Sienna Millette

Sienna Millette
I am riding 50 km for my aunty, Mimi. Please sponsor me and support my challenge to fight kids' cancer and save little lives.
I've Ridden 45.7 km My goal is 50 km
My Rankings
  • National: 2799th
  • Province: 1499th in ON
  • My Team: 1st
I've raised $540 to fight kids' cancer Donate Now

I'm Riding For

Mimi

My Story

28 Jul 2026

This August, I am taking part in the Great Cycle Challenge to fight kids' cancer!

Why? Because right now, over 1,700 children are diagnosed with cancer every year, and it's the biggest killer of children from disease in Canada.

Kids should be living life, not fighting for it.

So I am raising funds through my challenge to help these kids and support SickKids Foundation to allow them to continue their work in developing treatments and finding 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.

Sienna

My Challenge

  • 2.0 km ride - Friday, August 14, 2026
    Logged this ride 3 days ago
  • 3.1 km ride - Thursday, August 13, 2026
    Logged this ride 4 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 5 days ago
  • 4.0 km ride - Tuesday, August 11, 2026
    Logged this ride 6 days ago
  • 2.0 km ride - Monday, August 10, 2026
    Logged this ride 8 days ago
  • 7.1 km ride - Sunday, August 9, 2026
    Logged this ride 8 days ago
  • 5.0 km ride - Trail Ride - Friday, August 7, 2026
    Logged this ride 10 days ago
  • 4.5 km ride - Thursday, August 6, 2026
    Logged this ride 11 days ago
  • 4.0 km ride - Wednesday, August 5, 2026
    Logged this ride 12 days ago
  • 1.0 km ride - Siennas loop - Tuesday, August 4, 2026
    Logged this ride 13 days ago
Show More

My Sponsors

  • 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!”
    $121.69
    Received this donation 5 days ago
  • Jody Millette
    $103.50
    Received this donation 5 days ago
  • Brenda Stewart
    $51.75
    Received this donation 5 days ago
  • Taylor Wilson
    $51.75
    Received this donation 17 days ago
    Sienna Millette
    Sienna
    “Thanks Taylor! You’re the best!”
  • Karen Don
    “Keep to the good work! From Karen, Vince, Devin and Kasey”
    $25.88
    Received this donation 6 days ago
  • Lisa Firlotte
    “Awesome job Sienna!!”
    $25.88
    Received this donation 5 days ago
  • Michele Burns
    $25.88
    Received this donation 16 days ago
    Sienna Millette
    Sienna
    “Yay!! Thank you so much! I love you!”
  • Caroline Forget
    $20.70
    Received this donation 6 days ago
  • Kim Bordignon
    $20.70
    Received this donation 16 days ago
    Sienna Millette
    Sienna
    “Thank you very much!”
  • Marlene Millette
    “As your dad would say on his BMX “Pedal to the metal” ;)”
    $20.70
    Received this donation 13 days ago
  • Mireille Forget
    “Way to go Sienna. I am so proud of you! Keep up the great work.”
    $20.70
    Received this donation 14 days ago
  • Téah Picotte
    “Great job, Sienna! You can do it!”
    $20.70
    Received this donation 14 days ago
  • Margot Hamel
    “Keep peddling”
    $15
    Received this donation 16 days ago
    Sienna Millette
    Sienna
    “I will! Thank you for donating money to help kids with cancer. Come for a bike ride with me sometime! I’ll bake more treats for Boxer and Duke.”
  • Anonymous
    “Way to go!!”
    $10.35
    Received this donation 14 days ago
  • Anonymous
    “Thank you Sienna! Je t’aime Mir! X🫶🏻🩷”
    $5.18
    Received this donation 6 days ago
Donate Now