Isabel Lahn-Schroeder, a social worker at Lenox Hill hospital, said she lost her engagement ring along the route, likely somewhere around Central Park South.
She described the ring as having multiple stones in the shape of a flower.
The pride and joy she felt after completing the NYC Half quickly turned to horror when she realized the engagement ring she received on Halloween was missing.
Schroder says she retraced her steps. She went to lost and found and even to the police precinct, but to no avail.
The ring is a family heirloom that had been passed down in her fiancé's family for generations.
The soon-to-be bride said she has a pretty good idea of where she may have lost the ring.
Now she's hoping that by putting her story out there, perhaps a good Samaritan will help reconnect her with the precious ring.
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