On April 21, 2024, Rice ran another marathon for the record books. She clocked a 3:33:27 in London, the fastest ever by a woman 75+. This performance beat her previous world record from October, 2023, when she ran 3:34:32 in Chicago.

Rice won her age group title in London by 30 minutes, and also finished 11 minutes ahead of the fastest male runner in the group. This duplicated what she achieved a year earlier at Boston, where her 3:33:15 put her more than 20 minutes ahead of the first male, and under the previous male record for the age-group. (This year, the Boston male record for 75+ was improved to 3:28:43 by Gene Dykes. Boston is a downhill, point-to-point course that is not considered eligible for world records.)

After her big win in London, Rice received a visit from Yuko Gordon, who ran in the first women's Olympic Marathon in 1984. The previous week in Boston, Gordon finished in 3:46:40.

UPDATE: On February 11, 2024, Rice improved her own 75-79 world record in the Melbourne FL Half Marathon. She finished in 1:40:42 on a warm day and a course that crossed several bridges (hills).

World record, Melbourne Half

That bettered the 1:41:53 she had recorded two months earlier in the Jacksonville FL Half Marathon. She also ran a 1:41:55 in January at the Naples FL Half Marathon.

"I'm still hoping to get under 1:40," she said.