10/06/2026
⚠️ Bib Fraud Isn't Harmless — And It Happens More Than You Think!
😔 And we're sad to share this happened more than once on Sunday's event.
As race organisers, we're passionate about creating safe, fair and enjoyable events for every participant. That's why incidents involving bib fraud and unauthorised runners are something we take extremely seriously.
We identified several individuals attempting to participate in the Mizuno Swansea Half Marathon using counterfeit race numbers and in this instance "Sam" ran as "Steph" running on the number assigned to her.
Thankfully, on this occasion the number did not record an official result. However, it raises an important question: Why would someone want to run under a false identity?
Some people view bib swapping or bib fraud as harmless. They see it as a way for a friend to take part or a shortcut around event rules. The reality is very different.
Every race number is linked to a specific participant. That participant's emergency contacts, medical information, age category, club affiliation, photographs and results are all tied to that bib.
When someone runs under another person's identity, they compromise the integrity of the event and potentially the safety of everyone involved.
Consider what could happen if that runner suffered a medical emergency on the course.
🚑 Our medical teams would be working from incorrect information. Emergency contacts would be wrong. Medical conditions may not be known. Valuable time could be lost while attempting to identify the participant correctly.
In the most serious circumstances, organisers could find themselves contacting the wrong next of kin, causing unnecessary distress and confusion for multiple families.
Bib fraud also impacts the fairness of competition.
🏆 Results, rankings, age-group placings, club standings and qualification times can all be affected. Every time an unauthorised runner takes part, they risk depriving another participant of a result, position or achievement they have legitimately earned.
Most importantly, it undermines the trust that makes organised running events possible.
When runners stand on our start line, they do so with the expectation that the event is safe, fair and accurately reflects the efforts of every participant. That trust is something we work incredibly hard to protect.
So if you're considering running with someone else's bib, or allowing another person to run with yours, please think carefully.
It's not just a breach of event rules.
It can compromise participant safety, affect race results, impact fellow runners and create significant challenges in an emergency.
For us, this isn't about enforcement for the sake of it. It's about protecting the safety, fairness and integrity of the sport we all love. 💙