Theresa Kutsch organizes CNN group on Run for Boston iReport . He started tearing up as he told me how dozens of his friends had come to the race , holding signs with his name and face on them , to support his 100th marathon . 99 runners pledge to run races in solidarity . Sutter : The running community has rallied around the tragedy . iReporter John Sutter : ' I pledged to run for those who no longer can '
Theresa Kutsch organizes CNN group on Run for Boston iReport . 99 runners pledge to run races in solidarity . Sutter : The running community has rallied around the tragedy . iReporter John Sutter : ' I pledged to run for those who no longer can '