I recently purchased a Specialized Dolce because I discovered that in order to save my hips I have to quit running and biking seemed like the perfect option. I'm 47 years old; I'm in the gym 4 days/week doing Crossfit and consider myself moderately fit. I've ridden my bike twice, the first ride I did 4 miles and the 2nd ride I did 10 miles. A nice run for me was 3-4 miles 3-4 times/week in addition to gym time. Since I'm brand new to biking and my interest lies in riding for fun and added fitness I'm trying to figure out how far I should be riding in order to keep from injuring myself since my body isn't used to being on a bike. So far everything I'm reading focuses more on training for endurance rides or racing. I wasn't really worn out at all after my 10 mile ride but my hips were pretty tender and my left knee was down right sore. I'm adjusting my saddle to address the knee issue and assume the hips were tender because they just aren't used to riding any distance. Any advice would be much appreciated!