Eilish McColgan set a course record to win the women's race at the Big Half in London while Mo Farah won the men's.
McColgan crossed the line in 1:07:35, smashing the previous course record of 1:09:51.
Quadruple Olympic gold medallist Farah claimed his third win in the half-marathon event, finishing in 1:01:49.
A course record was also set in the men's wheelchair race with six-time Paralympian David Weir finishing in 47:18 while Commonwealth Games silver medallist Eden Rainbow-Cooper equalled the women's record of 56:39.
On Friday McColgan announced she was impressive season Amazon Prime Garmin Deals.
The Scot said it was tough running the second half of the race solo but 'it was more of a challenge not to smile with everyone cheering us along'.
'It's been a dream season,' said McColgan, who was followed home at the Big Half by 2021 winner Charlotte Purdue and Samantha Harrison in third. 'I'm really happy. It was nice to be back in London and it was an incredible experience.'
On Friday McColgan announced she was pulling out of the London Marathon, citing fueling issues during training. She will defer her place to the next year's event, which will revert to the traditional date of April.
'It's disappointing. If it was up to me, then I would probably try to muscle through it but I know that is my heart speaking. The sensible decision is to get everything right for April,' she said.
McColgan defers London Marathon place London Marathon next month, winning comfortably yesterday, followed by Jack Rowe in second and 2021 winner Jake Smith in third.
He will be competing for the first time since 2019, having been a pacemaker at the elite-only event in 2020.
'It's nice to be back,' said Farah following his win. 'I love this course. The key thing for me was to try to win no matter what happened. It was all practice for the London Marathon.'
