Resume Tips for Ivy League?

Any tips on how to do the resume? Harvard and a few others optionally allow me to upload a resume. I don’t want to seem pretentious but there’s NO way that all I’ve done can fit in the teeny - tiny space that Common App gives me.

I have won upwards of 50+ awards and have done 5+ different forms of community service. I have 7 awards for a single Science Fair project alone - and I want the schools to know what I’ve done, as well as unique features, such as my own non - profit, to name one.

Then again, my resume is 3 pages long and I don’t want to burden admissions officers down, I also understand that there are thousands of applications they need to get to.