I have done extensive reading recently on the hike to see he lava flow. We are considering doing the hike with Volcano Discovery or Kalapana Cultural Tours. We will be in Hilo in mid-July with our daughters ages 16 and 11. I need to know how difficult the hike really is for middle aged - out of shape people. We walk in our neighborhood a couple days a week for 2-3 miles (flat and even streets) but we are not hikers. We do not own hiking shoes. Can you do the hike in tennis shoes? Our daughters are athletic so I'm not worried about them - just me. My husband really wants to see the lava flow but I'm very nervous about doing this hike. I'm hoping there are some folks that have done the hike recently that can give us good advice. I need to schedule it soon if we want to do it. Thanks!