DENVER -- According to a list of participants, 521 runners from Colorado took part in the Boston Marathon where a series of explosions have wounded scores of people and killed 2.
Since news of the explosion broke, worried relatives in Colorado have tried to contact friends and family using social media and cell phone calls.
Boston police have shut down cell phone service in Boston in order to prevent remote detonations, reported the Associated Press.
According to a registry for the Boston Marathon, 102 runners from Denver and 61 from Boulder signed up for the race.
A group from Runners Roost Colorado went to the marathon. According to a tweet from @RunnersRoostCO, all of the team athletes have been accounted for.
All of our Roost team athletes have been accounted for and are safe. Thoughts and prayers to all affected. Unbelievably sad #bostonmarathon
— Runners Roost CO (@RunnersRoostCO) April 15, 2013
At the store on Colorado Boulevard, workers were glueded to the TV watching coverage.
"It's devastating," said Ed Riegert, the marketing director.
He said the store had ten to 15 sponsored runners at the marathon today.
Riegert tried to reach them by phone, but had a hard time getting through. Eventually, through social media the group was able to connect with each member.
"It's horrible. I can't imagine," said John Boyd, a marathon runner. "It just hits you right in the heart. And for anyone who has run a marathon they can relate because you bring your kids, you bring your family to watch the event," he added.
Cynthia McDaniel, from Manassa, Colorado told FOX31 Denver she was in Boston for the race along with her husband. McDaniel said she finished the race and was walking back to the hotel with her husband when her husband heard the explosions.
"He was just outside the hotel at the time," McDaniel said. "To be honest, we’ve just kind of shut ourselves up in the hotel and are trying to avoid everything."
Cindy Edgar from Broomfield wrote in an e-mail to FOX31 Denver that her brother was in Boston to cheer on his wife, Kara, who finished in 6th place in the race.
"They are heart-broken and scared as we all are," Edgar wrote. "We have a great number of extended family in the area that were able to make it to the race and all have been in contact that they are safe."
"Their hotel is right near the finish line, the blast shook their hotel and was deafening," Edgar said. "They are in lock down at their hotel since the blasts. We are so grateful for their safety and continue to pray for the safety of those in the area and those injured or affected by this horrific event."
I am OK. Finished #BostonMarathon in 3:58, 2 minutes ahead of explosions..2 blocks away. Terrifying. Pray for the victims.
— JenniferSchubert-Aki (@jschubertakin) April 15, 2013
Denver police say no creditable threats here; BolderBoulder plans to continue as planned
Denver police said they are in contact with the FBI should they learn of any creditable threats in the metro area but "At this time, there are no known links to Denver and no known threats," said police spokesman Lt. Matthew Murray.
The third largest 10K road race int he country, the BolderBoulder, said they plan to continue with the race in May, but security will be top of mind.
Race director Cliff Bosley told the Denver Post security for the BolderBoulder has been a top priority since 9/11.
He said the race,which runs through Boulder and ends at Folsom Field on the University of Colorado campus, has hundreds of security people.
The Colorado Rockies said they will delay a game scheduled for Monday night against the Mets to Tuesday night.
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