We visited Iao Valley State Park this afternoon and although it was raining we were glad to see what the Western part of Maui was like.
The experience is a quick one. You literally park, have about half an hour worth of walking and picture taking. Nothing strenuous at all. There were stairs everywhere. If you walk up you'll get views of the Needle and the valley. If you walk lower you'll be right next to the stream. Make sure you have memory on your cameras cause the landscape is stunning. It felt like were in Jurassic Park.
We couldn't see the top of the Iao Valley Needle cause it was so foggy but didn't feel like we were missing out on too much.