Yellowstone Safari Company (tel. 866/586-1155 or 406/586-1155; specializes in wildlife-biologist-guided trips in Montana, at Yellowstone and Grand Teton national parks, and along the Lewis and Clark Trail. Founded by biologist Ken Sinay -- he's been described as "Vesuvian in his enthusiasm" -- the company offers guide services for both individuals and groups. Using specially adapted vehicles and boats, their activities include single- and multiday safari-style expeditions to observe wildlife and explore the natural and cultural history of the area. Full-day trips include guides, transportation, binoculars, spotting scopes, food, and beverages. Rates depend on group size and the kind of tour, with full-day rates varying from $650 for one or two people to about $160 per person for seven people. A half-day safari is $99 per person. Advance reservations are required, the earlier the better.

Founded by Susan Eckert in 1982 and the first of its kind, AdventureWomen, 300 Running Horse Trail, Bozeman (tel. 800/804-8686 or 406/587-3883;, offers customized trips to just about anywhere in the world for active and adventurous women ages 30 and older. In Montana, the company guides hiking trips as well as skiing and guest-ranch trips. Rates for the weeklong outings start at $2,495 per woman.

In the guiding business since 1985, Off the Beaten Path, 7 E. Beall St., Bozeman (tel. 800/445-2995;, is another top-notch local guiding outfit. The company offers about a dozen trips throughout Wyoming and Montana each year, with an emphasis on Yellowstone and Grand Teton, with expeditions that run the gamut from family outings to wolf-watching. The trips range from 4 to 10 days in length, and prices typically run between $300 and $500 per day.

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.