The General Grant Tree Trail is located in Kings Canyon National Park about a mile north and west of the Grants Gove Visitor Center. To get there from the Visitor Center, take the Generals Highway north and then go left on Grant Tree Road. You can drive to this trail or hike from the Visitor Center.
I went on a Tuesday morning with my wife in mid-July and really enjoyed walking the General Grant Tree Trail and looking at the massive General Grant Tree. We paid $1.50 for the trail map but it turned out to be a waste of money as the trail is very short and is paved and is only a half mile loop (and there are signs everywhere). We went in the morning and there was plenty of parking next to the trail head. There was also a large RV parking lot close to the regular parking lot.
The General Grant Tree is one of the world's largest living things and is the 2nd largest tree in the world. It is named after Civil War General and President of the United States Ulysses S. Grant. This is an amazing tree and is so huge it does not look real (it looks like a prop from a movie set) There are also quite a few other giant sequoias along this trail that will leave you in awe. While on the trail don't miss the Fallen Monarch, a massive sequoia tree that fell and was burned out creating a long tunnel you can hike through. Next to this fallen tree are interesting 100 year old pictures that show how little this tree has changed (for some reason it does not rot and decay). I thought the huge fallen tree was really interesting.
Overall I really enjoyed the General Grant Tree Trail and highly recommend that you take this hike as the trees are amazing and the hike is easy. We went here in the morning and it was not busy but rumor has it that the parking lot gets packed later in the day.