By Michelle Durham

PHILADELPHIA (CBS) – There are many races scheduled throughout the Delaware Valley this weekend. And the issue of security is certainly in the forefront following Monday’s tragic events at the Boston Marathon.

Howard Nathan is President and CEO of The Gift of Life program. Their Annual Dash for Organ and Tissue Donor Awareness walk/run is Sunday starting at the Art Museum.

He says, “We’re very saddened by an event like this.”

What additional security provisions will he take now? “We’re going to make sure that we’re going to have increased security — private and with the Philadelphia Police, but also to have more paramedics then we usually do.” Just to make people feel safe, he says.

Jill Lafferty is the spokesperson for Saturday’s Spring Zing in Ambler. She’s expecting about 700 to 1,000 people. She says they have scores of police officers, road marshals and parents.

“We have kind of beefed up how many marshals we’ll have, but it wasn’t because of the occurrences (at the Boston Marathon). It’s because we always have kids on the road.”

Across the bridge in Voorhees on Sunday, the Carz N’ Toyz 5K will be held.

Virtua Foundation Vice President Rose McManus Coleman says, “We will begin the race with a moment of silence for the victims.”

They all say their events will go on and they’ll do everything they can to make them fun and safe.

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