Crispy, crunchy, tender, flaky, mathematical running fun.

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 3/14/17). We ship you your swag and you run with friends, imaginary or real.

Pi Day 5K participants!

Pi Day:

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!

The swag is still baking in the oven! Check back soon for pics -- including medals, hirts, bibs, and other sweet goodies!

Curious to know how the Pi Day 5K shirts fit? Click here to see shirt measurements

(NOTE: First FitFam event? For ladies, shirts run small and we recommend ordering two sizes up from your typical size. For men and kids, shirts fit "true-to-size" and we recommend ordering your typical size.)

  1. 🎟 🙌 Signup solo or as a team
  2. 👕 🏅 Get awesome swag in the mail
  3. 🏃 🌎 Complete your activity
  4. 📸 👏 Share your results and photos
  5. 🎉 🏆 Try for awards and prizes

BONUS: ♥️ You'll support a great cause!

Have questions? See the FAQ


Registration Packages

Platinum Package - "The works!" (NEW - LIMITED QUANTITY!)

🇺🇸 🇨🇦
Shippable to US and Canada
  • Headsweats® premium performance hat (value: $26)
  • Cotton-poly blend t-shirt -- available in ladies', men's, and youth sizes (value: $25)
  • Custom zinc-alloy finisher medal (value: $20)
  • Tyvek® finisher bib (value: $5)
  • Free shipping on all items above (value: $5+)

  • FitFam Virtual Experience

Gold Package - Shirts, medals, bibs, and more! (MOST POPULAR!)

🇺🇸 🇨🇦
Shippable to US and Canada
  • Cotton-poly blend t-shirt -- available in ladies', men's, and youth sizes (value: $25)
  • Custom zinc-alloy finisher medal (value: $20)
  • Tyvek® finisher bib (value: $5)
  • Free shipping on all items above (value: $5+)

  • FitFam Virtual Experience

Silver Package - Like the Gold Package, but without the shirt!

🇺🇸 🇨🇦
Shippable to US and Canada
  • Custom zinc-alloy finisher medal (value: $20)
  • Tyvek® finisher bib (value: $5)
  • Free shipping on all items above (value: $5+)

  • FitFam Virtual Experience

FitFam Virtual Experience - Join the community, from anywhere in the world!

🇺🇸 🇨🇦 🌏
Available worldwide
  • Exclusive access to FitFam's amazingly inspiring & supportive participant community
  • Digital swag (printable / customizable bib, printable medal, and other surprises)
  • Inclusion in official Pi Day 5K digital photo album (via photos shared)
  • Eligibility to win Pi Day 5K awards and prizes (US and Canada only)
  • Onboarding and support throughout the event, to help you achieve your goals!

Registration Deadlines

Date Deadline
2/7/17 Early bird registration ends
2/28/17 Standard registration ends
3/19/17 Late registration ends

Swag Package Ship Dates

Due to their customization, Platinum, Gold, and Silver Packages are hand-assembled in waves. Find our estimated ship dates below.

Wave Order By Estimated Shipment Description
#1 2/16/17 2/24/17 Your swag package will be delivered before the event starts.

* Due to logistical factors, including clearing customs, shipments outside of the US may take longer than noted above. For questions, please contact us at

Early Bird Pricing

All prices are in USD. Prices will increase after February 7!

US Residents 🇺🇸

Gold Package: $31.50
Silver Package: $22.50
FitFam Virtual Experience:

Canada Residents 🇨🇦

Gold Package: $40.50
Silver Package: $31.50
FitFam Virtual Experience:

Outside US and Canada 🇺🇸🇨🇦🌎

FitFam Virtual Experience:

Have a group of 3 or more? Get 20% OFF now! Have a larger group? Email us!!

Proceeds from Pi Day 5K will go toward a deserving charity. More information on the charity coming soon!

Grow your Pi Day 5K team to level up! Check back hourly to see your ranking! 🏆

Once you complete your goal (between March 10-19, 2017), report your Pi Day 5K official results to be eligible for awards! You'll receive an email shortly before the event with instructions for reporting your results.

Example awards. Awards may differ for this event.

Prizes and awards? We have lots! What better way to cement your reputation of awesomeness than an award from Pi Day 5K! 🏆🎉

  • Most Team Members
  • Best Group Photo
  • Best Family Photo
  • Best Kid Photo
  • Best Swag Package Photo
  • Most Scenic Photo
  • Fastest 5K Runner
  • Fastest 10K Runner
  • Most Inspirational
  • And more!

Is this a virtual run / walk? You are CORRECT!

What is a virtual run / walk? A virtual run / walk is one that you do on your own time and on the road, track, or trail of your choice. We give you a flexible timeframe to complete your miles and invite you to the super-supportive Pi Day 5K community. Once you're done, you can report your results to our official leaderboard, shoot for awards and prizes, and feel fantastic knowing you just benefitted a nature conservation in a fun way.

Why should I participate in this virtual run / walk? Because what's better than getting fit, getting swag, and having a good ol' time in the Pi Day 5K!? And these reasons:

  1. You'll get some radically awesome, "that's what I'm talkin' about" Pi Day 5K swag to remember your achievements and a one-of-a-kind, zinger of an experience!
  2. Got a group of friends (or imaginary friends), a kid, or a dog that likes running? Someone you'd like to help get in shape? Sign up and add them on to your registration. This is a great way to get your crew out and about.
  3. A portion of every registration goes to support a great charity cause.
  4. A virtual run / walk is a fun, flexible, stress-free way to participate in an event. You get to run / walk on your own schedule AND connect with fellow participants around the country in our inspiring event community.

Who can participate? Everybody! There is no age limit, no restrictions. So run, jog, walk, or crawl (not recommended, unless you’re a quadruped or really really odd). Go alone, in a group, with your pet -- it's completely up to you. Just get out, be your best, and enjoy yourself!

My kid wants to participate, but I'm sitting this one out. Can I sign them up? Kids can be registered to participate on their own.

I have a group that wants to participate. Can we register as a team? Absolutely! Just select “Create a team” or “Join a team” on the registration website.

Can I complete the run / walk with a group? Yes! We even have an award for most team members, so spread the word and gather your posse!

Do I have to complete the distance all at once or can I break it up over multiple days? Split it up if you'd like!

When will I receive my swag in the mail? Depending on when you register, your swag items be mailed out a couple weeks before the event starts or shortly after. You'll even receive an email notification when it's been shipped.

Do the medals come with a ribbon? Yes, indeed! Every medal comes with a matching ribbon so you can wear or hang your bling!

I don’t live in the US or Canada, can I still participate? Sure can! While not eligible for prizes, participants outside of the US and Canada can join the fun and win awards with our digital package.

I have an APO/FPO address, can I signup for a swag registration? Affirmative! We're stoked to send swag packages to our military service members and their families overseas. (Note: Transit times are in the hands of USPS mail delivery and may vary by location.)

How can I sponsor this event? Thanks for asking! Please send us an email to

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

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