There is a Facebook event to RSVP but you will need to ask to join the PPTC Members Discussion group, https://www.facebook.com/events/1463953043734534/. If you don't have a Facebook account, or rather not join the group, simply show up at the side of The Picnic House at 9 AM on Sunday April 8, 2018. That would be the left side when you face the building from the road. Note that the word is spelled backward, starting with K and so on, so that when it's done we'll be near some businesses for coffee and such.
The better-designed map in Gmap-Pedometer above saves a side trip to the edge of the park to connect the R and the "A". Also, the "A" is better executed with no extra lines on the left side. When I did the run, the Green Market was in full bloom and there was only narrow path to go between the park and the arch.
Here is very wordy instruction for making R and K.
Start at the bottom left of the letter K, which is the side of The Picnic House. Follow the road to a T intersection then go right until you hit another T intersection then trace your way back to the other T intersection. Note that as there is no street corners like when we run on the street, I try to make use of the road intersections as often as possible.
Go up to the next intersection but don't actually touch it. I want a little gap between the top of the K and the bottom of the R. Again trace your way back to the T intersection. Make your way diagonally across the meadow. You should finish at another T intersection. The K is done!
To make the R, make your way across the meadow again, also diagonally to another T intersection on the other side. First do the bottom of the R by going down toward the top of the K, but don't actually arrive at the intersection because I believe the letters look better if they don't actually touch each other. Turn around and go up the road, follow the curve to form the top of the R as well as the right side. Again look for another T intersection then make your way across the meadow one last time. Go up the right side of the R one more time toward Grand Army Plaza.
I love serifs and probably will make them for the K and the R in the actual run. Just stick with me if you want it done.
"A" is a bit more challenging because a few times it involves stopping the watch and resuming it.
So we finished the R should have traced our way back to the top right corner of the R. Take the path that goes under West Drive toward Grand Army Plaza. Where the letter P is on the map, pause your watch/app then run through the arch, past the fountain, all the way to Plaza Street East. The letter R on the map means you resume the watch/app. Run back toward the arch but along Plaza Street West. Don't cross the street to the side of the Green Market. Instead, go to the fountain, then pause the watch/app again. Run to Plaza Street West and Lincoln Place then resume. Run back to the arch one more time, along Plaza West but this time go as far east of the plaza as you can. Go across the street back into the park to where the letter P is and pause. One more time run through the arch, past the fountain, and onto Plaza Street East, but a little distance off the other point you made earlier. Resume watch/app. Run back to the arch along Plaza Street East. Do not cross the street to the Green Market. Instead go to the fountain and pause watch/app. Run to Plaza Street East and Butler Place then resume watch/app. The really difficult A is finally done!
Run along Plaza Street East to Vanderbilt, turn right to go up Vanderbilt to St. Marks Avenue. Turn right to go along St. Marks then turn right into Underhill Avenue. From Underhill, turn right into Park Place. Go past Vanderbilt a few step and stop watch/app. The whole thing is done!
To have a rounder letter P, do not wait until you are actually at the corner of Underhill and St. Marks to turn. Instead, run on the northern side of St. Marks and start crossing St. Marks when you are about the length of three cars from the corner. Likewise, don't start going straight down Underhill after making the turn. Run to the western side of Underhill and aim for the middle of the block. Execute similar maneuver for the turn at Underhill and Park Place.