrarunners.
Long-distance / multi-day road races
8.5 oz / 240 g
8 mm
(Heel 35 mm, Forefoot 27 mm)
Wide toe box
LightCELL™ base + ZeroSag™ inserts
TUNEDFIT™ Dual Lacing System
Double-layered jacquard, 40% recycled polyester
A versatile daily trainer for stacking up the miles in comfort.
Long-distance training
9.35 oz / 265 g
10 mm
(Heel 36 mm, Forefoot 26 mm)
Standard
LightCELL™ base + ZeroSag™ insert
Traditional lacing
Jacquard engineered mesh, 100% recycled yarn
A versatile daily trainer for stacking up the miles in comfort.
Long-distance training
9.35 oz / 265 g
10 mm
(Heel 36 mm, Forefoot 26 mm)
Standard
LightCELL™ base + ZeroSag™ insert
Traditional lacing
Jacquard engineered mesh, 100% recycled yarn
A stability shoe powered by our groundbreaking support solution.
Neutral / overpronation, everyday runs, walking
9.9 oz / 280 g
10 mm
(Heel 37 mm, Forefoot 27 mm)
Wide toe box
LightCELL™ base + 3D Archrail™ structure
Traditional lacing
Circular knit
Awesome shoe. Super lightweight. VERY durable but still responsive. This is my THIRD pair. Zero complaints.
Just purchased my second pair of R1s after running 800 miles in the first. Basically runs the milage of 2 pairs, making it economical and eco-friendly, while also being exceptionally comfortable for the long haul. Definitely will be returning to buy another pair of R1s once I make my way through the 2nd
I wore a pair of R1s for what I called Project 200: 2 days, 200 miles...on the treadmill. Not only did I not change shoes, I never even took these shoes off over the course of 201.1 miles and 48 hours! I literally had 2 small blisters which were the result of the socks, the shoes held up incredibly well, I probably should have changed socks at some point.
Amazing shoe and one of the most comfortable road shoes I've ever put on.
I’m new to running, so do with that what you will. This is my third pair of running shoes, first pair of Mount To Coast. I absolutely love them. They solved many of the problems I was having with my previous shoes. The lacing system alone is worth it. They are light, fast (for me) and honestly they look spectacular. Their Clean aesthetics convey confidence when compared to the over-the-top nature of modern neon nightmare running shoes. They breathe great and feel light under foot over distances. I have Zero complaints, aside from the fact that they felt so good I tend to add miles to my daily runs. Not a bad problem to have.
The drives, on Las Vegas resorts, are busy. Sometimes, chaotic, and, diabolical…Hundreds of guests….Hundreds of cars…Ubers…Lyfts….Limos….All filled with luggage…I’m the doorman…Middleman, between guests, valet, bell persons, management….But…..THESE R1’S!!!!!
Let’s get to it: Light…The fuel toggle/lace system, is revolutionary…Usually one or the other….This has both, for customized performance/perfection….Comfortable!!..🇻🇨When I do have to run(for a car..for a cart…for a guest..), I can almost forget I’m wearing anything….MINIMAL!!…But, with avid attention, to detail…Yes, this is a work review, not a running review….But, it’s a POSITIVE review….Get out there!! And get out there, in these Mount to Coast R1’S!!! A+.
Ten outta ten…..Your tootsies will say “ahhhhhh. Thanks, pal…….”