when the midwestern days grow shorter i turn to running to maintain my fitness. it seems this time every year work and family life also ramp up leaving less and less time to ride. i am pretty much down to riding two days a week, weekends only, by mid september.
plus, i like to run some short races, 5k and 10k, in the fall anyway so start to run 2 to 3 times a week. picking up mileage and pace as i go along. when december hits i start in with the trainer.
ymmv. later.