My wife and I are new to tandeming. We picked up our burley tosa less than 2 weeks ago, and have about 150 miles already and love to ride together. The biggest problem/question is that my wife is having soreness in the seat area, and its the most uncomfortable part of riding. My wife is brand new to cycling, so this is to be expected, but I was wondering how long it usually takes to break in a back side. A little history, I have been racing triathlons for 4 years and to me 112 miles on nearly no bike pad is the norm, so I am not one to understand a sore back side, in addition I am male, and I have no idea what it is like for females. We have a quality suspension seat post, and decent shorts, but am not sure about the saddle quality, so my wife thinks it may be the shorts or maybe the seat, but i think saddle time will do the trick, is this me being unpractical? She survived a very hilly 55 tonight, but the butt was sore for at least half the time, worse while we climbed. So general question, how long will it take on average for a female new to cycling be comfortable in the saddle for extended rides (50+ miles). Thank you very much for your time and input! Tandeming is great!