I used to overdress every winter run and end up sweating through all layers by minute 20. Now I use a simple system based on temperature bands and wind.
Brands I kept in rotation this season:
- Tracksmith
- Craft
- Smartwool
- Janji
7-13°C (45-55°F)
This range is where I made the most mistakes. I now wear:
- Tracksmith long sleeve
- Optional Janji vest for wind
That is usually enough after the first 10 minutes.
0-7°C (32-45°F)
Most common winter condition for my city. I use:
- Smartwool merino base
- Craft thermal mid
- Light shell only when wind is high
This setup keeps core warm while still breathing.
Below 0°C (32°F)
I add full layering plus gloves and ear protection early. If I wait until I feel cold, hands are already stiff.
Brand notes in real use
Tracksmith: best overall fit and comfort. Craft: reliable thermal function without huge bulk. Smartwool: stable temperature regulation and low odor buildup. Janji: useful utility details, especially in outer layers.
Mistake most runners repeat
People optimize torso and ignore extremities. For me, gloves and ear coverage decide whether a winter run stays enjoyable.
My rule now: start slightly cool, not warm. By minute 15, your body will thank you.
Morning decision rule I use now
I check three things before leaving:
- Real temperature
- Wind speed
- Session intensity
If pace is easy, I remove one layer. If intensity is high, I remove one layer again. Starting slightly cool prevents the "sweat trap" that ruins mid-run comfort.