I try and get an hour of elliptical exercise 4 days a week and ride 20 miles for three of those days. The remaining 3 days of the week are reserved for longer rides and rest. With the days getting shorter I am not going to be able to get my cycling miles in. I was wondering what would be better exercise elliptical for 1 hour or cycling for 25 miles.

The reason I ask is that I am considering exclusively riding my bike for 25 miles when I get home from work and then go to the YMCA after dinner and lift weights for 40 minutes.