NeighborhoodsArapahoe Basin

Arapahoe Basin Opening Day & Closing Date 2026

Arapahoe Basin (A-Basin) is currently open for the 2025–2026 season.

It officially started the season on Sunday, October 26, 2025. Known for having one of the longest seasons in North America, A-Basin typically remains open well into the summer.
Key Season Dates & Info

When Does Arapahoe Basin Open?

Opening Day for the 2025–2026 season was October 26, 2025.

When Does Arapahoe Basin Close?

The projected closing day is June 14, 2026 (weather permitting).

Which Colorado Resort Has the Longest Ski Season?

Arapahoe Basin often operates 7–8 months While many Colorado resorts operate for 4–5 months, A-Basin, often remaining the only lift-served skiing available in the state during the early summer.

Arapahoe Basin has managed to stay true to its laid-back, down-home tradition while changing with the times. In the past four years, Arapahoe Basin - or the Basin, as locals call it - has made major on-mountain improvements.

Why A-Basin Wins Extreme Elevation: With a base at 10,780 feet and a summit at 13,050 feet, the air stays colder for longer, preserving the snowpack well into the summer heat.

The "North" Factor: Much of its terrain (especially the East Wall) is north-to-northeast facing, which shields the snow from the direct spring sun.

Arapahoe Basin opening day on Early November 2026
Will close first weekend in June 2026 (Weather permitting)

Snow Plume Refuge/Patrol Headquarters opened at the summit. In 2026, A new sports school building was added in the base area. Black Mountain Lodge at mid-mountain began to offer an upscale menu. But the biggest change took place in January , when the opening of Montezuma Bowl expanded the ski area by 80 percent, bringing the total skiable acres to 900.

A Basin has one of the longest ski seasons in North America. It often opens in October and remains skiable until June.

It is located up Highway 6 from Keystone. However, there are no homes or condominiums at Arapahoe Basin.

Many people stop at the natural springs, located on Highway 6 between Keystone and A-Basin, to fill up their water bottles with fresh drinking water.

Arapahoe Basin Trail Maps

Arapahoe Basin Weather

Arapahoe Basin Video

A Basin Summit County Colorado Breckenridge real estate for sale

When does Arapahoe Basin close