There are three parking lots close to the trail head and all will be full so starting early is a good idea. There are outhouses at the beginning of the hike and that's it. There is also a hiker’s registration sheet. If you decide to sign in (a good idea) make sure you don't forget to leave the second part of your paper before you leave the park so the Rangers know you are safely off the mountain. To start the hike I would say the best way is to go right after the bridge and up the hill. Follow the Lynn Loop Trail when you get to the top. Soon you will find the trail head for Lynn Peak. The sign at the trail head says 6.2 km and less then what the Lynn Park Trail information, it says 8.8 km. Vancouver Trails has it listed at 9 km.
The trail starts off OK but soon is lots of loose rocks. Going up is fine but coming down was a little tricky. I had my poles and I suggest you bring them.
You will climb for a good hour. I found the first part tiring as it was mostly up. Soon you will come to a lookout and An Enchanted Forest. There will be about another hour and then you will come to another couple of lookouts and then the last few steps to the top. I found the second part not as hard. It is steep but it doesn't feel steep and it's all enclosed in a beautiful forest with old growth trees. There are some muddy sections and a small amount of scrambling. It is a great cardio workout. It is best to do this hike on a clear day. This hike was beautiful and even though the rocks are quite tricky coming down I still found it very enjoyable. When you come out of the hike I would say to go back the way you came up to the parking lot because if you go right you will have to complete the Lynn Loop Trail and I would save that for another time as it is another 5.5 km. Happy & safe trails!