“A determined marathon runner is preparing to serve up a unique challenge by attempting a Guinness World Record while dressed as a tennis player at the upcoming London Marathon.

The participant plans to complete the 42.2-kilometer race wearing a full tennis-inspired outfit, adding an unusual twist to one of the world’s most demanding endurance events.

Costume-based marathon records are popular at the London Marathon, where runners often combine athletic achievement with creativity, charity fundraising, and entertainment. Competing in themed outfits can significantly increase difficulty due to extra weight, reduced comfort, and limited movement.

Officials from Guinness World Records are expected to assess whether the attempt meets official standards, including costume requirements and verified finishing time.

Supporters say the challenge is about more than records—it’s also about inspiring others to pursue bold goals with humor and determination.

The London Marathon annually attracts elite athletes alongside thousands of amateur runners, many of whom use the event to raise money for good causes or complete personal milestones.”