They came by the hundreds to raise money and show support for the people affected by the Boston Marathon bombings.
"It's hard to wrap your head around even after the fact," Amy Cosart, a local runner said.
Monday, local runners participated in a 2.6 mile solidarity run. Several cities across the country took part, one week after three people were killed and more than 150 others were injured at the Boston Marathon.
"When that happened it just impacted everyone," Alan Morrison, a local runner, said. "That could have been my family there, that could have been me crossing the finish line."
Ottawa Hills runner Tim Corbey was there. He crossed the finish line minutes before the first explosion.
"We didn't know anything for about the first 15 minutes until a cop told us to run," Corbey said. "I run with Dave's running group. These are really good close friends so to me it was like a personal attack."
All of the money collected will help the victims. Click here to donate.