None, Colorado has no International borders.
As far as land borders, there are only two: Canada on the north and Mexico on the south.
Switzerland borders on 5 countries. Clockwise they are: France, Germany, Austria, Liechtenstein and Italy.
14 countries border China, they are:On the east:RussiaNorth KoreaOn the north:MongoliaOn the west:TajikistanKyrgyzstanKazakhstanPakistanAfghanistanOn the south:IndiaNepalBhutanMyanmarLaosVietnamTaken from a current question on the site:How_many_countries_border_China
Uzbekistan is not just landlocked, it's one of only two doubly landlocked countries in the world: not only does it not border any ocean, none of the countries it borders borders any ocean.
None surround it. But New Hampshire borders it.
Turkey borders Bulgaria and Greece to the West, Georgia, Armenia and Iran to the East, and Iraq and Syria to the South. Therefore, in total, 7 countries surround Turkey.
Brazil is the largest country in South America so naturally it borders many countries as well as the South Atlantic Ocean.
The Gulf of Finland and the Gulf of Bothnia surround Finland. These gulfs connects to the Baltic Sea which borders Finland, Sweden and other countries.
Madagascar is an island nation and has no land borders. The countries around it are Mozambique in Africa to the west, the Comoros islands and Mayotte (France) to the NE, and the islands of Mauritius and Réunion (France) to the east.
The Southern Ocean surrounds Antarctica. North of that ocean, you can find the Pacific, the Atlantic and the Indian. Countries border the Pacific, Atlantic and Indian. No country borders the Southern Ocean.
countries that surround France are :GermanySpainItalyBelgiumLuxenbourgSwitzerlandSeas that surround France are:Bay of biscaythe English channel