Observation Point Trail is stated as a strenous hike. Its not too long only about 8miles round trip but with more than 2000ft elevation gain it is no walk in the park :). It took us about 2 hours to get to Observation Point and it was mainly steep and uphill. The views are worth every foot uphill. Once you have reached the final elevation the view into the canyon and onto Angels Landing is simply breath taking.
I have uploaded some pictures we took on the way up so you can see for yourself.