A large gathering observed a moment of silence.
Three people were killed and more than 260 others injured in a bombing at last year's Boston Marathon.
The outdoor ceremony on Tuesday included the toll of church bells, followed by a flag-raising.
Many runners from Northeastern and Central Pennsylvania take part in the Boston Marathon. Sharon Gaeta talked with them about the one year anniversary of the tragic bombings.
Copyright 2015 Nexstar Broadcasting, Inc. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed.