Arapahoe County's open space operations manager, Glen Poole, has shared some Mother's Day hikes for you. The 17 Mile House Farm Park in ArapahOE County features a historic barn, windmill, and house, while the High Line Canal stretches 40-plus miles and is easy to tailor for mom's comfort. Poole recommends the visiting mother-in-law strategy, which involves a bike ride and several bridge crossings over the South Platte River. The exit plan involves a 31-mile drive to Denver International Airport.