Mary Carter was crossing Hoover Avenue from south to north when a vehicle going east hit her in the road, according to OSHP.
The vehicle did not stop and left the scene.
The suspect vehicle is believed to be a black 2006-2013 Chevrolet Impala. It may have damage to the front bumper area.
Troopers are asking for anyone who witnessed the crash or who has information to call the OSHP Dayton post at 937-832-4794.
Trotwood and Dayton police also responded to assist troopers.
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