Wearing blue and yellow, the colours of the Boston Marathon, runners in the Ottawa Physio Race are showing their support.

It’s hard to describe the feelings those people must have been going through, all the emotions, said runner Janice Lewis.

Monday’s Marathon Bombings left 3 people dead, 170 injured, and tens of thousands in stunned disbelief.

The tragedy changes the tone for Heather McNeil, running on her 30th birthday. She and her friends initially signed up to celebrate graduating from physiotherapy, but on this day they have a new goal.

“It’s obviously really emotional. I'm just happy everyone is safe here,” McNeil says.

While security is not a concern for organizers at the Ottawa Physio race, the Boston bombings have scarred a sport known for its endurance.

Race volunteer, Elyse Pratt Johnson says: “If we keep running, we will support those that were traumatized by that, and hopefully they will keep running too.”

Ontario Labour Minster, Yasir Naqvi, was also at the run.  “I along with the community want to send a very strong message that nobody will scare us.”

Following the race, in a show of solidarity and remembrance, a moment of silence to honour the Boston Victims.

‘We dedicate today’s run to those affected by such a senseless tragedy.”

A moment of silence was also held prior to London England’s 36,000 person marathon. While security was nearly doubled in that city, it didn’t stop runners from showing their support.

Organizers at Vancouver Sun Run say they saw a surge in registrations in the days following the Boston Bombings.

As well, runners taking part in Toronto’s Yonge Street 10k wore special bibs.

Back here at home, the same message.“I want to make sure they know everyone's supporting them, the runners, the community we stick together and support them,” said runner Janice Lewis.