Great Britain's David Weir won the wheelchair race at the London Marathon for a record-equalling sixth time.
The 32-year-old won a sprint finish to take the title in 1:32:26 and equal Baroness Tanni Grey-Thompson's record.
"This is my favourite win ever because the field was so strong," Weir told BBC Radio 5 live.
Shelly Woods ensured there was further success for Britain's Paralympians as she cruised to victory in the women's wheelchair race.
Weir beat Switzerland's Marcel Hug by a second, with American Krige Schabort a further second adrift.
However, with increasing family commitments, the 32-year-old suggested Sunday's London Marathon could be his last.
"Maybe," Weir said. "I've got an eight-month-old baby boy and I've got another one on the way in October, so I need a bit of time at home.
"There's not a lot of goals left. I'll definitely take a year out after the [Paralympics] because I want to spend some time with my family."
The Londoner admitted it was a "great privilege" to match Grey-Thompson, whom Weir described as a role model.
"She was the one who got me back into the sport when I had a little dip," said Weir.
"I wasn't enjoying the sport but watching her in Sydney [at the 2000 Olympics] brought me back, so it is great to equal her record.
"I was quite emotional when I crossed the line because it could be my last one for a while."
Woods, 26, finished almost three minutes ahead of Japan's Wakako Tsuchida, while Canadian Diane Roy took third.
"I'm really happy," Woods told BBC Radio 5 live. "I can't believe it.
"To win a Paralympic gold medal is my ambition as an athlete. If I could do it in London would be amazing. I wouldn't say I'm now favourite for a Paralympic gold but that's the ambition in my career."