Figuring out what to wear during winter can be a tricky task. If you underdress, you’ll be cold, and if you overdress, you’ll sweat too much, which can also lead to being cold. The best way to dress for cold weather running is to use a layering system. This is where you’ll use different layers depending on the temperature, wind, or precipitation. A three-layer system would be a base-layer, mid-layer, and jacket. A good rule of thumb is to dress for 10 to 20 degrees F warmer than the actual temperature. While you may be cold for the first 10 minutes or so, you’ll be more comfortable and avoid overheating as you warm up throughout your run.