Year after year, the 500-mile trek across Spain known as the Camino de Santiago attracts pilgrims and adventurers from around the world. Some want to check off an item on their bucket list. Others are working through grief or making difficult decisions. Many are searching for deeper meaning in life. Kevin O'Brien walked the Camino to pray. Each day of the pilgrimage, he asked God to give provision and protection to every member of his family, and...