Getting the most out of casual family rides
So today I got home from work half an hour early, and decided to get a wee bit of fresh air, and force my kids to do the same. I threw their bikes in the car, dropped them off at their respective day care (4 year old; with training wheels) and after school (6 year old, no training wheels) facilities, went home and parked my car, and then rode my bike to pick them up. :) It's only, it turns out, a half mile loop, but it was fun for them.
For me, it was fun to ride with them, but frustrating too. I bought a Trek 7.3 instead of a road bike specifically so that I can do family-type rides. But oh, so slooooow! I think I maxed at 5mph, as I had to hang back with the little one. Not exactly a work out.
So my question is, how do I make the most out of that kind of ride? I cranked myself up to the biggest, hardest gear to at least give those muscles some work, but my cadence was sooo slow in order to hang with them. Would I have been better off dialing back to really light resistance and spinning faster/upping the cadence?
By way of background, I am training for my first sprint triathlon (11 mile bike portion; May 9th) and haven't really ridden a bike regularly since I was a kid. This bike is fairly new to me and I haven't started riding it for training in earnest just yet, but I have been doing hour long spin classes during the winter to build some bike endurance and strength.