Mine is 30 miles and it took a good month or so before I finally figured out how to do it. Like you, I do long rides and I figured that this 30 miles round trip shouldn't be a big deal. Hell, it takes me 30 miles to get warmed up on my long rides. My biggest problem was the speed. I was trying to push it too hard. I dialed it back a bit and averaged about 15 mph and I started feeling much better. It only added a good 5-10 minutes to the commute also.