DULUTH — The 36th Garry Bjorklund Half Marathon and 33rd William A. Irvin 5K were both declared sellouts Wednesday night less than two hours of registration opening at 7 p.m. The size of the half marathon and 33rd William A. Irvin 5K were both decreased. The 50th Grandma’s Marathon and 36th Bjorklund Half Marathon are scheduled for the morning of June 20, 2026, while the Irvin 5K will be run the afternoon of June 19, 2026. It was originally posted at 8:45 p.m. when the Bjorklund Half Marathon sold out. ADVERTISEMENT2026 Grandma’s Marathon race entry fees and capacitiesGrandma’s MarathonRegistration limit: 9,500Entry fee: $155Garry Bjorklund Half Marathon — SOLD OUTLimit: 7,000Fee: $145William A. Irvin 5K — SOLD OUTLimit: 1,500Fee: $55Full Great Grandma’s Challenge — SOLD OUT(Entry into Irvin 5K and Grandma’s Marathon)Limit: 500Fee: $240Half Great Grandma’s Challenge — SOLD OUT(Entry into Irvin 5K and Bjorklund Half Marathon)Limit: 500Fee: $230