Crispy, crunchy, tender, flaky mathematical running fun.

Swag registration is sold out, but you can still join the fun with entry-only registration! You will get digital bibs and medals that you can print out to celebrate Pi Day in all its glory! All participants are also eligible for awards and prizes.

Every so often, fate grants us an opportunity for a once in a lifetime experience, never to be repeated. Bite into the tender, flaky crust of destiny and celebrate with hundreds of other irrational members of the human race and participate in the Pi Day 5K! The Pi Day 5K is a flexible alternative to traditional races—you can participate, regardless of where you live and can run on your own schedule (extra points however for those who run on 3/14/16). We ship you your swag and you run with friends, imaginary or real.


Officially recognized in 1988 but traditionally observed for millennia by fans of Archimedes and Paula Deen, Pi Day occurs each year on March 14th and is generally regarded as an opportunity/excuse for geeking out about math and excessive pastry consumption. The overlap of mathematical and baking culture is unparalleled for its significant digits and saturated fat content. Truly, a holiday for the masses, wandering in the desert of early spring after the glut of festivities in December. Fibonacci would approve!

PI DAY 5K (technically 5.05334 K):

To counter the marvelously tasty pastry consumption, go for a run! The Pi Day 5K is an opportunity for runners and math enthusiasts to celebrate Pi Day by covering 3.1416 miles (or 5.05334 kilometers for those adherents of the metric system) under their own power. That’s about it—‘tis a fun reason to run!

First off, you register for the Pi Day 5K. Online registration is currently open. Your registration will come with a sumptuously soft Pi Day 5K shirt you can wear with pride, plus a bib number and finisher’s medal (if you wear the medal before completing the run, you will burst into flames), all which you will receive the week before the run dates. Run the Pi Day 5K wherever you’d like (on your favorite local running trail, in your neighborhood, on a treadmill, in a fog, on a log, etc) between March 12th and March 15th. Once you have run, report your time to us to be eligible for marvelous prizes.


The Pi Day 5K shirt comes in gender specific sizing and is super soft, super comfy, and is ideal for so many activities—grabbing coffee with friends, casual Fridays, baking, staunching mortal wounds, or shopping for pie molds on Amazon! It’s made of a blend of cotton, polyester, and Oxford commas.

SUPER IMPORTANT NOTE: The t-shirts are fitted and run small (especially for ​ladies​), so if you want a comfy fit, SIZE UP!"


Behold... the official Pi Day 5K Finisher's Medal! Take a gander at this Masterpiece of Bling and anticipate that sweet day when you will receive your own and are crowned as "The Sultan of Swag".


And, lastly, you'll receive a customizable Tyvek® bib (so sturdy that you could eat your post-race pie off of it) with your very own race number to share in pictures, hang on your wall, or use to make an indestructable paper airplane or paper fortune teller!


Do you live with some short individuals that seem to follow you around everywhere? Well, they can participate in the Pi Day 5K run as well. The Kid registration option includes the same finisher medal and bib, along with a bright red shirt so you can easily keep track of them if they stop following you around.

Late registration is still open! We've extended the deadline for swag orders to 3/10/16. Due to massive amounts of pi-loving demand, swag is currently back-ordered and delivery may take 4 - 6 weeks after the event. In the meantime, all participants will receive downloadable, printable bibs and medals to celebrate Pi Day in all its glory!

Late Registration (US residents):

Late Registration (US, Canadian, and international residents):

Late Registration (Canadian residents):


Note 1: Charges will appear as "Gametiime" or "FitFam" on your credit card statement.
Note 2: US and Canadian orders will be sent by USPS Priority Mail, prior to the event. Due to international logistics, we cannot guarantee Canadian packages will arrive prior to event start.

As much as mathematical equations and delicious desserts are important to us, so is giving back. For the Pi Day 5K, we will be contributing $1 for every registration and any additional donations to IGNITE™ (Inspiring Girls Now in Technology Evolution)

IGNITE is a 501(c)(3) nonprofit based in Seattle which introduces school girls from grades 6-12 to technology careers via panel discussions, job shadowing, technology workshops, mentoring, and field trips throughout the school year to visit the work places of professional women in Science, Technology, Engineering and Math (STEM) careers.

