I'm annoyed that the days are already starting to get shorter. Hrmph. I've still got a few weeks of my "Hilly" commute to work, which takes 1.5hrs, but when I leave the house and it's dark/cold, I'm less likely to commit to that sort of thing.

Then I figure a few weekends of hilly rides, but even that is likely to drop off when it gets cold.

What's the best way to keep my hill fitness up over the next coming months? I'd like to not have to start from scratch in the spring again!

Fixie-commuting? Interval workouts? Any specific DVDs for the living room/trainer?

-- gnat!