These elite #ThrowbackThursday photos are just too good not to share. Here's a countdown of our favorites from Instagram and Twitter.

10. Shalane Flanagan

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9. Alysia Montaño

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I couldn't wait until #tbt! My mum sent me this picture. I'm upset my bubble from the bubble gum I was chewing popped and got stuck on my face. What I love is that my parents took a moment in my distress to take a photo. That's love. #memoriesmonday

8. Ryan Hall

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#tbt My 1st senior US Nationals, ran the 1500m as a high schooler. Finished last in my heat. #keepBelieving pic.twitter.com/05n1rEtTZs — Ryan Hall (@ryanhall3) October 10, 2013

7. Molly Huddle

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6. Mo Farah

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Back in my days...!!

5. Lauren Fleshman

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#tbt First crush. "Sure I'll help carry these and not make eye contact."

4. Kate Grace

3. Jordan Hasay

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#ThrowbackThursday Dress up day, Pocahontas!!

2. Nick Symmonds

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3 yo me cooler than 30 yo me. Need to find this outfit... #TBT

1. Kara Goucher

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The start of an epic series. Yes, I had a boyfriend... And a mom- who allowed me to look like this. #tbt