John Pfeffer
- National: 13th
- Province: 7th in ON
- My Team: 1st
I'm Riding For
Josee and Marc
Most unfortunately I have to add my wife, Josee's, name to this. I now ride for her and my dear friend Marc. Josee was diagnosed in September 2024 with the most aggressive breast cancer, triple negative. She has been battling the disease ever since, principally with chemotherapy. Any prayers or good vibes you can send our way will be greatly appreciated. My best friend, Marc Rouleau, succumbed to cancer April 5, 2020. I don't have enough space here to tell you what a great person he was. Just an outstanding father, military leader, husband, professional. I'll continue to ride in Marc's memory this year. Neither was afflicted with a childhood cancer. I will continue to ride in support of the fight against childhood cancer. I think that's ok as what ever we can do to fight childhood cancer will help in the general fight against cancer. When you and I get a chance to speak please ask me about Marc and how Josee is doing.
My Story
This August, I’m cycling 1,500 km in the SickKids Hospital Great Cycle Challenge to fight childhood cancer — the #1 disease killing Canadian kids. Children should be living life, not fighting for it.
I ride to raise funds for SickKids Foundation, helping provide life-saving care, develop treatments, and search for a cure.
This year, the fight is deeply personal.
Josée — my love and greatest supporter — was diagnosed with stage 4 triple-negative breast cancer last September. She’s been undergoing intensive chemotherapy ever since but unfortunately her cancer has not responded to any of the chemotherapies she has tried, but we are keeping hope. Your prayers, good vibes, and support mean the world to us.
Despite everything, I’m still riding. This will be my 15th straight year cycling to raise funds to fight childhood cancers, joined again by my son Nathan. You may have noticed that I’ve reduced my mileage goal this year to 1,500 km. Even that seems like a lot and will depend on how Josée is doing. Our longest ride will be 500km from Toronto to Ottawa via Kingston over two days which means an ambitious 300km on day 1! Please wish us good fortune and favourable winds!
Please consider donating to support these brave kids and their families.
Thank you.
My Legacy
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2,007 km Ridden$5,936 Raised2017
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2,001 km Ridden$6,381 Raised2018
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1,827 km Ridden$4,563 Raised2019
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2,004 km Ridden$5,036 Raised2020
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1,802 km Ridden$5,439 Raised2021
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1,803 km Ridden$4,542 Raised2022
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1,809 km Ridden$6,710 Raised2023
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1,809 km Ridden$7,228 Raised2024
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747 km Ridden$11,653 Raised2025
My Challenge
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18.1 km ride - 18.05km Road Cycling - Thursday, August 28, 2025
Logged this ride 1 day ago -
4.4 km ride - 4.45km Road Cycling - Wednesday, August 27, 2025
Logged this ride 2 days ago -
8.4 km ride - To Silent Sports and back - Thursday, August 21, 2025
Logged this ride 4 days ago -
123.4 km ride - 123.36km Road Cycling - Sunday, August 24, 2025
Logged this ride 5 days ago -
127.8 km ride - 127.85km Road Cycling - Saturday, August 23, 2025
Logged this ride 6 days ago -
265.1 km ride - 265.14km Road Cycling: around Lake Simcoe - Saturday, August 16, 2025
Logged this ride 13 days ago -
$10,000 raised to fight kids' cancer!
I just hit $10,000 to fight kids' cancer! Thank you so much for your support.
Posted 16 days ago -
200.0 km ride - 200.02km Road Cycling - Saturday, August 2, 2025
Logged this ride 27 days ago -
$5,000 raised to fight kids' cancer!
I just hit $5,000 to fight kids' cancer! Thank you so much for your support.
Posted 38 days ago -
$2,500 raised to fight kids' cancer!
I just raised $2,500 to fight kids' cancer and achieved SUPERHERO LEVEL in the challenge! Thank you so much for your support.
Posted 41 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 43 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 43 days ago -
$500 raised to fight kids' cancer!
I just raised $500 to fight kids' cancer and achieved GUARDIAN LEVEL in the challenge! Thank you so much for your support.
Posted 54 days ago -
$250 raised to fight kids' cancer!
I just raised $250 to fight kids' cancer and achieved PROTECTOR LEVEL in the challenge! Thank you so much for your support.
Posted 54 days ago -
$100 raised to fight kids' cancer!
I just raised $100 to fight kids' cancer and achieved DEFENDER LEVEL in the challenge! Thank you so much for your support.
Posted 54 days ago
My Sponsors
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Rahim Hirji
$1,000Received this donation 41 days ago -
Caroline Rendall
“Sending you support, both financial and emotional. My prayers for Josee, of course.”
$600Received this donation 26 days ago -
Andre Piche
“John, bravo encore pour ton dévouement envers cette terrible maladie. Elle m'affecte plus personnellement cette année mais je continue a penser que des efforts comme les tiens nous amènent de plus en plus vers une cure permanente.”
$500Received this donation 21 days ago -
June
“Thinking of you and Josee!”
$500Received this donation 26 days ago -
Kick Cancer's Butt Day matched donation
“Here's your matched donation made possible by the generosity of long-time SickKids Foundation supporters, the Garron family. THANK YOU so much for your awesome efforts to kick cancer's butt!”
$451.96Received this donation 15 days ago -
Nathalie Grenier
“Merci John et Nathan d’aider encore cette année les enfants atteints du cancer. Vous êtes incroyables! Vous vivez des moments difficiles et malgré la bataille que Josée vit avec son cancer incurable, vous continuez à ramasser de l’argent pour les enfants qui doivent se battre contre cette terrible maladie. Vous êtes forts, courageux et inspirants. Merci! Merci ! Merci! ❤️❤️❤️”
$310.50Received this donation 43 days ago -
Tim Luo
“Thinking of you and Josée. Wishing her strength in treatment and brighter days ahead.”
$310.50Received this donation 24 days ago -
Josee Piche
“John, thank you for doing this, year after year! Your support of cancer research is invaluable. I love you.”
$300Received this donation 52 days ago -
Manisha
$274.28Received this donation 39 days ago -
Thomas Hinton
$274.28Received this donation 16 days ago -
Joel Schwartz
“John, Happy to donate to a great cause. Joel”
$258.75Received this donation 43 days ago -
Lisa Forbes
$258.75Received this donation 20 days ago -
Linda Wood
$250Received this donation 39 days ago -
Nick De Palma
“John, I wish you the best of luck on your rides, which are always inspiring, but more importantly this year, added strength to Josée and your entire family.”
$250Received this donation 43 days ago -
STEVE DOBRONYI
$250Received this donation 36 days ago -
Heather Ingram
“John, your commitment to this cause inspires me year after year. Wishing you all the best with your rides and sending strength and positivity to Josée.”
$207Received this donation 42 days ago -
Joe Soga
“Thanks John for all of your effort towards such a great cause!”
$207Received this donation 12 days ago -
Lilian Chau
“Dear John and Family, Sending you an extra surge of positive energy this August and days to come. May the warmth of the sun and the wind help you along your inspiring ride of hope.”
$207Received this donation 16 days ago -
Anonymous
“We wish you a speedy recovery Josee our prayers are always with you and your family. John i wish you a safe ride. Mariam and Max”
$207Received this donation 38 days ago -
David Kroach
$180Received this donation 38 days ago
