Mark Koza
I am riding 400 miles, in memory of my brother Mike Rayhill and my father-in-law Joe Rayhill, who always supported my rides.
I've Ridden
616.5 mi
to fight kids' cancer
My Rankings
- National: 659th
- State: 26th in PA
I'm Riding For
Mike Rayhill / Joe Rayhill
Forever loved - Forever missed
My Story
8 Aug 2025
This September, I am taking part in the Great Cycle Challenge to fight kids' cancer!
Why? Because right now, cancer is the biggest killer of children from disease in the United States. Over 15,700 children are diagnosed every year, and sadly, 38 children die of cancer every week.
Kids should be living life, not fighting for it.
So I am raising funds through my challenge to help these kids and support Children's Cancer Research Fund to allow them to continue their work to develop lifesaving treatments and find a cure for childhood cancer.
Please support me by making a donation to give these kids the brighter futures they deserve.
Your support will change little lives.
Thank you.
My Legacy
Here's my personal impact over 5 years to fight kids' cancer and save little lives.
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456 mi Ridden$2,254 Raised2021
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567 mi Ridden$2,138 Raised2022
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420 mi Ridden$2,254 Raised2023
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607 mi Ridden$3,466 Raised2024
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616 mi Ridden$2,487 Raised2025
2,666 mi
Ridden
$12,599
Raised
My Challenge
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20.0 mi ride - Sundays peninsula ride - Sunday, September 28, 2025
Logged this ride 25 days ago -
72.0 mi ride - Saturdays Erie ride - Saturday, September 27, 2025
Logged this ride 26 days ago -
83.0 mi ride - Friday ride in Erie - Friday, September 26, 2025
Logged this ride 27 days ago -
56.0 mi ride - Sunday on Pine creek - Sunday, September 21, 2025
Logged this ride 32 days ago -
80.0 mi ride - Saturday on Pine creek - Saturday, September 20, 2025
Logged this ride 33 days ago -
$2,000 raised to fight kids' cancer!
I just raised $2,000 to fight kids' cancer and achieved LEGEND LEVEL in the challenge! Thank you so much for your support.
Posted 33 days ago -
53.0 mi ride - Day 3 Redbank Valley - Sunday, September 14, 2025
Logged this ride 39 days ago -
77.0 mi ride - Day 2 Armstrong Trail - Saturday, September 13, 2025
Logged this ride 40 days ago -
51.0 mi ride - Redbank valley Day 1 - Friday, September 12, 2025
Logged this ride 41 days ago -
$1,000 raised to fight kids' cancer!
I just raised $1,000 to fight kids' cancer and achieved WARRIOR LEVEL in the challenge! Thank you so much for your support.
Posted 42 days ago
My Sponsors
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Kick Cancer's Butt Day matched donation
“Here's your matched donation from a group of wonderful Children's Cancer Research Fund supporters. THANK YOU so much for your awesome efforts to kick cancer's butt!”
$692.33Received this donation 41 days ago
Mark
“Thank you !!!”
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Carolyn Rayhill
$258.75Received this donation 42 days ago
Mark
“Thank you, Carolyn, for supporting my ride!!”
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Mom
“Thank you mom for supporting my ride !!❤️”
$200Received this donation 29 days ago
Mark
“Thanks Mom ❤️”
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Jen & Randy
$103.50Received this donation 42 days ago
Mark
“Thank you, Jen and Randy, for supporting my ride !!”
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Tim VanDervoort
“Go for it, Mark!!!”
$103.50Received this donation 40 days ago
Mark
“Thank you Tim !!”
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Kal and Monika Lyons
“We're happy to support such a good friend supporting such a good cause.”
$72.45Received this donation 24 days ago
Mark
“Thank you Kal and Monika for supporting my ride !!!”
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Steve Hilton
$72.45Received this donation 33 days ago
Mark
“Thank you Steve for supporting my ride !!!”
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Anonymous
$51.75Received this donation 41 days ago
Mark
“Thank you for supporting my ride !”
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Jeff and Lea Dissen
$51.75Received this donation 27 days ago
Mark
“Thank you for donating to my ride !!!”
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Lori FISCUS
“Keep spinning for the love of the kids!”
$51.75Received this donation 42 days ago
Mark
“Thank you Sis !!!!”
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Ned &Lynda Karger
“Keep up the good work!”
$51.75Received this donation 42 days ago
Mark
“Thank you, Ned, and Lynda for supporting my ride !!”
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Aunt Fran
“That you Aunt Fran for supporting my ride !!”
$50Received this donation 29 days ago -
Barbara Dahl
“Keep on peddling Mark!”
$36.23Received this donation 46 days ago
Mark
“Thank you Barb for supporting my rides!!!”
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Beth Zwerin
“Go Mark!!!”
$36.23Received this donation 44 days ago
Mark
“Thank you Beth for supporting my ride !!”
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David Gausman
$36.23Received this donation 40 days ago
Mark
“Thanks Dave !!!!”
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Karen Gorski
“What a great cause. Thanks for all the cycling!”
$36.23Received this donation 42 days ago
Mark
“Thank you, Karen, for supporting my ride !!”
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Lauren Shreffler
“Way to go Grampy!! Love you! 💜”
$36.23Received this donation 22 days ago
Mark
“Thank you Lauren ❤️”
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Lori and Terry Mague
“Thank you Lori and Terry for supporting my ride !”
$30Received this donation 23 days ago -
Brian Karger
$20.70Received this donation 42 days ago
Mark
“Thank you , Brian for supporting my ride !!”
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Cory Darr
$20.70Received this donation 42 days ago
Mark
“Thank you, Cory, for supporting my ride!!”