| Starting Letter and Length | River | % Correct |
|---|---|---|
| Y- 1,980 miles | Yukon | 100%
|
| T- 569 miles | Tanana | 44%
|
| K- 724 miles | Kuskokwim | 41%
|
| S- 313 miles | Susitna | 33%
|
| K- 500 miles | Koyukuk | 22%
|
| P- 569 miles | Porcupine | 19%
|
| C- 348 miles | Colville | 15%
|
| I- 500 miles | Innoko | 11%
|
| N- 420 miles | Noatak | 11%
|
| S- 335 miles | Stikine | 7%
|