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    Colorado, Usa · Ikon / Mountain Collective

    Arapahoe Basin

    1,428 acres, 147 runs near Dillon. Colorado's first post-war resort, high-alpine terrain, Ikon Pass.

    Season 2025 - 2026
    Opens
    25 Oct 2025
    Closes
    14 June 2026
    Days open
    232
    Annual snow
    29ft
    The Overview
    MF
    Michael Fulton
    Melbourne-based skier and snowboarder with 50+ resorts across 5 continents. Specialises in Australian resorts and international resort comparisons.

    Arapahoe Basin's summit reaches 13,050 feet, dropping 2,530 vertical feet to a base at 10,518 feet across 147 runs spread over 1,428 acres near Dillon, Colorado. Terrain splits 49 per cent advanced, 24 per cent expert, 20 per cent intermediate and 7 per cent beginner, with average annual snowfall of roughly 350 inches. The resort carries Ikon Pass and Mountain Collective affiliation. Eight lifts, including four quad chairs and one six-person chair, serve the mountain alongside one double chair, two surface lifts and one t-bar.

    Arapahoe Basin, affectionately known as The Legend, holds the distinction of being the first ski area to open in Colorado after the Second World War, and its genuinely high-alpine, largely above-treeline terrain has built a devoted following among serious skiers. The resort markets Colorado's longest season, often stretching from late October into June.

    10th Mountain Division veterans Larry Jump and Sandy Schauffler, hired to survey Colorado's winter sports potential, founded A-Basin, with Jump investing his life savings of 25,000 US dollars. Local forestry professor Max Dercum and his wife Edna, who also owned Colorado's oldest guest ranch, the Ski Tip Ranch, joined the effort alongside Thor Groswold and Dick Durrance, purchasing an 80-acre parcel for 3,000 US dollars and opening the resort in December 1946 with a single mid-mountain rope tow after just five months of preparation.

    A-Basin was sold in 1972 to Joe Jankovsky, then to Ralston Purina in 1978, before Vail Resorts purchased the resort in 1996. Department of Justice antitrust action forced Vail to divest a year later, and Dundee Resort Development of Canada, now known as DREAM, acquired A-Basin in 1997. Adult daily tickets run from 79 to 139 US dollars depending on weekday or weekend timing.

    2,530ft
    Vertical
    147
    Runs
    1,428 acres
    Skiable
    29ft
    Annual snow
    Ikon / Mountain Collective
    Pass
    The Terrain

    147 runs across 1,428 acres skiable

    Arapahoe Basin spreads 147 runs across 1,428 acres skiable of terrain. It leans advanced at 49%, with 10 beginner runs to find your feet and 107 advanced or expert runs when you want to push.

    Terrain split
    147
    runs
    147 runs across 4 grades
    Beginner10 runs · 7%
    Intermediate29 runs · 20%
    Advanced72 runs · 49%
    Expert35 runs · 24%
    Time it right

    When to visit Arapahoe Basin

    The 2025-26 season at Arapahoe Basin ran from 25 October 2025 to 14 June 2026, an exceptionally long roughly thirty-three-week season, among the longest in Colorado, supported by average annual snowfall of around 350 inches. This marketed longest season reflects the resort's considerable elevation and reliable early and late-season conditions.

    Midwinter, from December through February, typically brings the most consistent conditions to A-Basin's advanced-and-expert-weighted terrain. As an Ikon Pass and Mountain Collective resort, A-Basin draws substantial visitation from pass holders alongside dedicated local skiers seeking its genuinely high-alpine character and famously late spring skiing season.

    The resort's above-treeline terrain and Montezuma Bowl expansion continue to draw experienced skiers throughout the season, particularly during the extended spring period when few other Colorado resorts remain open. School holiday periods bring some family visitation, though the resort's advanced-weighted terrain skews its visitor base toward more experienced skiers.

    Specific event programming beyond standard operations is not confirmed in available resort information. Since Dundee Resort Development's 1997 acquisition, A-Basin has continued building on nearly eight decades of history since its December 1946 founding as Colorado's first post-war ski area. The Legend's long season and high-alpine terrain remain central to its identity each year.

    Season 2025 - 2026
    25 Oct 2025
    Opens
    14 June 2026
    Closes
    232
    Days open
    29 ft
    Annual snow
    Getting there

    Getting to Arapahoe Basin, and where to stay

    Arapahoe Basin sits near Dillon, Colorado, along the Continental Divide, with a base elevation of 10,518 feet and a summit at 13,050 feet across a 2,530-foot vertical drop over 1,428 acres. This considerable elevation places A-Basin among the highest-elevation ski areas in North America.

    Dillon and the broader Summit County region offer substantial lodging, dining and services within a short drive of the resort. Denver, Colorado's largest city, lies within a reasonable drive as well, making A-Basin a popular day-trip destination for Front Range skiers.

    US Highway 6 provides direct access to the resort over Loveland Pass. Winter driving conditions on this high-mountain route can include significant snow and ice, and travellers should carry appropriate equipment given the pass's considerable elevation. There is no direct public transport service to the resort, though regional shuttle options connect from Summit County.

    Denver International Airport, roughly a two-hour drive away, is the primary gateway for visitors flying into Colorado, with A-Basin's proximity to Denver supporting strong day-trip and weekend visitation from the metropolitan area.

    Where to stay

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    Hotels and lodges near Arapahoe Basin, powered by Stay22.

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    Trail map & terrain

    Arapahoe Basin trail map↓ Download PDF
    Terrain split
    147
    runs
    Beginner7%
    Intermediate20%
    Advanced49%
    Expert24%
    1,428 acres skiable578 hectares
    Resort Stats
    Elevation
    Base10,518ft
    Summit13,048ft
    Annual snowfall
    29ft
    Season
    2025 - 2026
    25 Oct 2025 - 14 June 2026
    Trail coverage
    147 runs
    1,428 acres (578 ha)

    About Arapahoe Basin's trail map

    Explore Arapahoe Basin's full trail map with 147 runs across the mountain, colour-coded by difficulty and shown alongside the terrain split. Use it to plan a day that matches your ability, find lift-served pockets of your favourite grade, and see how the resort links together. Download the piste map (PDF) ↗

    More Arapahoe Basin intelligence: snow report, lift system, webcams, resort overview.