A journey into "Cowboy and Canyon Country" has been planned for May 25 to June 1 by AFC Tours, 12702 Via Cortina, Suite 103, Del Mar, Calif. 92014. Stops will be in Zion, Bryce, Capital Reef, Canyonlands and Arches national parks, in addition to Goblin Valley, Newspaper Rock, Goosenecks of the San Juan River, Rainbow Bridge National Monument and Pipe Springs.

Activities include a sail on Lake Powell to Rainbow Bridge, a tour of Monument Valley, a visit to a Navajo hogan, the study of petroglyphs, a cruise in Colorado River Canyon and a tour of Glen Canyon Dam. Cost is from $979 to $1,053 per person, double occupancy. Round-trip air fare, round-trip home shuttle to airport, 14 meals, motor coach, accommodations and a tour manager are part of the price. For more information, call AFC Tours at (800) 369-3693.-0

ALASKA AND YUKON: A 13-day "Classic Alaska and Yukon Cruise Tour" is being offered beginning May 31 by Los Coyotes Travel, 8350 Los Coyotes Drive, Buena Park, Calif. 90621. An itinerary includes a three-night Inside Passage cruise, overland sightseeing through Canada's Yukon and Alaska, a narrow-gauge railroad ride and daytime excursions.

Cost is about $2,499 per person, double occupancy, including air fare from Los Angeles. Accommodations, motor coach, rail transportation and tour manager are part of the price. For more information, call Los Coyotes Travel at (800) 448-9566.

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UNDER MAYA SKIES: Guatemalan sites where the ancient Mayans conducted systematic astronomical observations and calendrical manipulations will be the focus of a tour being sponsored by the Extension program of the University of California, Los Angeles. Departing April 4 for two weeks, the trip will begin in Guatemala City with guided tours of archaeological museums, the 600-year-old Iximche, the highland village of Chichicastenango, the flower-filled town of Panajachel and the archaeological dig at Abaj Takalik.

An itinerary also offers Izapa in southern Mexico and Copan in northern Honduras, plus a flight to Ceibal, Dos Pilas, Arroyo de Piedras and a boat ride to Aguateca. Cost is about $2,850, including transportation, most meals and accommodations. Enrollment in the UCLA Extension program is $250 extra. For more information, contact UCLA Extension.

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ADVENTURE IN EUROPE: Stops in Madrid, Cordoba, Granada, Tangier, Fez, Marrakech, Rabat, Seville, Lisbon and Salamanca have been scheduled on a 17-day tour to Spain, Portugal and Morocco. The tour is sponsored by California State University, San Bernardino.

Cost is $2,695 per person, including round-trip air fare from Los Angeles, with Madrid airport transfers, accommodations, local taxes, service charges, baggage handling, hotel tips, continental breakfasts, 10 dinners, a ferry between Spain and Morocco, motor coach, guides and a tour director part of the price. The tour, which departs June 28, will be led by professor Robert Blackey, department of history. For more information, contact Cal State San Bernardino, Department of History, 5500 University Parkway, San Bernardino, Calif. 92407-2397.

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JAPAN BY BICYCLE: Only seven people are invited on a 16-day bicycle tour of Japan that visits Osaka, Kyoto, Ishikawa, Takaoka, Toyama and the Noto Peninsula. The group will go to homes, local museums, paper makers, crafts centers and temples. An itinerary has been designed to accommodate a wide range of cycling abilities. Bikes can either be brought along or rented. Departures have been scheduled for April 22, July 27 and Oct. 9. Cost is $2,896, excluding air fare of about $1,128. For more information, contact Asian Pacific Adventures, 826 S. Sierra Bonita Ave., Los Angeles 90036.

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HIGHLIGHTING HONG KONG: Trips to Katmandu, Nepal; Bangkok, Thailand, and Hong Kong are offered by DER Tours, 11933 Wilshire Blvd., Los Angeles 90025. An itinerary of the 13-day tours, which are priced from $1,998, includes four nights each in Hong Kong and Katmandu and three in Bangkok.

Highlights are the Temple of the Living Goddess, Dubar Square, Hanuman Dhoka Palace and Swayambhunath in Katmandu; cruises on longtailed boats and rice barges in Bangkok, and Victoria Peak, Repulse Bay and Aberdeen in Hong Kong.

The price includes round-trip air fare, accommodations, half-day sightseeing, motor coach, round-trip transfers, baggage handling at airports and hotels, and taxes and gratuities. For more information, call DER Tours.

Prices, dates or itineraries should be confirmed with airlines, cruise lines, tour operators or travel agents.