If that was me, I'd report him to HR. That's just as bad as going out to the parking lot and letting 3/4 of the air out of someone's tires. If the guy was a friend of mine, I'd at least tell him I'm reporting him to HR and let him sweat it out.

As for the rest of it, my commute is 17 miles each way, with only a few miles on a trail. When I first started it, I found that riding a significant number of miles, then taking a break of 8-9-10 hours, then riding that same distance back in the same day, is probably worse that riding 3x the commute distance (i.e., it was harder to ride 17 miles to work, work the whole day, then ride 17 miles home, than to ride 50 miles straight through). I think after an hour or two, the body goes into repair mode and to exert it again while it's still recovering from the commute in makes it harder to ride home. It is, however, something your body adjusts to. HTFU, you'll get used to it.

Also, if you're like I am, and the commute home is almost always into the wind, I feel for you. That part of my commute really sucks.


Disclaimer: I don't really commute to work by bike anymore; I found I prefer to be home earlier to do afternoon tasks and get face time with the wife, and ride later in the evening.