Jason Arday, a professor at the University of Cambridge and the youngest black professor appointed there at age 37, is facing intensified scrutiny over his claims regarding sporting achievements and charity fundraising amid an ongoing plagiarism investigation.

Prof Arday has publicly recounted a series of remarkable endurance running challenges, including completing 30 marathons in 35 days, running 300 miles in three days on a treadmill, and covering 600 miles in six days. These feats were reportedly undertaken partly with a hairline fracture, and he has claimed these efforts raised substantial funds for charity—at one point stating he had raised £5.5 million for more than 70 causes. However, experts in ultra-distance running have expressed skepticism about some of these assertions, given the extraordinary nature of the distances and the lack of documented evidence typically expected for such athletic accomplishments.

Damian Hall, a former British record-holder in ultra-distance running, noted that while running 30 marathons in just over a month is plausible, sustaining 100 miles a day for six days would place an athlete among the world’s elite. Hall also mentioned he was unfamiliar with Prof Arday in ultra-running circles and highlighted the absence of public records, such as GPS data or social media posts, which are common among long-distance runners to verify their performances. Another ultra-distance expert pointed out that the world record for a six-day run—650 miles—was achieved on a controlled track with extensive support, contrasting with Prof Arday’s description of running undulating road routes with minimal assistance.

Additional doubts have arisen regarding Prof Arday’s claims of having played professional football and snooker. While he has said he played football professionally and joined a professional snooker tour, there are no records supporting professional status in either sport. Snooker databases show he competed as an amateur in at least one tournament but never turned professional, and football databases contain no evidence of him playing at a professional level.

Questions have also been raised about the extent of his fundraising. Although Prof Arday and some online biographies attribute significant fundraising totals to him, representatives of charities such as Shooting Star Children’s Hospices have confirmed lower amounts—around £10,800 raised on their behalf—while Shelter declined to disclose figures. Public fundraising platforms related to his running challenges record comparatively modest sums.

Biographical references to some of these feats have been adjusted in recent months by institutions that previously awarded him honorary degrees. For example, Anglia Ruskin University altered mentions of the 600-mile run from six days to 12 days in their online materials. Notably, Prof Arday’s forthcoming memoir, Great and Unfortunate Things, which chronicles his life from overcoming autism-related challenges to academic success, does not reference the 300- or 600-mile runs or the £5.5 million fundraising claim.

The plagiarism allegations concern striking similarities between Prof Arday’s doctoral thesis and the work of another researcher. Both the University of Cambridge and Liverpool John Moores University, which awarded his doctorate, have investigated and dismissed the claims of misconduct. Cambridge has described the allegations as part of a campaign aimed at undermining Prof Arday’s credibility.

Prof Arday has not publicly responded to requests for additional evidence supporting his sporting and fundraising achievements. The ongoing discussions highlight a complex situation involving an academic figure whose personal narratives and professional integrity are under examination.