A record number of runners are expected to take part in the second staging of the Southampton Half Marathon on Sunday.
Around eight thousand runners will take part in a series of events - varying in length - over the weekend.
And on Sunday it is the annual London marathon - a distance of 26.2 miles taken on by more than 38 thousand participants.
One of those will be 71 year old grandfather Martin Jacobs - who, despite having sight and mobility problems is absolutely determined to do his bit to raise money for the Naomi House Children's hospice.
Sally Simmonds went to meet him.
The funeral will take place later for a Berkshire man who died after completing the London marathon.
Rob Berry, who was 42-years-old and from Newbury, collapsed just minutes after crossing the finish line.
More than £76,000 has been raised for his chosen charity, the National Osteoporosis Society.
He chose to support the society after his mother was diagnosed with the condition at the age of 52.
A spokes person from the charity said, "We are really touched by the incredible generosity in tribute to Mr Berry, who wrote so movingly about why he was raising money to help fight osteoporosis."
More than £76,000 has been raised in memory of a Berkshire runner who died moments after completing the London marathon.
His Just Giving page shows donations have totalled around four and a half thousand percent of his original target, which was £1,700.
The money goes to the National Osteoporosis Society. Mr Berry chose to support the society after his mother was diagnosed with the condition at the age of 52.
"We are really touched by the incredible generosity in tribute to Mr Berry, who wrote so movingly about why he was raising money to help fight osteoporosis." - National Osteoporosis Society
Friends and fellow runners stood in silence today to remember the man who died after completing the London Marathon last weekend. They gathered near Newbury for a regular five kilometre run which Rob Berry often took part in. Richard Jones has more.
The Newbury parkrun in Berkshire today is being dedicated in memory of a London Marathon runner who died last weekend. Rob Berry, 42, from Newbury, collapsed after crossing the finish line. He was a well known runner in the area.
His Just Giving page has received donations of more than £72,000 to the National Osteoporosis Society so far.
Nearly 6000 donations have been made after a Newbury man died when he completed the London marathon last weekend.
Rob Berry was running the marathon in memory of his mother who was diagnosed with Osteoporosis and the £70,000 worth of donations will be donated to the National Osteoporosis Society.
Nearly 6,000 donations have been made to smash Rob's original target of £1,700.
The family of a man who died after running the London Marathon said they are "overwhelmed" by the donations that have been made in his honour.
In a statement issued by organisers of the marathon, Robert Berry's family said they were overwhelmed by the heartfelt messages and contributions to the National Osteoporosis Society, adding:
We are devastated and shocked by the events of Sunday and cannot believe that he is no longer with us to share in our lives and laughter.
He will be greatly missed by his family, friends and work colleagues – a fun-loving and caring person, respected, loyal and very much loved by us all.
He was a loving husband to Gwen and an amazing father to his two children and will remain forever in their hearts.
Rob was a loyal and loving son to Alan and Ann and a fantastic, caring brother to his younger sister Janet who always looked up to him.
Rob will be a great loss to our family.
An experienced runner from Newbury sadly collapsed and died after completing Sunday's London marathon. Robert Berry has since raised more than £50,000 on his Just Giving page for an osteoporosis charity, in tribute to his mum. Mel Bloor has this report.
A man from Newbury who died after completing the London marathon has raised more than £43,000 for an Osteoporosis charity.
Rob Berry's Just Giving page has seen nearly 4000 donations after his tragic death when he passed the finish line on Sunday.
More than £23,000 has been donated to the National Osteoporosis Society in the name of Rob Berry, who died after completing this year's London Marathon.
The 42-year-old collapsed and later died after crossing the finish line at Sunday's race.
Donations on Mr Berry's JustGiving page have now reached more than £23,000. On the page Mr Berry explained he was running the marathon to raise money for the National Osteoporosis Society - a charity which has supported his mother, who was diagnosed with the condition at the age of 52.