Bretton Woods, Waterville Valley, and Cranmore have a combined 195 trails, 12 terrain parks, and 893 acres serviced by 28 lifts. The three resorts are all within 2.5 hours of Boston, off Route 93, and are all within an hour's drive of each other.

The Threedom Anytime Pass serves them all and comes in various forms, with lower prices until Nov. 30. It is valid anytime all season long including at night at Bretton Woods and Cranmore. It costs $799 through Nov. 30 for adults 19 and up, then $849; $479 for teens 13-18, then $509; $429 for juniors 6-12, then $459.

The Threedom Limited Edition Pass is valid anytime all season at Waterville and Cranmore, and all season at Bretton Woods with the exception of Christmas Week, Martin Luther King weekend, and Presidents Week.

The pass also offers night skiing all season at Bretton Woods and Cranmore. It costs $699 for adults through Nov. 30, then $749; $419 for teens, then $449; $349 for juniors, then $369.

Visit the Threedom Pass site to purchase the pass online.