Win a family adventure to Alaska with all expenses covered by National Geographic and the "got milk?" advertising campaign.

The two groups have joined forces to offer the trip of a lifetime for four people to tour Alaska for seven days.

"Family Adventure Sweepstakes: Alaska fueled by Milk" is the title of the online contest that ends June 28. The guided trip will take the winner and their three guests from Fairbanks to Anchorage, Alaska, with plenty of exiting stops along the way.

The promotion encourages participants to "Fuel your family’s adventures by starting every day with milk – 8 grams of high-quality protein in each 8-oz. glass!"

A grand prize winner will be selected on July 1. For more information and to enter the sweepstakes visit the website.