I had a few different commutes in my life.
Once I worked in a company 20km away and had to drive 45min by bus through the countryside every day. It was especially bad in summer, when the bus was full and I had to stand the whole time between sweaty people. Then I arrived at one side of the city and had to "climb" to the top of the hill on the other side of the city.
Then I worked at a hospital, but it was in the woods outside of the city, so I had to get there by bus, took 20min, so a bit better than the last job. Not much walking involved, but the busses were often rather cramped.
Later I moved into a bigger city and worked in a smaller city that was about 20km outside, but since it was a metropolitan area, I didn't have to drive by bus, just 10min train. Also, not much walking. I could get to the office between 10 and 11, so I didn't end up in full rush-hour trains.
Now I do contract work from home. Every other month or so I travel to customers for meetings, but most of them we do via Skype. All my customers were ~3 train hours away from me, so it wasn't much of a problem.
I also worked as a paper boy for 2 years, where the work included the commute, worst time ever :D