With more than 3,200 runners in this year 's annual Corrib Classic 5K blasted through last year 's previous record of 2,800 racers .
This year 's annual Corrib Classic 5K is the 18th annual race through West Roxbury .
With more than 3,200 runners in this year 's annual Corrib Classic 5K , the 18th annual race through West Roxbury , blasted through last year 's previous record of 2,800 racers .