United Airlines is giving 25 Mileage Plus members a million miles each, in honor of the 25th anniversary of the program.

Registration required. Thereafter, each “qualifying segment” flown between March 27 and June 16 enters you into the drawing. What’s a qualifying segment? It seems like any flight on United or United Express.

You can also enter without flying. Instructions, along with the complete legal mumbo jumbo, are here. One nice point: If you win, they also give you $5000 toward any tax liability you incur.

Go to http://www.united.com/25million to enter.