I've always heard good things about this one, but how challenging is challenging?    I'm a somewhat new but definitely slow runner (13-15 min. pace/mile) and have never run on trails.  Any other feedback from people who have run it before?  And is the 5K race clearly marked, or would a back of the pack runner like me be alone and lost in the woods?! 

You will love it!   And lost, no, I think there is a misconception with the word "trail".  I think the problem is the English language does not have enough words for "trail".  For example, have you ever been on the Montour Trail?  It is one of those rails-to-trails projects: totally flat, mostly cinder, tho some parts are paved.  I DO NOT consider an asphalt walkway/bikeway a "trail", yet it is still called that.   As for Trail Runners, those are the people who go off into the dep woods and run through creeks, over logs, and get all muddy.

What we have in Schenley Park are fairly wide, mostly cinder - a few grassy/dirt areas - trails that, no, you won't get lost on because there is sort of only one trail around the upper part of the park.  Lower Schenley has an extra trail that loops around Panther Hollow Lake.  This is really a fun time, a must race for everyone!!!

It was really nice track to run and lots of Raffles and prizes being distributed after the race.I participated in Pittsburgh 5K as well, but this one was much more interesting and better without a doubt. I don't understand one thing that almost everyone performed really good. A lot of them had extraordinary performance. Do many people participating in this run are professional athletes or marathon runners? The average performance was much better than that in Pittsburgh 5K run this time. That is a big surprise to me since this is little bit more challenging that Pittsburgh 5k as we have up-hill and down-hill track while Pittsburgh 5K was almost flat.

I run atleast one race a month and I loved this course. If was my first year running it and probably my favorite. I love how it is not on the normal flat montour trail and road. I definelty would agree and just say a dirt road as opposed to trail. It is nice and wide for all to fit. It was a lil challenge but whats a race without it, Mostly downhill with a nice up hill finish.

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I enjoy the Greenfield Glide and I've run the race off and on since 1989.  It is a challenging course and I do think that it tends to attract a fitter class of runners as one participant observed.  And it is deceptive insofar as going down you can easily be running a PR for the time (if you could keep it up) but on the way back up, as you pass Sherpas hauling oxygen tanks, you can lose the time.

One point: on the race website, you might want to direct people to the Miles of Smiles Website (or whatever it was...) for the results.  I kept thinking they would pop up on the race website because they had last year's there.