Photo courtesy of Dola Holland ATOP KATAHDIN — Ten-year-old Liam Holland celebrates after reaching Katahdin on Aug. 4, completing the 2,197-mile Appalachian Trail with his father, Dola, in 172 days. This 10-year-old just completed the Appalachian TrailBy Susan Bard, Bangor Daily News Outdoors Editor Ten-year-old Liam Holland and his father, Dola, set off on the Appalachian Trail on Feb. 13 and summited Katahdin on Aug.By Susan Bard, Bangor Daily News Outdoors EditorTen-year-old Liam Holland and his father, Dola, set off on the Appalachian Trail on Feb. 13 and summited Katahdin on Aug. 4, covering 2,197 miles in 172 days. Photo courtesy of Dola HollandATOP KATAHDIN — Ten-year-old Liam Holland celebrates after reaching Katahdin on Aug. 4, completing the 2,197-mile Appalachian Trail with his father Dola in 172 days. Photo courtesy of Dola HollandHEADQUARTERS — Dola Holland and his son Liam stop at Appalachian Trail Conservancy headquarters in Harpers Ferry, West Virginia. Long term, he hopes to hike Vermont’s Long Trail, return to the Appalachian Trail and possibly tackle the Pacific Crest Trail.