Hills of PV

This weekend I took my bike out for my longest ride to date.
Saturday was a scheduled group ride, which was cancelled due to rain and wet roads. I was ready to ride and it was only a light rain in PV. So I ended up taking a quick 1 hour ride, followed by a 90 min run. The run felt good and I'm pretty much recovered from my marathon the week before.
Sunday, an Ironteammate and I went out on a 3 hour ride through the "hills" of PV. Some portions had an 8% grade, but going downhill at 40 mph is an adrenaline rush and makes the uphill portions worthwhile. We covered 48 miles through hilly terrain. Not bad. My legs felt great, but my butt was sore. I don't know how my butt will survive being in the saddle for another 3 to 4 hours on race day.
Unfortunately, I never made it to the pool this weekend. I'll try to go out today after work. Running and Cycling are my strong points, and I can go out anytime for a run or bike workout. Swimming is another matter. It takes that extra effort to get to the pool. If any readers have advice for me on the swim workouts, I would like to hear them. How does one get motivated for swimming? How do you stay interested during those endless drills and repeated laps? I don't get the runner's high or the adrenaline rush I get with cycling. Usually its trying to avoid taking in too much pool water and trying to keep a mental note of what lap I'm on. Real boring stuff.