A fan favorite for race day and daily training, the MTN Racer 4 offers rugged performance on technical trails. A 33 x 28 mm platform delivers underfoot cushioning and a protective barrier between you and the ground. Our new upper is fine-tuned for performance on technical terrain. The MTN Racer 4 now features our FKT insole, allowing for faster water drainage and added rebound, while the Vibram® Megagrip outsole provides reliable traction and durability when the trails get gritty.
Best For: Trail Running, Race
Stack Height: 33 mm (heel) x 28 mm (forefoot)
Heel to Toe Drop: 5 mm
Weight: 8.5 OZ (W7)
Gaiter Compatible: Yes
Rock Plate: No
Cushion: High
Underfoot Feel: Responsive
Support: Neutral
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Wide Toe Box
Secure Midfoot & Locked IN Heel
High Performance
Enhanced Efficiency
(01)
How Do I find My Size?
Women's
| US | UK | EU | Guide (CM) |
|---|---|---|---|
| 5 | 3 | 36 | 22 |
| 5.5 | 3.5 | 36.5 | 22.5 |
| 6 | 4 | 37 | 23 |
| 6.5 | 4.5 | 37.5 | 23.5 |
| 7 | 5 | 38 | 24 |
| 7.5 | 5.5 | 38.5 | 24.5 |
| 8 | 6 | 39 | 25 |
| 8.5 | 6.5 | 40 | 25.5 |
| 9 | 7 | 40.5 | 26 |
| 9.5 | 7.5 | 41 | 26.5 |
| 10 | 8 | 42 | 27 |
| 10.5 | 8.5 | 42.5 | 27.5 |
| 11 | 9 | 43 | 28 |
Men's
| US | UK | EU | Guide (CM) |
|---|---|---|---|
| 7 | 6 | 40 | 25 |
| 7.5 | 6.5 | 40.5 | 25.5 |
| 8 | 7 | 41 | 26 |
| 8.5 | 7.5 | 42 | 26.5 |
| 9 | 8 | 42.5 | 27 |
| 9.5 | 8.5 | 43 | 27.5 |
| 10 | 9 | 44 | 28 |
| 10.5 | 9.5 | 44.5 | 28.5 |
| 11 | 10 | 45 | 29 |
| 11.5 | 10.5 | 46 | 29.5 |
| 12 | 11 | 46.5 | 30 |
| 13 | 12 | 48 | 31 |
| 14 | 13 | 49 | 32 |
- The anatomical toe box gives your toes more room without making the shoe feel loose or too long. There is no need to downsize.
- If you're unsure of your shoe size and used the CM measurements in the table above - remember to start the measurement from the back of your heel (not under your heel pad) and add in a 1cm buffer to ensure a comfortable fit.
(02)
What's Special About Topo?
Topo Athletic builds shoes around the shape of a real foot. Instead of squeezing your toes into a narrow forefoot, Topo combines an anatomical toe box with a secure midfoot and heel fit, giving you more room where you need it without feeling sloppy.
What makes Topo better?
- Anatomical Toe Box – Your toes can spread naturally for better comfort, stability and balance.
- Secure Midfoot Fit – Locked-in through the middle of the foot without unnecessary pressure.
- Natural Ride – Our designs encourage an efficient stride while still providing cushioning.
- Lightweight Performance – Responsive foams and breathable uppers keep weight down without compromising durability.
- Purpose-Built Range – Whether you're running road, trail or ultra distances, each model is designed for a specific type of run.
They're ideal for runners who understand the benefits of a wide toe box and anatomical fit, but don't want to be limited in terms of performance or options available to them. They're for people who value running longevity AND performance, and runners who want more from each run.
(03)
What if I Order The Wrong Size?
No problem. You can do a fast size swap free of charge. See all the details on our returns page in the main menu.
(04)
When Will I Get My Order?
(05)
What If I Have Narrow Feet?
That's fine! Our shoes are designed to have a locked-in midfoot and heel, so you can still enjoy the benefits of a wide toe box without it feeling sloppy.
