depending on the state but usually somewhere in between the states borders
This is false. The Cumberland Mountains, part of the Appalachians, meet in the area of these three states. The Rocky Mountains are located in the western United States, including Arizona, Utah and Colorado.
Yellowstone National Park borders Wyoming, Idaho, and Montana.
The Atlantic Ocean borders the eastern United States and the Pacific Ocean borders the western United States, and the Arctic Ocean borders the north coast of Alaska, which is also part of the US.
Canada
Technically, the saddle of the gap is on the border between Virginia and Kentucky. The town of Cumberland Gap is in Tennessee, about a quarter-mile to the southeast. The Cumberland Gap National Historical Park encompasses area in all three states.
The answer depends on what kind of borders you are asking about. Almost every country has at least three borders if you include such borders as those between governmental divisions such as counties, states, provinces, territories, etc. And there are land borders and water borders.
Nicaragua is located north of Costa Rica. The country of Panama also borders Costa Rica to the south. All three countries is located in South America.
The Central Virginia Bank has three branches in Virginia. One is located in Richmond, Virginia which is the main branch. The other two are located in Powhatan and Cumberland.
Italy, France, and Switzerland
Massachusetts, this is quite simple if you pay attention to how New York Borders Three States, and Massachusetts is the only one that is bordered by 5 states, unlike the other three states. If you have a Map you can test this out for yourself, keep in mind the Borders are touching. - The Brain of a Tibbs
United States! (Arctic, Pacific, Atlantic)