My wife and I drove to the South Jordan rec center and did laps around the indoor track. The air temperature outside was 17 (F), and a brisk wind was blowing, such that the wind chill was probably 0 degrees or lower.
I felt fine while running laps, but every 5 laps, I sat down and took a brief break. I completed my workout with 17 laps. My wife did all walking and completed 20 laps. She walks faster than I jog/walk.