What Size Trail Running Shoe Should I Buy

When it comes to trail running, one of the most important things to consider is finding the right size shoe. As an avid trail runner myself, I know how crucial it is to have a shoe that fits perfectly to avoid discomfort, blisters, and potential injuries. In this article, I will guide you through the process of determining the correct size for your trail running shoes.

1. Measure Your Feet

The first step in finding the right size trail running shoe is to measure your feet accurately. Our feet can change in size over time, so it’s essential to measure them periodically. Use a measuring tape or a ruler and measure the length of your foot from the heel to the longest toe.

It’s important to measure both feet since they can differ in size. Take note of the larger measurement to ensure you choose a shoe that accommodates the longer foot. Additionally, consider measuring the width of your feet, as some trail running shoe models come in wider or narrower options.

2. Try Different Shoe Brands

Every shoe brand has its own sizing system, so it’s essential to try on different brands and models to find the perfect fit. Don’t rely solely on your previous shoe size as it may vary across different brands. It’s common to go half a size up or down from your regular shoe size, depending on the brand and model.

When trying on trail running shoes, wear the socks you typically use for running to ensure a proper fit. Walk around and simulate running movements to gauge the comfort and support provided by the shoes. Pay attention to any areas of discomfort or pressure points.

3. Consider Toe Room and Width

One important aspect to consider when choosing the size of your trail running shoes is toe room. Your toes need sufficient space to splay naturally when running, especially during downhill sections when your feet may slide forward. Ensure you have about a thumbnail’s width of space between your longest toe and the front of the shoe.

Moreover, take into account the width of the shoe. A shoe that’s too narrow can lead to blisters and discomfort, while a shoe that’s too wide may lack stability. Finding the right balance between toe room and width is crucial for a comfortable and supportive trail running experience.

4. Seek Professional Advice

If you’re unsure about finding the right shoe size or have specific foot concerns, consider seeking advice from a professional. Visit a specialized running store where the staff can analyze your gait, foot shape, and provide personalized recommendations. They can also assist in finding a shoe that suits your running style and the terrain you’ll be tackling on the trails.


Choosing the right size trail running shoe is paramount for a comfortable and injury-free running experience. Take the time to measure your feet accurately, try on different brands and models, and consider factors like toe room and width. Remember that everyone’s feet are unique, so what works for others may not necessarily work for you. By following these guidelines and seeking professional advice if needed, you’ll be on your way to finding the perfect fit for your trail running adventures.