Try blackjack 'til dawn. Or a cross-country run. There's more to do than you'll ever dream of. Fall Autumn, aka Indian Summer. Some days are hot.
Some days are cool.
Every day is vibrant. Ripe for hiking, biking, running, skating. Horseback riding along golden pathways, lined with aspen leaves and pine trees. How about savory picnics with a view from your choice of peaks. Prepare yourself for winter.