For me it's the same all year round!
Monday: pilates with swiss ball (core strength prevents injuries, so the physio told me)
Tues: body pump and spinning (1 hour each)
Weds: slow recovery ride (outside in the evening with lights, whatever the weather barring a hurricane)
Thur: 2 spinning classes back to back (effectively 2 hours intervals)
Fri: Rest
+a well deserved box of wine
Sat: 50+ mile road ride or 2 - 4 hr mtb ride, gets longer in the summer.
Sun: Rest - it is the lord's day after all
I feel spiffing as a result, but haven't really changed shape or lost weight particularly. The spinning class I go to is run by a seasoned roadie and it's absolutely brilliant. Everyone from the local road club who goes has posted a PB this season in the club time trial. I can keep up on club runs (there are only 2 women on the run), which is an achievement for me.