"He was a beloved son, husband, father, brother and friend to so many and will be sorely missed." Prudential Ride London is a three-day festival that was held from Friday to Sunday, and the London-Surrey 100 event took place on Sunday.
The race began at 6am in Queen Elizabeth Olympic Park and followed a 100-mile route through closed city roads and into Surrey before returning to finish in The Mall.
Thank you all for your most generous donations." His sister Andrea Day, 43, said: "We are very touched by the kind messages and donations from everyone on Robin's Just Giving page.
"As you can imagine we are all very shocked and saddened by the news of his passing.
He added he had overcome the cancer Hodgkin Lymphoma as a child.
On Saturday he posted on his Facebook page: "I am riding the Prudential 100 for Cancer Research UK tomorrow and I would like to say a huge thank you to all my family, friends and regulars at my local The Nightingale in Bicester for their generous donations, not forgetting Kieran O'Brien Matt Kaprockyj and Jeanette Lee the team who run the pub.
Mr Chard was a regular at The Nightingale pub in Langford, where landlord Matt Kaprockyj also paid tribute today. "Two days ago he helped us to fix our CCTV and he helped us when we had computer problems.
Speaking to the Oxford Mail he said: "I am totally shocked, it has still not really sunk in yet. "He will be sadly missed by all of the staff and his friends at The Nightingale." Many people have left tributes on social media and on the Just Giving page, where Mr Chard said even the smallest donations would be gratefully received.
His post said he had lost his father Edwin and his mum's long-term partner Bert to lung cancer, as well as his mother-in-law Sheila to non-Hodgkin Lymphoma.
Cherwell district councillor Dan Sames said: "When Rob asked me to sponsor him he was full of enthusiasm for the event and to be able to do something for Cancer Research.
Despite receiving immediate medical attention from other riders and medics he died later in Kingston Hospital. Pay your tributes and share your memories He set himself a target of bringing in £400 for the charity before the race but donations on his Just Giving page have now smashed the £60,000 mark.
His wife Vickie said: "Robin was doing something he loved to raise money for Cancer Research UK, a cause that was very important to him after losing his father, his mother's partner and my mother to cancer.
A CHARITY appeal started by a cancer survivor who died during his sponsored cycle has hit £60,000 - more than 150 times his original target.Robin Chard, 48, was raising money for Cancer Research UK by taking part in the Ride London-Surrey 100 challenge on Sunday when he had a cardiac arrest 25 miles in.