Mark O’Sullivan

Riding 80km's to change lives

I'm fundraising for a great cause!

I’m taking on the Breakthrough T1D One Ride to raise vital funds for type 1 diabetes research! On 21 November 2026, I’ll be cycling through the picturesque Barossa Valley - pushing myself physically while riding for a powerful cause.

Type 1 diabetes can affect anyone, at any time. Every day, 8 Australians are diagnosed. It’s a relentless 24/7 condition, requiring up to 180 extra decisions daily just to stay safe and healthy.

Breakthrough T1D is the largest funder of type 1 diabetes research in the world, driving life-changing breakthroughs for the 140,000+ Australians living with T1D.

Please donate today and help move us closer to a world without type 1 diabetes. Thank you for your support!

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Thank you to my Sponsors

$540

Vivien Rosenfeld

Best of luck!

$540

Anonymous

all the best mark... good riding

$500

Ash Passive Fire Solutions Pty Ltd

Best of luck my friend!

$269.13

Jared Hoddinott

Well done Mark - great cause !

$250

Ruben Boopalan

great cause Mark.

$211.70

Francesco Brancato

This is a great cause to fight for Mark! The Brancato are fully behind you and we hope this can advance your cause just a little! 💪❤️💪

$180

Jesse Rosenfeld

You’re a legend Mark!!!

$163.43

Mark `bradley

$150

Carly Wood

You’re a legend! Xx

$106.75

Andrew Rochester

$106.75

Raha

$106.75

Wayne Peters

Good luck Mark, best wishes from Stockholm 😎

$106.75

Trent Lennox

Great cause mate more than happy to contribute - hope you and family are well mate!

$106.75

Jade Clarke

$106.75

Paul Hooper

Great cause, Mark, good stuff - ride on!

$100

Mark O’sullivan

$100

Jaimee Honter

All the best Mark! What a fantastic cause.

$80

James Paterson

Great stuff Mark, good luck for the ride. Well done on pedaling a cure that bit closer.

$55.95

Debbie Vick

Good luck with the challenge. Hope my support helps

$55.95

Jennie Rivera

$55.95

Shaun Ellis

$55.95

Emily

A great effort Mark, I'm sure one your family will be proud of!

$55.95

Mitch Hannigan

Good on you Mark - all the best!

$55.95

Sarah Bouchier

$54.75

Reid Kinnaird

Go Mark!

$50

Siri Dhan