John Pfeffer

10years All Star
John Pfeffer
I am riding 2,000 km in memory of Josee and Marc. Please sponsor me and support my challenge to fight kids' cancer and save little lives.
I've Ridden 0.0 km ? My goal is 2,000 km
My Rankings
  • National: 5th
  • Province: 2nd in ON
  • My Team: 1st
I've raised $6,730 My goal is $7,000 Donate Now

I'm Riding For

Josee and Marc

Most unfortunately, I now add my wife Josée to this tribute. She passed away in December after the unimaginable hardship of facing two primary cancers — triple‑negative breast cancer and a gastrointestinal cancer. She met every challenge with courage, humour, and love, and I now ride in her honour. I also continue to ride for my best friend, Marc Rouleau, who succumbed to cancer on April 5, 2020. I could never do justice here to the kind of man he was — an exceptional father, military leader, husband, and friend. His memory stays with me on every ride. Neither Josée nor Marc faced childhood cancer, but I believe that every advance in the fight against childhood cancers strengthens the broader fight against cancer as a whole. That’s why I ride — for the kids, for the families, and for the people we’ve loved and lost.

My Story

21 Jun 2026

This August, I’m cycling 2,000 km in the SickKids 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 support SickKids Foundation as they deliver life‑saving care, develop new treatments, and push toward cures that every child deserves.

This year, the ride carries a weight I never expected.

In December, I lost my wife, Josée — my love, my partner, and the person who cheered the loudest for every challenge I took on. She faced her own cancer with courage, humour, and a fierce will to live. Even in the hardest moments, she wanted me to keep riding, keep fundraising, and keep believing in a future where fewer families face what we did.

So I’m riding — for the kids, for the families fighting right now, and for Josée.

This will be my 16th straight year taking on this challenge, and once again I’ll be joined by my son, Nathan. Together, we’re taking on what will be our biggest ride as a team: Toronto to Quebec City — four days of cycling, one rest day, and a route I’ve completed before but Nathan has never done end‑to‑end. It’s a huge challenge, and one we’re ready to take on together.

Every kilometre we ride honours the kids who can’t, the families who never give up, and the memory of the woman who inspired me to keep going.

If you’re able, please consider donating to support these brave kids and their families. Your generosity fuels research, treatment, and hope.

Thank you.

My Legacy

Here's my personal impact over 10 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
  • 1,023 km Ridden
    $11,960 Raised
    2025
  • Ridden
    $6,730 Raised
    2026
10years
16,085 km
Ridden
$64,526
Raised

My Challenge

  • 69.6 km ride - 69.63km Road Cycling - Sunday, July 19, 2026
    Map
    Logged this ride 4 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 14 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 18 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 18 days ago
  • 114.4 km ride - 114.35km Road Cycling - Sunday, June 28, 2026
    Map
    Logged this ride 25 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 32 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 32 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 37 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 37 days ago
  • 70.8 km ride - 70.84km Road Cycling - Sunday, June 7, 2026
    Map
    Logged this ride 46 days ago
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My Sponsors

  • André Piché
    “Bravo John et Nathan pour votre engagement envers cette cause qui me tient aussi beaucoup à cœur, encore plus cette année. We'll send you good vibes throughout the riding journey!”
    $500
    Received this donation 17 days ago
  • Rahim Hirji
    $500
    Received this donation 17 days ago
  • Jason Liu
    “Wishing you all the best in this year’s ride—especially after seeing you yesterday and being reminded of how much this tradition means to you. Hope the miles feel steady this year, and that being out there brings a sense of connection and peace along the way.”
    $300
    Received this donation 37 days ago
  • Anonymous
    “Have a fun and safe bike ride!!”
    $258.75
    Received this donation 15 days ago
  • Joel Schwartz
    “A great person riding for a great cause!”
    $258.75
    Received this donation 18 days ago
  • Pushkarini Bissessur
    “Your biking adventures are always so inspiring. Best of luck on your rides!”
    $258.75
    Received this donation 11 days ago
  • Thomas Hinton
    $258.75
    Received this donation 12 hours ago
  • Kathryn Hyland
    $250
    Received this donation 18 days ago
  • Nick De Palma
    $250
    Received this donation 7 days ago
  • Stephanie Greer
    $250
    Received this donation 15 days ago
  • Joan Lessey-Weir
    “John, my dear dear friend. As you always do RIDE for others and this year ride WITH JOSEE! JLW”
    $207
    Received this donation 18 days ago
  • Joe Soga
    $207
    Received this donation 4 days ago
  • Steve Dobronyi
    “Good luck, John. We're thinking of Josee.”
    $200
    Received this donation 17 days ago
  • David Kroach
    $180
    Received this donation 14 days ago
  • Manon Laverdiere
    $155.25
    Received this donation 17 days ago
  • Oscar Chow
    “Thank you, John, for continuing this fight each year and for being an inspiration to everyone.”
    $150
    Received this donation 3 days ago
  • Angela Jonkhans
    “Best of luck on the ride again this year John and Nathan. You are truly amazing!”
    $103.50
    Received this donation 16 days ago
  • Azita Bassiji
    “Good Luck John and Nathan. Thank you for doing what you do.”
    $103.50
    Received this donation 18 days ago
  • Brigitte Landry
    $103.50
    Received this donation 18 days ago
  • Clifford Martz
    $103.50
    Received this donation 16 days ago
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