John Pfeffer

I am riding 1,500 km for Josee Piche and Marc Rouleau. Please sponsor me and support my challenge to fight kids' cancer and save little lives.

Donate Now

I've Ridden 200.0 km My goal is 1,500 km

My Rankings

National: 3rd
Province: 3rd in ON
My Team: 1st

I've raised $7,379 My goal is $8,000 Donate Now

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

17 Jul 2025

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

Here's my personal impact over 9 years to fight kids' cancer and save little lives.

2,007 km Ridden

$5,936 Raised

2017
2,001 km Ridden

$6,381 Raised

2018
1,827 km Ridden

$4,563 Raised

2019
2,004 km Ridden

$5,036 Raised

2020
1,802 km Ridden

$5,439 Raised

2021
1,803 km Ridden

$4,542 Raised

2022
1,809 km Ridden

$6,710 Raised

2023
1,809 km Ridden

$7,228 Raised

2024
Ridden

$7,379 Raised

2025

15,261 km

Ridden

$53,215

Raised

My Challenge

200.0 km ride - 200.02km Road Cycling - Saturday, August 2, 2025

Logged this ride 10 hours 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 12 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 15 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 17 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 17 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 28 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 28 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 28 days ago

My Sponsors

Rahim Hirji
$1,000
Received this donation 14 days ago

John
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! ❤️❤️❤️”
$310.50
Received this donation 17 days ago

John
Josee Piche

“John, thank you for doing this, year after year! Your support of cancer research is invaluable. I love you.”
$300
Received this donation 25 days ago

John
Manisha
$274.28
Received this donation 13 days ago

John
Joel Schwartz

“John, Happy to donate to a great cause. Joel”
$258.75
Received this donation 17 days ago

John
Linda Wood
$250
Received this donation 13 days ago

John
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.”
$250
Received this donation 17 days ago

John
STEVE DOBRONYI
$250
Received this donation 9 days ago

John
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.”
$207
Received this donation 16 days ago

John
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”
$207
Received this donation 12 days ago

John
David Kroach
$180
Received this donation 11 days ago

John
Yu Xiang Liu

“Wishing you a safe ride John, and sending good vibes to you and your family.”
$150
Received this donation 7 days ago

John
Paolo Zadra

“Best of luck John. Un abbraccio forte per Josee.”
$125
Received this donation 6 days ago

John
Annie St-Hilaire

“Bon courage John! Tu es notre héros! On vous souhaite du beau temps pour ton “ challenge “, nos prières sont pour Josée et on pense beaucoup à vous tous! 🙏🤞”
$124.20
Received this donation 11 days ago

John
Emily Lei

“Thank you for all you’re doing in the fight against cancer. I’m so inspired by your strength and the incredible effort you’re making with the ride. Cheering you on and keeping Josee in my thoughts for a smooth recovery.”
$124.20
Received this donation 12 days ago

John
Fiona Leung
$124.20
Received this donation 6 days ago

John
JLW Lessey-Weir

“John let your legs do the walking and talking for all who cannot. Continue with your strong legacy to help especially now more than ever. JLW”
$124.20
Received this donation 17 days ago

John
Manon Laverdiere

“John et Nathan: vous avez mon admiration de continuer à faire des longues distances à vélo pour ramasser des fonds pour cette bonne cause. Je suis de tout coeur avec votre famille qui est personnellement touchée par ce fléau qu'est le cancer. S'il y a quelqu'un qui peut se battre férocement contre le cancer, c'est bien Josée. Bon courage à vous quatre. Vous êtes constamment dans mes pensées. Manon xox”
$124.20
Received this donation 15 days ago

John
Ann Teschke

“Have a great ride John. My thoughts are with you and Josée.”
$120
Received this donation 13 days ago

John
Nathalie et Simon
$120
Received this donation 4 days ago

John