It all depends on your comfort level. Biking and hiking are so much alike that you can use the same gear for one as the other. The only difference being more shorts, some tubes and tools. I don't mean a tool box full of them, just enough to get you to the next bike shop. I enjoyed the bike riding I've done because I was able to bring the crazy creek chairs and the pie i bought at the store and the left overs from eating at a resturant. One big difference is, you'll drink more water, but bringing the trailer or paniers or that extenda bike thing means you can bring more water... more of everything. And as for getting the weight up the hills, it's all about the gearing on the bike. I was pulling 80lbs in the bob and another 20 in the bags and I carried my bike up the steps from the C&O canal, rode across the railroad bridge and all the way up to the hilltop house hotel in harpers ferry. You just have to spin ...