Pilot Marek Paul has visited (landed in) a total of 89 countries but have 151 countries yet to explore.
Albania
Algeria
American Samoa
Angola
Anguilla
Armenia
Aruba
Bahamas, The
Bahrain
Bangladesh
Barbados
Belarus
Bolivia
Bosnia and Herzegovina
Botswana
British Indian Ocean Territory
British Virgin Islands
Bulgaria
Burkina Faso
Burundi
Cameroon
Cayman Islands
Central African Republic
Chad
China
Christmas Island
Cocos (Keeling) Islands
Colombia
Comoros
Congo
Congo (DRC)
Cook Islands
Costa Rica
Cote D'Ivoire
Cuba
Djibouti
Dominica
Dominican Republic
Ecuador
El Salvador
Eritrea
Eswatini
Ethiopia
Falkland Islands
French Guiana
French Polynesia
Gabon
Gambia
Georgia
Greenland
Grenada
Guadeloupe
Guam
Guatemala
Guernsey
Guinea
Guinea-Bissau
Guyana
Haiti
Honduras
Johnston Atoll
Jordan
Kazakhstan
Kiribati
Kosovo
Kyrgyzstan
Liberia
Lithuania
Macau
Malawi
Marshall Islands
Martinique
Mauritania
Mayotte
Micronesia
Midway Islands
Moldova
Monaco
Montenegro
Montserrat
Morocco
Mozambique
New Caledonia
Norfolk Island
North Korea
North Macedonia
Northern Mariana Islands
Palau
Palestine
Paraguay
Philippines
Puerto Rico
Qatar
Russia
Rwanda
Saint Kitts and Nevis
Saint Lucia
Saint Pierre and Miquelon
Saint Vincent and The Grenadines
Samoa
Saudi Arabia
Senegal
Sierra Leone
Solomon Islands
Somalia
South Sudan
Sudan
Suriname
Syria
Tajikistan
Tanzania
Thailand
Timor Leste
Timor-Leste
Togo
Tonga
Trinidad and Tobago
Turkmenistan
Turks and Caicos Islands
Tuvalu
Uganda
Uruguay
Uzbekistan
Vanuatu
Venezuela
Vietnam
Virgin Islands, U.S.
Wake Island
Wallis and Futuna
Western Sahara
Yemen
Zambia
Zimbabwe