Viakix Sizing Guide
Finding your perfect fit is easy! All Viakix footwear runs true to size, but we have specific recommendations based on the style you're choosing. Select your product type below for sizing guidance.
Use the links below to jump directly to the sizing information you need:
↓ Women's Sport Sandals ↓ Women's Hiking Boots ↓ Women's Trail RunnersWomen's Sport Sandals
Fit Overview
Our sport sandals run true to size and fit most foot widths thanks to adjustable straps and flexible webbing materials.
Sizing Recommendation
- Order your regular US shoe size
- Between sizes? Order one size down for the best fit
Women's Size Chart
| You Typically Wear | Order Sandal Size | UK Size | EU Size | CM |
|---|---|---|---|---|
| 6 or 6.5 | 6 | 3.5 | 37 | 24.1 |
| 7 or 7.5 | 7 | 4.5 | 38 | 25 |
| 8 or 8.5 | 8 | 5.5 | 39 | 25.8 |
| 9 or 9.5 | 9 | 6.5 | 40 | 26.6 |
| 10 or 10.5 | 10 | 7.5 | 41 | 27.5 |
| 11 or 11.5 | 11 | 8.5 | 42 | 28.3 |
| 12 or 12.5 | 12 | 9.5 | 43 | 29.2 |
Still Unsure?
Contact our customer care team - we'll help you find your perfect fit. No pressure, no blisters, just the right size for your adventures.
Remember: All Viakix footwear comes with our 30-day comfort guarantee on unworn products.
Women's Hiking Boots
Monterra Mid: Fit Overview
Length Guidance
The Monterra Mid fits true to size for most customers with a secure heel. We recommend ordering your normal athletic or sneaker size. If you're between sizes, plan to wear thick hiking socks, or have Wide (D) feet, size up ½ size.
Width Guidance
The Monterra fits Narrow to Medium feet best, and Wide (D) feet with a ½ size up.
| Foot Width | Recommendation |
|---|---|
| Narrow Feet (A/AA) | May feel slightly roomy. Pull laces through all eyelets and wear a medium-thickness sock for a secure fit. |
| Medium Feet (B/M) | Order your normal size. |
| Wide Feet (D) | Size up ½ size. |
| Extra Wide Feet (E/EE) | The Monterra will likely feel too tight. Consider waiting for our Extra Wide Monterra, coming early 2027. |
Women's Size Chart
Our sizes follow the Brannock Device standard used in shoe stores. To find your size, stand with your heel against a wall and measure to the tip of your longest toe, using your longer foot. If your measurement falls between two sizes, choose the larger size.
| US Size | UK Size | EU Size | Foot Length (in) | Foot Length (cm) |
|---|---|---|---|---|
| 6 | 3.5 | 36 | 9.0 | 22.9 |
| 6.5 | 4 | 37 | 9.2 | 23.3 |
| 7 | 4.5 | 37.5 | 9.3 | 23.7 |
| 7.5 | 5 | 38 | 9.5 | 24.1 |
| 8 | 5.5 | 38.5 | 9.7 | 24.6 |
| 8.5 | 6 | 39 | 9.8 | 25.0 |
| 9 | 6.5 | 40 | 10.0 | 25.4 |
| 9.5 | 7 | 40.5 | 10.2 | 25.8 |
| 10 | 7.5 | 41 | 10.3 | 26.2 |
| 10.5 | 8 | 42 | 10.5 | 26.7 |
| 11 | 8.5 | 42.5 | 10.7 | 27.1 |
| 12 | 9.5 | 44 | 11.0 | 27.9 |
Still Unsure?
Contact our customer care team - we'll help you find your perfect fit. No pressure, no blisters, just the right size for your adventures.
Remember: All Viakix footwear comes with our 30-day comfort guarantee on unworn products.
Women's Trail Runners
Ridge Rebels: Fit Overview
Length Guidance
The Ridge Rebels fit true to size for most customers with a secure heel and natural toe room. We recommend ordering your normal athletic or sneaker size. Available in half sizes for a more precise fit. Most customers do not need to size up, unless they have a wide foot.
Width Guidance
| Foot Width | Recommendation |
|---|---|
| Medium Width Feet | Order your normal size |
| Slightly Wide Feet | Order your normal size |
| Wide Feet (E-width footwear) | The Ridge Rebels may feel snug — consider going up ½ size |
| Extra Wide Feet (2E or 3E footwear) | The Ridge Rebels will likely feel too snug |
| Very Narrow Feet | These shoes may feel too roomy |
Women's Size Chart
Our sizes follow the Brannock Device standard used in shoe stores. To find your size, stand with your heel against a wall and measure to the tip of your longest toe, using your longer foot. If your measurement falls between two sizes, choose the larger size.
| US Size | UK Size | EU Size | Foot Length (in) | Foot Length (cm) |
|---|---|---|---|---|
| 6 | 3.5 | 36 | 9.0 | 22.9 |
| 6.5 | 4 | 37 | 9.2 | 23.3 |
| 7 | 4.5 | 37.5 | 9.3 | 23.7 |
| 7.5 | 5 | 38 | 9.5 | 24.1 |
| 8 | 5.5 | 38.5 | 9.7 | 24.6 |
| 8.5 | 6 | 39 | 9.8 | 25.0 |
| 9 | 6.5 | 40 | 10.0 | 25.4 |
| 9.5 | 7 | 40.5 | 10.2 | 25.8 |
| 10 | 7.5 | 41 | 10.3 | 26.2 |
| 10.5 | 8 | 42 | 10.5 | 26.7 |
| 11 | 8.5 | 42.5 | 10.7 | 27.1 |
| 12 | 9.5 | 44 | 11.0 | 27.9 |
Still Unsure?
Contact our customer care team - we'll help you find your perfect fit. No pressure, no blisters, just the right size for your adventures.
Remember: All Viakix footwear comes with our 30-day comfort guarantee on unworn products.