We are thrilled to have the chance to give back and hope you will join us in making a positive difference.

Grow your Pi Day 5K team to level up! The leaderboard updates hourly, so check back often to see your ranking!

Rank Team Name Captain Members Level
1 #AccioPi Amy Hanich 134 Platinum
2 #runICOT John Yaglenski 42 Platinum
3 Sub-30 Club Jocelyn Sharp 22 Gold
4 Pi>5K Sarah Bauguss 16 Gold
5 Cutie Pi Abigail Wedeking 16 Gold
6 Liberty Middle School Pamela Purcell 14 Silver
7 Rocket City Mathletes 12 Silver
8 Griffins Love Pi (Seton Hill) Karissa Kilgore 9 Silver
9 Y-Peeps Steven Dowling 9 Silver
10 #TEAMDATA Karen Lopez 8 Silver
11 Team Ins π re Sheryl Place 8 Silver
12 Team Awesomeness Deb Greene 8 Silver
13 Pi-ranhas of CGMS 7 Bronze
14 PI.Etastic Lisa Minohara-Ramirez 7 Bronze
15 S.W.A.T.T. Sprinters, Walkers, and Trash Talkers 7 Bronze
16 Team Bestie Nancy Trejo 6 Bronze
17 3 Peeps 3 States Amy Blake 6 Bronze
18 Math Junkies Diana Bittle 6 Bronze
19 √-1 2^3 Σ π Katherine Moller 6 Bronze
20 Callisons Miraglya Callison 5 Bronze
Levels — Platinum: 25 members, Gold: 15 members, Silver: 8 members, Bronze: 4 members

Once you have ran your virtual run (between 3/12/16 and 3/15/16), you can report your results on the Pi Day 5K 2016 Participant Website to be eligible for awards! We'll send out the link closer to the event date!

Prizes and awards? Why of course we have those! What better way to cement your reputation as truly awesome? There are several categories of awards for the Pi Day 5K, take a look at just a smattering of them here:

Are you an educator looking for a fun way to get your kids excited about math? The Pi Day 5K welcomes groups of students and teachers to participate in this fun, math-focused event. Please contact us for more information and for group rates.

Is this a virtual run? You are CORRECT!

What is a virtual run? A virtual run is one that you do on your own time and on the course of your own choosing. We give you a timeframe to complete the distance, and you report your results digitally.

Why should I participate in a virtual run? The short answer would be because they are cool. Brad Pitt, Taylor Swift, and Christopher Walken all endorse virtual runs.* The more detailed top 4 reasons include:

Who can participate? Everybody and anybody! There is no age limit and there are no restrictions. So run, jog, walk, crawl (not recommended unless you’re a quadruped or really really odd), run alone, run in a group, run with your pet, it doesn’t matter. Just get out there and run!

Can I complete the run with a group? Yes! We even have an award for most members in a group run!

Do I have to complete the distance all at one time or can I break it up into different days? No you are not required to run your distance all at one time. Feel free to break it up into several runs if you need to.

When will I receive my t-shirt and medal? If you ordered before February 11, your t-shirt, medal and bib will be mailed a couple weeks before the event. If you ordered after that date, we'll try to get you your swag packages as soon as possible but it may take up to 4-6 weeks after the event to arrive (because we employ a fleet of crust-loving carrier pigeons that sometimes go on strike when we run out of pie).

Do the medals come with a ribbon? Yes! Every medal will come with a ribbon!

I don’t live in the United States, can I still participate? Yes! Anyone outside the US can participate and join the community by selecting the "entry only" option. Unfortunately, if you live outside the US and Canada, we do not ship swag to those locations currently. Registrations with swag outside of the US and Canada will be cancelled and refunded.

I live in Canada, can I get swag, eh? Yes again! We will try our best to get you your swag packages in time for the event, but we can't guarantee that it will arrive in time, due to shipping schedules to Canada.

*this statement unsubstantiated from any evidence, circumstantial or otherwise. But in our hearts we know it’s true.

Due to the upfront nature of event costs, we cannot offer refunds, transfers, or deferrals. Make sure that you are good to go when you sign up! All sales are 100% final.