Eilish McColgan will make her London Marathon debut on October 2 – 26 years after mum Liz won the 1996 race.
The 31-year old has decided the time is right after setting new British records for 5K, 10K and 10 miles.
London Marathon boss Hugh Brasher said: “We’re all looking forward to watching Eilish follow in her mum’s footsteps and seeing if she can translate her incredible form over the shorter distances on the road to the marathon."
