"Running is a mental sport and we are all insane"

“Running is a mental sport and we are all insane” is a jocular one-line running saying that has been printed on many images. The saying has been cited in print since at least 2005.

14 July 2005, The Post-Standard (Syracuse, NY), “You don’t need to grow up as long as you grow” by Zandra Walton, pg. 23:
...runners that “running is a mental sport and we are all insane.”

Cool Running
Topic: Funny/favorite sayings writen in t-shirts.
fraggle15rock
posted Aug-15-2006 06:28 PM
(...)
Running is a mental sport. We’re all insane.

Google Books
The Gigantic Book of Running Quotations
Edited by Hal Higdon
New York, NY: Skyhorse Publishing, Inc.
2008
Pg. 205:
Running is a mental sport and we’re all insane.

Google Groups: Heven-or Hell
Re: {Heven-or Hell} Re: SLOGAN!
.(JavaScript must be enabled to view this email address)
2/25/09
(...)
Running is a mental sport and we’re all insane!

Twitter
Bill Mattis‏
@adguy007
Replying to @JoshCox
@joshcoxrun “Running is a mental sport…and we’re all insane!”
Learn to run when feeling the pain: then push harder.
4:37 PM - 13 Apr 2009

Twitter
Wade Harris‏
@wadeharris11
Marathon day! Up bright and early. “Running is a mental sport and we are all insane.”
5:18 AM - 25 Apr 2009

Twitter
Brandi Heinz Brown‏
@brandiheinz
literally dragging myself out to run… “Running is a mental sport…and we’re all insane!”
7:02 PM - 30 Apr 2009

Google Books
One More Step the 638 Best Quotes for the Runner:
Motivation for the Next Step!
By Randy L. Thurman
Bloomington, IN: iUniverse
2012
Pg. 21:
Running is a mental sport and we’re all insane! —Unknown

Denver (CO) Post
Cross country: Hurting for the team creates lifelong bonds, memories
By JOHN MEYER | .(JavaScript must be enabled to view this email address) | The Denver Post
PUBLISHED: October 30, 2013 at 1:51 pm | UPDATED: April 29, 2016 at 6:59 am
(...)
Salida T-shirts seen at state cross country last Saturday: “Running is a mental sport and we are all insane.”

Google Books
Running through Life:
Reflections from 26.2 Miles
By Tommy Bresson
Bloomington, IN: WestBow Press
2014
Pg. 111:
“Running is a mental sport, and we’re all insane!” - Unknown.