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Chicago's Original Winter Half Marathon! F^3 is a grassroots organization started by a group of runners who like to run and have fun together.

We host Chicago's ORIGINAL 1/2 marathon in January!

10/22/2026

Do you have a winning costume this year? Give us a hint in the comments without giving away the answer. 🧟‍♀️🧛‍♀️👽

10/20/2026

Edward waited over 100 years for Bella. You don't have to wait that long to register. 🧛‍♂️💀

Don't let the 2026 H^3 Halloween Half & 5K be the one that got away. Grab your running buddies, pick your distance, and register today!

Because unlike Edward and Bella's relationship, this decision doesn't have to be complicated. 🩸🏃‍♀️

The Haunted Halloween Half Marathon & 5km is on Sunday October 25, 2026. It includes the following events: H^3 Half Marathon and H^3 5k.

10/15/2026

The 18th annual F^3 Half Marathon & 5K is ready.

Are you ready for it?

Register by Saturday at midnight using code FAMOUS18 for an 18% discount!

Lock it in now.

The 18th Annual F^3 Lake Half Marathon & 5k is on Saturday January 30, 2027. It includes the following events: Half Marathon and 5k.

10/13/2026

This October, the H³ Half Marathon is back, and we’re putting a little more bite into race day.

13.1 miles. Halloween weekend. One finish line waiting for you.

The only question is: Do you have the guts? 🦇

🎃 H³ Half Marathon & 5K
📅 October 25, 2026

Register now and start training for a bloody good time.

The Haunted Halloween Half Marathon & 5km is on Sunday October 25, 2026. It includes the following events: H^3 Half Marathon and H^3 5k.

10/09/2026

That “quick” trip to the grocery store is unbearable, but a 13.1-mile run in Lincoln Park on a brisk Chicago morning?

That’s our kinda fun. 💙

Register now for H^3 and F^3, and maybe go to the store tomorrow.

10/06/2026

Did you wake up today and decide to start running? 🏃‍♀️🏃‍♂️🎽💨

Here are some tips to help you get started and set the pace for long-term wins.

Bonus tip: registering for a half-marathon is half the battle.

We can help you get there.

Full article here: https://bit.ly/4zfgecD

10/02/2026

🧛 THE 2026 H³ SWAG HAS RISEN.

This year’s vampire theme is coming to life, and the swag has some serious bite.

Sink your teeth into this year’s H^3 race gear and finisher medal, featuring our bloodthirsty vampire design. Because if you’re going to survive 13.1 miles, you deserve something worth showing off afterward.

The swag is ready. The vampires are waiting.

Register for H^3 and come run with the creatures of the night. https://tr.ee/w0ORBxhpBq

09/22/2026

That awkward moment when your running buddy asks if you registered before the price increase… and you suddenly remember you forgot. 😬

Don’t be THAT runner! Register for the H^3 Halloween Half & 5K and the Annual F^3 Half Marathon & 5K before prices go up after Sept. 25, then tell your friend to do the same!

Your future self (and your wallet) will thank you. 🧛🏃‍♀️

Right here, right now: https://bit.ly/4qOYuS5

09/18/2026

Which one do you identify with the most?

It’s definitely #5 for us.

09/15/2026

This Halloween, trade your cape for running shoes and sink your teeth into 13.1 miles at the H³ Half Marathon. 🩸

Come for the miles.
Stay for the Halloween vibes.
Leave with the bragging rights.

Because anyone can run a half marathon, but it takes a special kind of runner to do it with a little bite. 🦇

🎃 H³ Half Marathon
📅 October 25, 2026
🏃 Costumes Welcome

Ready to embrace the suck? Register now. https://tr.ee/w0ORBxhpBq

Address

Chicago, IL

Website

https://runsignup.com/Race/IL/Chicago/F3LakeHalfMarathon5k

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