Dial-a-MapLost in the streets? Navigational aid is just a phone call away, with Telemap Navigation Services, a California-based company. Subscribers pay $24 a year and can call a toll-free number 24 hours a day to get directions. Callers give their location and destination; navigators have computer access to maps of more than 5,000 cities in the United States and Canada. For information: 1-800-843-1000.

Focus on CanyonlandsThe Canyonlands Field Institute heads out into the canyonlands of southeastern Utah in its one-day courses, multi-day workshops and tours, which examine the ecology, geology, wildlife and cultural history of the area. For details: Canyonlands Field Institute, P.O. Box 68, Moab, Utah 84532, (801) 259-7750. Bulgarian BargainsThe rate of exchange in Bulgaria has been increased from 2.5 Bulgarian levas to the dollar to 9.5, resulting in $55 luxury hotel rooms, $25 custom-tailored suits, three meals at moderately priced restaurants for no more than $6 total, 15-cent coffee, $5 train tickets for a round trip between Sofia and the Black Sea resorts, and other bargains. For more information: Balkan Holidays Ltd., (212) 722-1110. Dengue Fever AlertA mild form of dengue fever has broken out on Kosrae Island in Micronesia. Visitors to the island are advised by the State Department to use mosquito repellent during the day and to spray living quarters in the evening. Leptospirosis also has been reported on the island. For details, contact the Traveler's Health Section of the Centers for Disease Control, (404) 639-2572. TRAVEL TRIVIA If you could walk the equator around the full circumference of the Earth, how many miles would you have to walk? ANSWER BELOWTRIVIA ANSWER: 24,901.56 MILESEND NOTES FAIR WARNINGSMontana Dixieland Jazz Festival, Helena, Mont., June 20-24.

Finland's Midsummer Eve and Midsummer Day celebrations, nationwide, June 22 and 23. 29th annual New Mexico Arts & Crafts Fair, Albuquerque, June 22-24.

International Freedom Festival, Detroit, Mich., and Windsor, Ontario, June 22-July 4.

Ravina Festival, Highland Park, Ill., June 29-Sept. 2.