Registration for the 18th annual William A. Irvin 5K opens at 12:01 a.m. Thursday.
The field limit for the June 17 race is 1,700, an increase of 200 from last year when capacity was reached in less than a week. To register, visit GrandmasMarathon.com> beginning Thursday. The entry fee is $30.
Registration remains open for the 35th annual Grandma's Marathon, while it's closed for the 21st annual Garry Bjorklund Half Marathon.
