John 'Zac' Brennan

5years All Star
John 'Zac' Brennan
I am riding 400 mi for Kahleesi. Please sponsor me and support my challenge to fight kids' cancer and save little lives.
I've Ridden 564.7 mi to fight kids' cancer
My Rankings
  • National: 193rd
  • State: 5th in CO
  • My Team: 3rd
I've raised $4,500 to fight kids' cancer Donate Now

I'm Riding For

Kahleesi

Kahleesi

Kahleesi ride your cool bike! Have fun❤️

My Story

13 Aug 2024

This September 2024 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. I'm also riding for myself. In Vietnam in the Army I was exposed to Agent Orange herbicide and now at 74, have Stage IV metastatic prostate cancer.

Your support will change little lives.....and mine too!

Thank you.

John Zac Brennan

My Legacy

Here's my personal impact over 5 years to fight kids' cancer and save little lives.
  • 514 mi Ridden
    $2,077 Raised
    2020
  • 465 mi Ridden
    $1,695 Raised
    2021
  • 519 mi Ridden
    $2,266 Raised
    2022
  • 546 mi Ridden
    $6,000 Raised
    2023
5years
2,610 mi
Ridden
$16,538
Raised

My Challenge

  • 33.1 mi ride - Lake Catamount Loop - Monday, September 30, 2024
    Logged this ride 34 days ago
  • 25.1 mi ride - Bartholomew Lane Loop - Friday, September 27, 2024
    Logged this ride 36 days ago
  • 28.2 mi ride - The Timbers - Thursday, September 26, 2024
    Logged this ride 38 days ago
  • 26.6 mi ride - Rabbit Ears Pass Base Loop - Wednesday, September 25, 2024
    Logged this ride 38 days ago
  • 30.2 mi ride - Sidney Peak Ranch Loop - Tuesday, September 24, 2024
    Logged this ride 40 days ago
  • 30.2 mi ride - Sidney Peak Ranch Loop - Sunday, September 22, 2024
    Logged this ride 41 days ago
  • 30.4 mi ride - Friday Random Ride - Friday, September 20, 2024
    Logged this ride 43 days ago
  • 20.1 mi ride - Humble Ranch - Wednesday, September 18, 2024
    Logged this ride 44 days ago
  • 12.8 mi ride - Tellier Cutoff - Tuesday, September 17, 2024
    Logged this ride 47 days ago
  • 13.5 mi ride - Road 62 to Hahn’s Peak Village - Sunday, September 15, 2024
    Logged this ride 47 days ago
  • 24.2 mi ride - Rabbit Ears Pass Base Loop - Monday, September 16, 2024
    Logged this ride 48 days ago
  • 14.0 mi ride - Seedhouse Road - Saturday, September 14, 2024
    Logged this ride 50 days ago
  • 27.3 mi ride - Base of Rabbit Ears Pass Loop - Thursday, September 12, 2024
    Logged this ride 52 days ago
  • 28.3 mi ride - Sydney Peak Loop - Wednesday, September 11, 2024
    Logged this ride 53 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 54 days ago
  • 21.8 mi ride - Clark Store/Steamboat Lake Loop - Monday, September 9, 2024
    Logged this ride 54 days ago
  • 25.9 mi ride - Bartholomew Lane Bridge Loop - Tuesday, September 10, 2024
    Logged this ride 54 days ago
  • 34.6 mi ride - Rabbit Ears Pass Base/ Bartholomew Lane Loop - Saturday, September 7, 2024
    Logged this ride 56 days ago
  • 25.4 mi ride - Bartholomew Lane Bridge Loop - Friday, September 6, 2024
    Logged this ride 57 days ago
  • 25.4 mi ride - Base of Rabbit Ears Pass - Wednesday, September 4, 2024
    Logged this ride 60 days ago
  • 15.1 mi ride - Hinman Park - Tuesday, September 3, 2024

    From Glen Eden to Boulder Park

    Logged this ride 60 days ago
  • 14.6 mi ride - River Creek Loop via Hwy 131 - Tuesday, September 3, 2024
    Logged this ride 60 days ago
  • 31.7 mi ride - Lake Catamount Loop - Monday, September 2, 2024
    Logged this ride 61 days ago
  • 26.1 mi ride - Bartholomew Lane Loop - Sunday, September 1, 2024
    Logged this ride 62 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 63 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 78 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 103 days ago

My Sponsors

  • 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!”
    $495.09
    Received this donation 53 days ago
    John 'Zac' Brennan
    John
    “Thank you wonderful donors for your generous matching of funds we have raised.”
  • Christopher Flanagan
    $124.20
    Received this donation 53 days ago
    John 'Zac' Brennan
    John
    “Thank you Chris for your support. Five years of riding and raising funds for the children never gets old. Coincidentally, the Agent Orange (presumed cause) stage IV prostate cancer is over 5 years old. My current job is Stayin Alive, I hum the BeeGees song frequently.☮️❤️”
  • Anonymous
    $124.20
    Received this donation 58 days ago
    John 'Zac' Brennan
    John
    “Thank you for your generosity. These children deserve to be loved and cared for by our communities at large, IMHO. The funds raised really are given, granted to many researchers seeking cures for the myriad of terrible cancers out there. ☮️❤️”
  • Paula & Joe Huselton
    “Let’s all kick cancers butt! Thank you Zac!”
    $124.20
    Received this donation 54 days ago
    John 'Zac' Brennan
    John
    “Paula & Joe thank you for the support. My current level is $3071. Rock and roll! ☮️❤️”
  • Wayne and Lisa Adamo
    “Go Zac!”
    $124.20
    Received this donation 53 days ago
    John 'Zac' Brennan
    John
    “Thank you Lisa & Wayne for being there for the kids. Yesterday my matched donations amounted to $495. WooHoo!! ☮️❤️”
  • Bob Pruett
    $120
    Received this donation 47 days ago
    John 'Zac' Brennan
    John
    “Prudog, thank you for your generosity. As you and I both well know..cancer sucks. My yearly riding for the children keeps me focused on the Cure. I’ve been busy getting Mary married off this past year. Success!! Last Saturday she was made an ‘honest woman’. Everyone is happy 😃 See ya!”
  • Amy Triandiflou & Jesse Hull
    “Sending pedal power your way Zac!”
    $103.50
    Received this donation 54 days ago
    John 'Zac' Brennan
    John
    “You are a generous family. I thank you for teaching your children to be there for others.❤️❤️”
  • Dennis Dougherty
    “Go John Go”
    $103.50
    Received this donation 63 days ago
    John 'Zac' Brennan
    John
    “Thank you Dennis! I appreciate your support. You are a good friend. ☮️❤️ Zac”
  • Anonymous
    $103.50
    Received this donation 63 days ago
    John 'Zac' Brennan
    John
    “Thanks very much for your donation, Anonymous Donor!!”
  • Elizabeth Belz Moore Metzger
    $103.50
    Received this donation 52 days ago
    John 'Zac' Brennan
    John
    “Thank you Betty. Our campaign this year is going very well. The children fighting various,terrible cancers need cures to be developed. My daughter is getting married today so my bike riding takes a backseat. 276 miles down, only another 124 to go. Thanks again for your generosity.☮️❤️”
  • Eric Scherff
    “Thank you, Zac! We admire and appreciate your efforts to raise funds for research on childhood cancers. And it is great to see you around the neighborhood and on the roads putting in your miles! excellent work this season!”
    $103.50
    Received this donation 33 days ago
    John 'Zac' Brennan
    John
    “Thank you Eric. Riding is pleasurable and good exercise for me. Helping in the fundraiser brings me pride. These children fighting various cancers deserve cures so they can have regular childhoods.”
  • John Legrice
    $103.50
    Received this donation 39 days ago
    John 'Zac' Brennan
    John
    “Thank you Jack for your support. These children fighting various diabolical cancers certainly need cures. As an old ‘child’ I too couldn’t say no to a cure for my stuff. Biking and begging for donations keeps me distracted most of the time 😎☮️❤️”
  • Mark Lobstein
    “Hey Zac! Was waiting to hear from you...Great to see you in June, just hate the occasion. Thanks for keeping the challenge going!”
    $103.50
    Received this donation 54 days ago
    John 'Zac' Brennan
    John
    “Thank you Mark for your continued support. I’m sitting here looking at a picture of Doug and I at my wedding. I must say he and I looked pretty good when we were 32. ☮️❤️”
  • mike fitzpatrick
    “Hard to keep a good man down !”
    $103.50
    Received this donation 103 days ago
    John 'Zac' Brennan
    John
    “Thanks Fitz for your help. I’m hoping to recruit more riders to join the Great Cycle Challenge this year. Our daughter is getting married this September and my miles will be harder to accrue. My cancer is currently stabilized so I’ve been riding regularly. But by the end of the day I suffer from TOAS (Tired Old Ass Syndrome). Thanks again for your help.”
  • Pat O’Leary
    “Thanks for doing this! ♥️”
    $103.50
    Received this donation 62 days ago
    John 'Zac' Brennan
    John
    “Thanks Little Dear❤️”
  • Robert Wilmoth
    “Atta Boy Zac! Thanks for the voodoo that you do, and for your efforts to help fund research. You're an inspiration to many of us out here in the community. Rob Wilmoth”
    $103.50
    Received this donation 76 days ago
    John 'Zac' Brennan
    John
    “Rob, thank you again for your help! We’re off to the races! The Great Cycle Challenge is alive and kicking. This is the 5th year I’m proud to be of some use in the efforts across the country to bring awareness and hopefully a big bucket full of dollars to the researchers. Those folks are going to save many children’s lives.”
  • TBH Plumbing & Heating
    “Keep Pedaling Zac!”
    $103.50
    Received this donation 53 days ago
    John 'Zac' Brennan
    John
    “Tucker thank you for the generous donation. The matched amount yesterday was $495. And I’m over halfway on my commitment of 400 miles. Currently at $3071 raised. ☮️❤️”
  • timothy anderson
    “To the Man, the Myth, the Legend. Peddle on my friend. Strong work”
    $103.50
    Received this donation 34 days ago
    John 'Zac' Brennan
    John
    “High praise coming from Mr. Cross Country Bicyclist!! Thank you Tim. As of this morning $7,258,498 has been raised.”
  • Facebook Fundraiser Donation
    $100
    Received this donation 241 days ago
    John 'Zac' Brennan
    John
    “Mary, thanks for your generous donation!”
  • Andrew O'Leary-Brennan
    “Keep Pedaling!!!!”
    $72.45
    Received this donation 53 days ago
    John 'Zac' Brennan
    John
    “Thank you Andrew & Jess. As you both well know kids are precious and deserve a loving healthy childhood. Cancer really sucks. It is indiscriminate and shows no mercy. I am grateful for Natalie, she deserves the best. ☮️❤️”
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