Summit trail is about 1.1 miles long and is the hardest of all. It took us about 35 min to get to the top and about 30 min coming down. It's a great workout, make sure you take appropriate shoes; I took my running shoes and were too soft for the rocky trail. The trail offers great views of the city along the way, rewarded with a magnificent view from the top. There is a water tap at the bottom where you can refill your bottle. And there's plenty of parking too. Take sunblock too. Great little workout in the middle of the city. Ah, and dont fidget with your phone, I dropped my Iphone and cracked the screen :(