Philippa Taylor has moved to the top of the 10-mile national rankings for her age group.
The 48 year-old Nene Valley Harrier climbed to the summit after finishing third in the Heckington 10 in a time of 60.10.
She also moved to second place in the five-mile rankings after placing second in a Nottingham race in 29.40.
Both times were close to personal bests and continued her best run of form for a couple of years.
The English international also leads her age group rankings over one mile and 10,000m on the track and 5k on the road.