I was commuting from Seattle to Bellevue, a distance of about 11 miles. On a really perfect day, it could take 15 minutes. On a normal day it would take between 30-60 minutes. On a bad day it could take up to 2 hours. There were enough bad days that I had to plan everything around that 2 hour commute.
After switching to a job in the city, I knew the longest it would ever take me to get home was about an hour and 15 minutes, and that was if I walked.