Update: Congratulations to ilikecatsyep and mzamethystcrow! You've each won two marathon passes. Check your email for details on how to claim them.

Original post: Next Thursday, May 2, the Harkins theater in Northfield is celebrating the release of the third Iron Man movie with a Tony Stark-a-palooza -- and we have free tickets to give away. So if you're a fan of the Marvel hero, the hunk Robert Downey Jr. or even just large hunks of metal, continue reading for details on the marathon and how to get in for free.

See also: - Win day passes to Loveland Ski Area! - Amazon's new comedy pilots are full of flops -- with these exceptions - Adult eyes: Realizing how dirty Dirty Dancing really is, 26 years after my first viewing

Here are the marathon's showtimes:

- Iron Man (PG-13) - 1 p.m. - Iron Man 2 (PG-13) - 3 p.m. - The Avengers in 3D (PG-13) - 6 p.m. - Iron Man 3 in 3D (PG-13) - 9 p.m.

And here's what you'll get for going:

- Admission to all four movies - Free 2013 Harkins Loyalty Cup - Free small popcorn - Free commemorative The Ultimate Iron Man Marathon lanyard

To enter our contest:

1. "Like" us on Facebook, which you can do right here. (Note: If you're already following us on Facebook, you're already eligible to enter; proceed to step two.)

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2. Sign in to Livefyre and leave us a comment below with your e-mail address, and your favorite superhero.

3. Then, check back tomorrow to see if you've won.

4. Sit back and relax. Good luck!