Sun Valley is built around two mountains, Bald Mountain and Dollar Mountain, and offers 121 runs across 2,054 acres (831 hectares) above Ketchum. Bald Mountain tops out at 9,150 feet (2,789 m) over a base of 5,750 feet (1,753 m), a vertical of about 3,400 feet (1,036 m), and that is among the biggest drops in the Rockies. Intermediates hold 42% of the terrain, beginners 36%, advanced skiers 20% and experts only 2%. A gondola, a six-pack, nine quads and several other lifts move people fast, so the fall-line runs are rarely queue-bound.

Baldy's skiing is about long, consistent pitches. Warm Springs is the signature, running top to bottom for the full vertical and taking afternoon sun, while Seattle Ridge and Greyhawk offer smooth groomed cruising. Limelight and the Christmas Bowl area deliver steeper, bumpier skiing for stronger skiers, and Ridge Run is a favourite for fast carving. Dollar Mountain handles beginners and freestyle riders with gentler slopes and parks. Sun Valley suits intermediates and confident advanced skiers who prize groomed runs and speed over extreme terrain, plus beginner families with a separate learning mountain.

The 2025-26 season at Sun Valley ran from 25 November 2025 to 19 April 2026, a roughly twenty-one-week season supported by average annual snowfall of around 220 inches. While this snowfall total is moderate compared with some Pacific Northwest resorts, Sun Valley's extensive snowmaking and grooming operations have long been central to its reputation for consistently excellent surface conditions. Season dates can shift slightly year to year.

Midwinter, from December through February, typically offers the most reliable natural snowpack across Bald Mountain's advanced terrain. As an Ikon Pass destination with a nearly ninety-year history, Sun Valley draws visitors from across the country, with holiday periods bringing the heaviest crowds despite the resort's reputation for well-managed lift lines. Weekday visits generally remain calmer.

Sun Valley's identity as North America's first destination ski resort continues to shape its seasonal programming, with a heritage of celebrity visits and Hollywood-era glamour still part of the resort's marketing and atmosphere. Dollar Mountain's dedicated beginner terrain supports significant ski school and family programming throughout the season. School holiday periods bring particularly strong demand for these family-oriented offerings.

Specific event programming beyond standard lift operations and ski school is not confirmed in available resort information. The resort's long-running association with author Ernest Hemingway, who lived in the area for two decades, remains part of the broader Sun Valley and Ketchum cultural identity through the winter season. Grooming quality across Bald Mountain remains a defining feature cited consistently by visitors.