Pilot Gerdin Arias has visited (landed in) a total of 109 countries but have 130 countries yet to explore.

Afghanistan

Albania

Algeria

American Samoa

Anguilla

Antarctica

Antigua and Barbuda

Azerbaijan

Bahrain

Bangladesh

Belarus

Bosnia and Herzegovina

British Indian Ocean Territory

British Virgin Islands

Brunei

Burkina Faso

Burundi

Cambodia

Cameroon

Cayman Islands

Central African Republic

Chad

Cocos (Keeling) Islands

Comoros

Cook Islands

Cyprus

Czech Republic

Denmark

Equatorial Guinea

Falkland Islands

Faroe Islands

Fiji

French Polynesia

Gabon

Guam

Guernsey

Guinea

Guinea-Bissau

Hong Kong

Iraq

Isle Of Man

Jordan

Kiribati

Laos

Latvia

Lebanon

Lesotho

Libya

Lithuania

Luxembourg

Macau

Malawi

Maldives

Mali

Marshall Islands

Mauritania

Mauritius

Mayotte

Micronesia

Moldova

Monaco

Mongolia

Montenegro

Montserrat

Morocco

Morocco

Mozambique

Myanmar

Namibia

Nauru

New Caledonia

New Zealand

Niger

Niue

Norfolk Island

North Macedonia

Northern Mariana Islands

Oman

Pakistan

Palau

Palestine

Reunion

Romania

Rwanda

Saint Helena

Saint Kitts and Nevis

Saint Lucia

Saint Pierre and Miquelon

Saint Vincent and The Grenadines

Samoa

Sao Tome and Principe

Senegal

Sierra Leone

Slovakia

Slovenia

Solomon Islands

Somalia

South Sudan

Sudan

Suriname

Syria

Taiwan

Timor Leste

Timor-Leste

Togo

Tonga

Turkmenistan

Tuvalu

Uganda

United Arab Emirates

Uzbekistan

Vanuatu

Vietnam

Wallis and Futuna

Western Sahara