I printed out the north loop route map for the Chuckanut Century, I think for the most part it's flat riding. The ride starts in Bellingham, down to Ferndale, around Birch Bay and then returning to Bellingham. I'm doing this ride with my oldest son who is 33. I'm 53, and my physical conditioning needs improvement. I can pedal up a fairly steep hill without stopping and continue with my ride without having to rest, however I'm not breaking any speed barriers pedaling uphill. My bike is a 2012 specialized dolce elite compact, and it's a joy to ride. My usual rides are 20 miles, and about once a week I'll ride 30 miles. I seem to be able to pedal flat terrain without issues, but once I started adding hills it seems like my legs need acouple days to recover, so I've been alternating riding flat/hills. I live in the Fraser Valley just outside of Vancouver BC, and I have looked around for a age appropriate club in the area with not much luck. So if anyone lives around me and wants to get out and ride for fun let me know.