Runners seeking sold-out race entries risk scams. Montreal's Leila Mekki Berrada lost money twice to fraudsters. Organizers report multiple scams. Fraudulent sellers can disappear after payment.

Demand for race entries is high. Toronto Waterfront Marathon is sold out. Some runners transfer bibs through official channels. Others use unofficial platforms, risking fraud. Organizers warn against unofficial transfers. Read more everyday miles coverage.

Major races prohibit bib transfers. The BMO Vancouver Marathon warns of disqualification. The Chicago Marathon bans transfers. Fraudulent sellers can exploit the informal market. Always check event policies and use official processes. Related: Two Runners Injured by Wrong-Way Motorcycle in Kuala Lumpur Marathon.

This original Runner World brief is based on reporting from Canadian Running. Visit the source for its complete reporting, context and any later corrections.