How many miles is it from Moses lake to Ellensburg Washington?

256 miles taking this route:

1. Take I-5 SOUTH from Bellingham to I-90 EAST to SPOKANE via I-405 SOUTH to bypass SEATTLE (EXIT 182 off I-5 to get onto I-405 SOUTH ; EXIT 11 off I-405 to get onto I-90, follow signs to I-90 EAST to SPOKANE).
2. Take I-90 EAST to Moses Lake.