EUR
KM3
Three reinforced ribs beneath the arch increase torsional rigidity, improve the structural strength of the carbon plate, and deliver enhanced support and stronger propulsion through every stride.
- Find your size in the chart below.
- Scroll horizontally to see more sizes.
| US - Men's | 2.5 | 3.5 | 4.5 | 5.5 | 6 | 6.5 | 7.5 | 8 | 9 | 10 | 11 | 12 | 13 | 14 |
| US - Women's | 4.5 | 5.5 | 6.5 | 7.5 | 8 | 8.5 | 9.5 | 10 | 11 | 12 | 13 | 14 | 15 | 16 |
| EU | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 |
| CM | 22 | 22.5 | 23 | 24 | 24.5 | 25 | 25.5 | 26 | 27 | 27.5 | 28 | 29 | 29.5 | 30 |
| UK | 2 | 2.5 | 3.5 | 4.5 | 5.5 | 6 | 7 | 7.5 | 8.5 | 9 | 10 | 11 | 12 | 13 |
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.
Weight
US(M)7.5 : 7.23 oz (205 g)
Heel Stack
29.7 mm
Forefoot Stack
25 mm
Heel-Toe Offset
4.7 mm
HI-KNIT High-Strength Yarn Upper
Crafted with advanced HI-KNIT high-strength yarn and integrated Flywire technology, the upper delivers exceptional durability. Its streamlined, foot-hugging construction combines a lightweight, breathable feel with 360° airflow to help keep feet cool, dry, and comfortable.
HiCarbon Full-Length Shovel-Shaped Carbon Plate
HiCarbon fibers are layered and oriented in multiple directions according to the biomechanical demands of the forefoot and heel. Three reinforced ribs beneath the arch increase torsional rigidity and strengthen the carbon plate, delivering enhanced support and stronger propulsion while promoting faster energy return through every stride.
HiFoam∞ Dual-Layer “Dynamic Motion” Midsole
Engineered with HIRACER’s innovative midsole foaming technology, the foam features uniformly distributed, specially structured air cells that reduce midsole weight while enhancing shock absorption. It improves energy return, delivers a faster rebound response, and supports sustained performance over long-distance runs.
KPU Abrasion-Resistant & Non-Slip Outsole
Full-length KPU non-slip granules deliver enhanced wet-surface traction, superior abrasion resistance, and a secure grip, helping you move confidently through slippery conditions.
Very surprised, it such a good shoe. Grip is good. is very propulsive, Good！ This is a high CP value shoe
The color is exactly what I wanted, and the fit is just right. The carbon plate feels really stiff and powerful, giving me a strong push with every step.
