About the only thing you can't do in Yosemite is surf. In addition to sightseeing, Yosemite is a great place to bike, ski, rock-climb, fish, and even golf.

Bicycling -- There are 12 miles of designated bike trails in the eastern end of Yosemite Valley, which is the best place to ride, since roads and shuttle-bus routes are usually too crowded and dangerous for bicyclists. Children 17 and under are required by law to wear helmets. During the summer, single-speed bikes (and kiddie trailers) can be rented by the hour ($10) or the day ($25) at Curry Village (tel. 209/372-8319). Year-round rentals are available at Yosemite Lodge (tel. 209/372-1208). Bike rentals include helmets for all ages.

Cross-Country Skiing -- The park has more than 350 miles of skiable trails and roads, including 25 miles of machine-groomed track and 90 miles of marked trails in the Badger Pass area. Equipment rentals, lessons (including excellent beginner lessons), and day and overnight ski tours to the Glacier Point Ski Hut ($120 to $550 per person per trip, depending on whether it is guided and the number of people) are available from Badger Pass Cross-Country Center and Ski School (tel. 209/372-8444; www.yosemitepark.com).

Fishing -- Several species of trout are found in Yosemite's streams. Information is available from the California State Department of Fish and Game (tel. 916/928-5805; www.dfg.ca.gov). There are also special fishing regulations in Yosemite Valley; get information at the visitor centers.

Golf -- There's one golf course in the park plus several others nearby. Wawona (tel. 209/375-6572) sports a 9-hole, par-35 course that alternates between meadows and fairways. Greens fees are $22 for 9 holes, cart included.

Horseback Riding -- Several companies offer guided horseback rides in and just outside the national park, with rates starting at about $64 for 2 hours, $85 for a half-day, and $128 for a full day. Yosemite Stables (tel. 209/372-8348) offers rides from Yosemite Valley, Tuolumne Meadows, and Wawona; it leads multiday pack trips into the backcountry (call for details). Yosemite Trails Pack Station (tel. 559/683-7611; www.yosemitetrails.com) offers rides just south of Wawona ($40 for 1 hour, $80 for 2 hours, and $140 for 6 hours).

Ice Skating -- The outdoor ice rink at Curry Village, with great views of Half Dome and Glacier Point, is open from early November to March, weather permitting. Admission is $8 for adults, $6 for children; skate rental costs $3. Call tel. 209/372-8341 for current hours.

Rafting -- A raft-rental shop is located at Curry Village (tel. 209/372-4386). Daily fees are $26 for adults, $16 for children under 13, and include a raft, paddles, mandatory life preservers, and transportation from Sentinel Beach to Curry Village. Be aware that swift currents and cold water can be deadly. Talk with rangers and shop employees before venturing out to be sure the trip you're planning is within your capabilities.

Rock Climbing -- Yosemite is considered one of the world's premier playgrounds for both experienced rock climbers and wannabes. The Yosemite Mountaineering School (tel. 209/372-8344; www.yosemitemountaineering.com) provides instruction for beginning, intermediate, and advanced climbers in the valley and Tuolumne Meadows April through October. Classes last from a day to a week; private lessons are available as well. Rates, which include all equipment, vary according to the class or program; lessons are about $150 to $175 a day, and guided climbs are around $300 per day for 1 person or $200 or less per person for 2.

Skiing -- Yosemite's Badger Pass Ski Area (tel. 209/372-8430; www.yosemitepark.com) is usually open from mid-December to early April, weather permitting. This small resort, located 22 miles from Yosemite Valley, was established in 1935, making it the oldest downhill operation in California. There are 10 runs, rated 35% beginner, 50% intermediate, and 15% advanced, plus a terrain park and tubing area, with a vertical drop of 800 feet from the highest point of 8,000 feet. There are five lifts -- one triple chair, three double chairs, and a cable tow. Full-day lift tickets cost $37 to $42 for adults, $23 to $37 for kids 7 to 17 (kids under 7 are free); half-day tickets are $30 to $34 and $18 to $30, respectively. Seniors 65 and over ski free Monday through Thursday. There are ski shuttles from Yosemite Valley and Oakhurst, as well as some great ski-and-stay packages.

Note: This information was accurate when it was published, but can change without notice. Please be sure to confirm all rates and details directly with the companies in question before planning your trip.