When you just can't get enough skiing and riding during the day, extend the action with an evening pass. Now, in addition to Echo Mountain and SolVista, Keystone lights up as the largest resort in Colorado to offer night skiing.

The A51 terrain park and 15 trails will stay open after 4 p.m. If you do choose the night, the runs are greens and blues, so use the time to practice your technique. Get your skis tuned. Wear extra layers.

Sharp edges are important as the snow is usually much firmer in the evening air if it hasn't snowed or been groomed since the night before. Use clear lens in your goggles. Don't drink alcohol during the ski or ride sessions. Alcohol takes a ski challenge to whole new level - ones your peers won't appreciate. Instead, bring a flask of hot chocolate or coffee and pack some handwarmers.

Some 192 member resorts host night skiing according to the National Ski Areas Association. Sunrise Ski Resort in Arizona, Park City Mountain Resort, Powder Mountain, and Brighton in Utah, Bogus Basin and Silver Mountain in Idaho, and Angel Fire in New Mexico, all offer skiing under the lights for those who just won't quit at the end of the day.