This is a perfectly valid reason to like Ubuntu, and it mirrors my own reason for preferring Mint: familiarity with an OS UI. In my case, Mint Cinnamon is the closest I could find to the Win98 user interface. Back in the old days I also had Ubuntu, but then they switched to the Unity UI and I changed to Lubuntu. That went to the pits a few years ago, so I moved on to Mint. Just like you, I also have a preference for the UI, and I suspect that very many people choose a distro based on their UI preferences. That’s the beauty of Linux: plenty of options for everyone.
For running, get thin gloves that keep out the wind chill. Your body will heat itself up, including your hands, so all you look for is decent wind protection. I did some trail running in down to -10C, and thin running gloves were sufficient.
If you want bells and whistles, get gloves with reflective elements. In winter, chances are you’ll spend some time running in the dark.