TIAA Philadelphia Marathon releases additional 3,000 registration bibs, growing the previously sold-out marathon to 20,000 participants

PHILADELPHIA, May 21, 2026 /PRNewswire/ -- Philadelphia Marathon Weekend today announced TIAA has signed on as the new title sponsor for the Philadelphia Marathon. The newly named TIAA Philadelphia Marathon connects the tenacity it takes to train and cross the finish line with the long-term mindset needed to build and achieve lasting financial security.

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