Pilot Wayne Prefontaine has visited (landed in) a total of 64 countries but have 176 countries yet to explore.
Albania
American Samoa
Angola
Anguilla
Antarctica
Antigua and Barbuda
Armenia
Aruba
Azerbaijan
Bahrain
Bangladesh
Barbados
Belarus
Bolivia
Bosnia and Herzegovina
Botswana
British Indian Ocean Territory
British Virgin Islands
Brunei
Bulgaria
Burkina Faso
Burundi
Cambodia
Cameroon
Cape Verde
Cayman Islands
Central African Republic
Chad
Christmas Island
Cocos (Keeling) Islands
Comoros
Congo
Congo (DRC)
Cook Islands
Cote D'Ivoire
Cuba
Czech Republic
Djibouti
Dominica
Ecuador
El Salvador
Equatorial Guinea
Eritrea
Estonia
Eswatini
Ethiopia
Falkland Islands
Faroe Islands
Fiji
French Guiana
French Polynesia
Gabon
Gambia
Ghana
Greenland
Grenada
Guadeloupe
Guam
Guatemala
Guernsey
Guinea
Guinea-Bissau
Guyana
Haiti
Hungary
Israel
Jersey
Johnston Atoll
Jordan
Kazakhstan
Kenya
Kiribati
Laos
Latvia
Lebanon
Lesotho
Liberia
Libya
Libyan Arab Jamahiriya
Lithuania
Malaysia
Maldives
Mali
Malta
Marshall Islands
Martinique
Mauritius
Mayotte
Micronesia
Midway Islands
Moldova
Monaco
Mongolia
Montenegro
Montserrat
Morocco
Mozambique
New Caledonia
Nicaragua
Niger
Nigeria
Niue
Norfolk Island
North Korea
North Macedonia
Northern Mariana Islands
Palestine
Panama
Paraguay
Philippines
Russia
Rwanda
Saint Helena
Saint Kitts and Nevis
Saint Lucia
Saint Pierre and Miquelon
Saint Vincent and The Grenadines
Samoa
Sao Tome and Principe
Senegal
Seychelles
Sierra Leone
Singapore
Slovakia
Slovenia
Solomon Islands
Somalia
Sri Lanka
Suriname
Sweden
Syria
Tajikistan
Tanzania
Thailand
Timor Leste
Timor-Leste
Togo
Turkmenistan
Turks and Caicos Islands
Tuvalu
Uganda
Ukraine
Uruguay
Uzbekistan
Vanuatu
Venezuela
Virgin Islands, U.S.
Wake Island
Wallis and Futuna