Bib Transfer

Officially transferring your race registration to another person. Policies vary by race; some prohibit it.

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Understanding Bib Transfer

A bib transfer is the process of officially reassigning your race registration to another person. If you can't race due to injury, schedule conflicts, or other reasons, some races allow you to transfer your bib to a friend, family member, or stranger (often sold on running forums).

Policies vary dramatically by race. Some races (particularly smaller ones) allow transfers for a fee ($25–$50). Major marathons typically prohibit transfers entirely — your bib is non-transferable, and running under someone else's bib ("bib muling") is against race rules and can result in bans for both parties.

Running under someone else's bib is dangerous: emergency medical information is linked to the registered runner, not the person wearing the bib. If you collapse wearing someone else's bib, medical responders will have the wrong health history, allergies, and emergency contacts.

Key Facts: Bib Transfer

Key facts and insights about bib transfer that every endurance athlete should know.

Transfer policies vary by race

Transfer policies vary by race: some allow it, many prohibit it

Major marathons

Major marathons (Boston, NYC, London) generally do NOT allow transfers

Transfer fees typically range from $25–$

Transfer fees typically range from $25–$75

Running under someone else's bib

Running under someone else's bib ("bib muling") can result in lifetime bans

Pro Tips: Bib Transfer

Check the race's transfer policy BEFORE registering — know your options if plans change

If transfers aren't allowed, check if the race offers deferral to the following year

Never buy a bib from an unauthorized seller — it may be reported stolen and get you disqualified

If you must DNS, it's better to eat the cost than to give your bib to an unregistered runner

Frequently Asked Questions About Bib Transfer

Security and safety. Races need to know exactly who is on the course for medical emergencies, insurance, and security purposes. If a runner collapses, medical staff need the right health information immediately. Unregistered runners also create liability issues for race organizers.

Check for deferral options first (carry your entry to next year). If not available, consider it a sunk cost. Many runners offer their bibs informally, but running under someone else's name is against the rules and a safety risk. DNS (Did Not Start) is a valid, responsible choice.