I bought these trail running shoes to supplement my regular running shoes, as I do some off road running and hiking in addition to road running. I wore them for a 6 mile run/hike in Muir Woods the day they arrived. There were lots of steep inclines and declines we were running up and down during the trail. The tread on these Saucony Peregrine Trail running shoes performed fantastically! My boyfriend even noticed that I wasn't sliding down the hills either while running up or going down on them, but everyone else in our group was slipping. He said that after seeing how well the tread kept me on the dirt trails, he's going to get a pair for himself.<br />Because I was familiar with Saucony running shoes, I knew the fit would be perfect. I wear an 8.5 in my regular Saucony running shoes, so I ordered the Peregrines in 8.5 as well. They fit perfectly. The offset was 4mm, whereas on my regular running shoes, the offset is 8mm. That took a little getting used to, but other than that, the shoes were comfortable and I was able to run the 6 mile, 850 ft. elevation gain trail without any problems with the shoes. I'm looking forward to my next good trail run!