A tiny fold in your sock can become a big distraction after a few miles. Before setting off, take thirty seconds to get the fit right.
Pull each sock on evenly, smooth the fabric around your toes and heel, then check for bunching underfoot. Put your walking shoes or boots on and take a short lap. If you feel a ridge or pressure point, stop and adjust it now rather than hoping it will settle.
During a longer walk, pay attention when you change footwear or take a break. Socks can shift as you move, especially after you have taken your boots off and put them back on.
At the end of the day, turn socks out to air and check for grit before your next outing.
Field tip: A smooth start beats a mid-walk sock rescue.