Run with c.u.s.s.

Curious Ultrarunners Secret Society – Chicago trail races and running coaching

Upcoming Races

Backyard Nonsense

Saturday, September 26, 2026

8:00 am CST

3/6/12/24 hour

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Upcoming Races

Chicago Yeti 7-11 Hour Endurance Run

May 16, 2026

7:00 am CST

7 & 11 hours

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Upcoming Races

Childish Nonsense

Saturday, April 24th, 2027

7:00 am CST

5 mile/25K/50K/50 Mile Trail Race

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Upcoming Races

Fancy Nonsense

Saturday, October, 24th 2026

8:00 am - 50k | 9:00 am - 25k

5 mile/25k/50k

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Upcoming Races

Timely Nonsense

Saturday, September 12, 2026

7:00 am CST

3/6/12 hour

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Welcome to C.U.S.S. Running, home of chicago trail races where we take running just serious enough.

Running hurts and life is bizarre so why not usher in laughter. C.U.S.S. Running exists to bring a sense of whimsy, fun, and passion to running.

Chicago Trail Races & Running Coaching

  • Running coaching

    Want more than faster times? Whether it's your first 5k or your fourth 100-miler, we'll work on your body, your mind, and the stories that either fuel you or hold you back.

  • races

    Local races where you can show up as yourself. No pressure, just good vibes and fellow runners who get it.

  • Merch

    Gear that celebrates your authentic running self. From our OG designs to new swag monthly, get your fit.

  • Challenges

    Challenges that inject play back into your running. Because training should be fun, not just fast.

  • Official blog

    Content that keeps it real about running. Honest conversations about running with FREE coaching tips.

  • Policies

    Transparent terms, privacy protection, and the legal stuff. Don't like our policies, don't run our races.

    Read Policies

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Races

C.U.S.S. races are supportive, fun, and not very serious, at all. Every pace is welcome to hit the trails and pathways to enjoy a well marked course, and some friendly miles.

Coaching

Whether you are postpartum, new to running, old to running, training for a physical running test, or want to PR your next race – We’ll get you there.

Why C.u.s.s Running

Run as you are - everyone fits in here.

Hi, I’m Ally, avid runner and founder of C.U.S.S. Running & Running Coach. I see running as fun and silly and I wanted to share that on a grander scale. After 8 years of operation, we are a thriving community of runners who are all willing to look at life with a smile even when it hurts. 

Chicago Races

Our Chicago trail races are fun, go as fast as you want when you want and as slow as you want when you want. Each race is small to ensure everyone gets a chance to blow bubbles.

Custom coaching

As a certified running coach and runner, I pride myself in helping clients reach their goals with laughter along the way. In-person coaching and virtual coaching are available.

Everyone belongs in trail and ultra running

Curious Ultrarunner’s Secret Society fully believes that everyone belongs in the Chicago trail and ultra running space, and all running spaces. Our policies are meant to reflect that and are ever revolving to ensure that everyone feels that they belong at our events, everyone except racist, homophobic, transphobic, sexist individuals.

BIPOC athletes

Athletes with disabilities

Walking athletes

Female athletes

New runners

Non-binary athletes

Aging athletes

LGBTQIA2S+ athletes

You. Yeah, You!

Read Our Polices

Join our newsletter

Our newsletter drops insider tips on Chicago trail races, training motivation, and the occasional ridiculous running story. No spam, just the good stuff that keeps your training interesting.

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