Absolute Location of Manitoba, Ellesnere Island, and Athabasca River?

Manitoba 55.0000° N, 97.0000° W, but keep in mind that it's a province of 250,116 sq miles (647,797 km²).

Ellesmere Island is at 79.8333° N, 78.0000° W.

The river is at 52.1678° N, 117.4306° W but is 765 miles long.