| Longest River | Country | % Correct |
|---|---|---|
| Danube | Germany | 96%
|
| Danube | Austria | 95%
|
| Danube | Ukraine | 93%
|
| Danube | Bulgaria | 92%
|
| Danube | Croatia | 92%
|
| Danube | Hungary | 92%
|
| Danube | Moldova | 92%
|
| Danube | Romania | 92%
|
| Danube | Serbia | 92%
|
| Danube | Slovakia | 92%
|
| Rhine | France | 89%
|
| Volga | Russia | 78%
|
| Rhine | Switzerland | 72%
|
| Severn | United Kingdom | 70%
|
| Rhine | Liechtenstein | 69%
|
| Rhine | Netherlands | 69%
|
| Po | Italy | 65%
|
| Dneiper | Belarus | 41%
|
| Vistula | Poland | 39%
|
| Tagus | Spain | 39%
|
| Tagus | Portugal | 26%
|
| Elbe | Czech Republic | 22%
|
| Shannon | Ireland | 14%
|
| Gotaalv | Norway | 9%
|
| Meuse | Belgium | 8%
|
| Daugava | Latvia | 4%
|
| Torne | Finland | 2%
|
| Maritsa | Greece | 2%
|
| Neman | Lithuania | 2%
|
| Gotaalv | Sweden | 2%
|
| Vadar | Macedonia | 1%
|
| Bojana | Albania | 0%
|
| Neretva | Bosnia and Herzegovina | 0%
|
| Narva | Estonia | 0%
|
| Jokulsaafjollum | Iceland | 0%
|
| Bojana | Kosovo | 0%
|
| Bojana | Montenegro | 0%
|