My goal this year is to do a century. I turn 50, so that would be a good acknowledgement. My training is way less than others, I'm thinking I should up it. Usually I do 20 miles on Sat and a little less on Sun, around 12.5 mph, mellow. This weekend I did a 33 mile ride, but I was in a hurry to get back. I rode with the "fast" group coming back, about 14-15 mph. I felt fine when i got home, but that afternoon I was headachey and so tired. I had run out of water and only had a banana to eat. The next day my legs were tired too. Too much, I suppose. So, I'm interested to see what others are doing. I also mix in 40 min most mornings @ the gym, and some mtn biking with my family. I'm thinking I'll add some evening rides and try to go faster.