Pi Day “Pi K” 3.14-mile Fun Run/Walk on 3.14 

Each year on Pi Day (March 14, aka, 3.14), Illinois Science Council hosts a Pi Day “Pi K” Fun Run to celebrate Pi in all its glory by running 3.14 miles (a little more than a 5K of 3.12 miles) in Pi K t-shirts and then enjoying circular treats (could be pizza, pie, bagels, donuts . . . lots of options!)  It’s a great start to the running season, no pressure, family-friendly, and a great time for all. Mark your calendars for Pi Day every year!  Details and registration at PiDayRun.org.

Info & Registration for the 2026 Pi Day Fun Run at PiDayRun.org.

Sign up here to be on our mailing list for other upcoming ISC events.

Want a reminder?

See Photos from Past Events

Runners at Old Town 2015 Cropped
Runners after running a 5k for science.
People in pi shirts representing science
Scientist workiing in a lab.

Science Is Everywhere. Donate Today.

We know you’re busy. Life is pretty hectic. But there are more ways to help. We’re an independent 501c3 verified nonprofit, and all our donations go to bringing science to the community. Help our mission continue to grow.

Donate Today