Click the green button to start and enter the correct answers below
Source: Google Earth measuring tool
Names of states and postal abbreviations are accepted in either order (e.g. Pennsylvania Ohio, Ohio Pennsylvania, PA OH and OH PA would be valid answers). Borders on the Great Lakes are included. States with only one point in common (Utah-New Mexico and Colorado-Arizona) aren't considered as bordering. California-Nevada isn't included because their combined length is equal to that of California alone.