Parkrun has announced a significant policy change, restoring sex-based categories of female and male across all its events worldwide. The decision, which takes immediate effect, means that parkrun's results and age-grade calculations will now be categorised by biological sex rather than self-identified gender — a change that aligns parkrun with the policies adopted by World Athletics and most national athletics federations in recent years.
The announcement follows years of debate within the parkrun community about how best to balance inclusivity with competitive fairness. Parkrun has always positioned itself as a non-competitive, community-first event — its official stance is that it is "not a race" — but the reality is that many participants use parkrun's timed results, age-grade scores, and course records as meaningful competitive benchmarks. The tension between parkrun's inclusive ethos and its timed, recorded results has made this one of the most sensitive policy decisions in the organisation's history.
The practical impact will be felt most directly in age-grade calculations and course records. Age-grading — the system that adjusts finishing times for age and sex to produce a comparative percentage score — requires accurate sex categorisation to function fairly. Course records, which are prominently displayed on each parkrun's results page, will also be recategorised. Parkrun has confirmed that records set by athletes competing outside their biological sex category will be reviewed and adjusted.
The broader context is important. Parkrun's 10 million registered participants span an extraordinary demographic range — from elite club runners to people walking their first 5K. The organisation's ability to serve all of these participants while maintaining a results system that is perceived as fair is a genuine challenge with no solution that satisfies everyone. The policy change represents parkrun's judgment that sex-based categories are the most defensible approach, consistent with the governing bodies of the sport it operates within.