1. Which pair of the following cities are the farthest apart? Even though the questions are written for a little variety, all ask for the FARTHEST distance. Knowing where these cities are is part of the quiz, but states or countries will be provided here and there for clarity. Algiers and Amsterdam Alice Springs and Anchorage Albuquerque and Andorra Amarillo, Texas and Asuncion, Paraguay

2. Again, which pair of cities are the farthest apart, traveling along a great circle (the shortest distance possible)? Think of a great circle as a plane intersecting the earth and passing through its center. Beijing and Beirut Butte, Montana and Bogota Boston and Brussels Bangkok and Bangor, Maine

3. Four more pairs of cities. Which are farthest apart? Cleveland and Caracas Chicago and Capetown Copenhagen and Carlsbad, NM Canton, China and Cairo, Egypt

4. The proverbial crow has to fly the farthest between which two cities? Dallas and Damascus Detroit and Dar es Salaam Denver and Dublin Douglas, Isle of Man and Djibouti

5. Bees take a direct route from their hives to their food source, too. Which is the longest great circle beeline between these four pairs of cities? Grand Junction, CO and Georgetown, Guyana Gabarone, Botswana and Gibraltar Hamburg and Honolulu Glasgow and Guatemala City

6. Flying the same kind of airplane at the same speed, say 500 MPH, which trip along a great circle route would take the longest between the named cities? You may safely disregard winds, etc. Helsinki and Havana Houston and Hong Kong Hanoi and Harare, Zimbabwe Hammerfest, Norway and Hamilton, Bermuda

7. Which of these pairs of cities are the farthest apart? Kuwait City and Kinshasa Kathmandu and Khartoum Kabul and Kansas City Kuala Lumpur and Kiev

8. Unless they are exactly opposite one another, there is only one great circle (also known as a geodesic circle) connecting any two points on the earth's surface. Here are four more pairs of cities. Which are farthest apart? Minneapolis and Monaco Madrid and Miami Mexico City and Manila Mecca and Moscow

9. Which of these four pairs of cities lie the greatest distance from one another along a great circle route? Perth, Australia and Phoenix Portland, OR and Paris Prague and Panama City Pretoria and Phnom Penh

10. Finally, since I live in Northern California, I am looking for the farthest city of the following four from San Francisco. This is a close one Tashkent Amman Sydney Lhasa