2 weekday rides per week this winter ; what to do

[jrstevens]

So my winter training schedule this year will permit me to get outdoors only twice during the week for roughly 60-75 min. I'll supplement that with 2 indoor training rides and 2 weekend rides of 2.5-3 hours. One day with a fast paced group the other solo and in the hills. My question is how should I train to make the most of those 2 short weekday rides outdoors. I am a 35 yo Cat 3 (07 will be my second year as a 3) in Colorado. Thanks for any input, advice, comments.

JS