Welcome to the place where you will find 9 out of 10 of us have low back issues. On a good note, that brings you an abundance of ideas and helpful tips to aid in your training and relief. My foam roller has been my buddy for years. Try and use it daily and super important to roll all leg and glute muscles as tight ones play hell on our low back and hips. Something we often overlook is good/proper footwear. A great area to start and make sure you are wearing good shoes.. especially if you say you experience increased pain upon walking and running certain distances. Keep us posted and roll roll roll.