DULUTH, MN (KDAL) - Registration will begin for the William A. Irvin 5-k on Thursday. The online registration is limited to the first 1900 people, the same as last year when race capacity was reached on April 30th. The run will be held on Friday, June 21st as part of the Grandma's Marathon weekend. The entry fee is 30 dollars. Get more information and register by visiting GrandmasMarathon.com.