1
general::
Phrase(s): (That’s the) way to go!
Inf. a phrase encouraging someone to continue the good work. • As John ran over the finish line, everyone cried, "That’s the way to go!" • "Way to go!" said Mary when Bob finally got the car started.
McGrawhill's American Idioms And Phrasal Verbs
2
general::
Well done, as in That was a great lecture? way to go! This exclamation of approval and encouragement originated in sports, addressed to athletes who are performing well. In the 1960s it began to be used for any kind of achievement.
American Heritage Idioms