In celebration of their 20th anniversary, the Star Alliance is giving 21 people one million miles (or the determined equivalent, depending on the frequent flyer program). One set will be given out from each loyalty program in the alliance.

This giveaway is a little different than sweepstakes past, as it's not technically a giveaway. You have to earn your prize.
Here's how to enter the Mileage Millionaire competition:

Upload a picture of yourself (preferably on a blank/white background), as well as a picture of a "unique cultural experience" on the official competition website.

This contest is closed. We picked the winners and have emailed them requesting addresses, so if you entered check your inbox. Thanks to everyone for participating!

Generous reader Lien is donating four pairs of United Club passes that expire September 30, 2016–in one month–to four lucky winners (one pair to each winner.)

If you have a use for the passes between September 8th (to allow time for them to be mailed to you) and 30th of this month, comment on this post for a chance to win the passes.

United is giving away one billion miles to Untited Mileage Plus members in a sweepstakes. 

The only condition is that you are a United Mileage Plus member.
How to Enter the Sweepstakes
Between August 1, 2016 and September 30, 2016, you can enter:

1. automatically via purchases on your United Mileage Plus Explorer Card.

2. by logging in here on the billion mile giveaway homepage (not active yet, will be on August 1, 2016) and follow the instructions (fill out a form, I assume).