Click any empty Distance (km) or Tripoint to answer for that location
Tripoints are not repeated. A tripoint here can also be where two countries and a sea meet. If you arrive at another tripoint of the same countries, type 'same'.
Start at Norway+Sweden+Finland. Travel along the shortest border to the next tripoint and put in which sea you arrive. Continue along the coast to the nearest tripoint (shortest sailing distance) and put in which country you arrive at. Etc. If you're stuck early, you can type help to resume in the second column.