They wanted to make a difference and so they started walking, and ended up covering forty miles in three days.

A group of Florida students took this weekend to honor Trayvon Martin.

The group calls themselves the "Dream Defenders," most of them are students at Florida Universities.

They marched from Daytona Beach to Sanford seeking justice.

Police say the 17-year-old was shot and killed in late February by neighborhood watch volunteer, George Zimmerman.

Zimmerman says he acted in self defense.