Running 38:05  6.39 km (5:58 / km) +72m 5:39 / km
ahr:132 max:146 shoes: R-NB 891's
AM Run, from Ori's Gymnastics. Found a bit of the Chester Valley trail, from Mill Ln to 401 on the run - no map, but knew it was somewhere north of mainline. Looks like that section is officially closed, but the rail is gone the the footing is semi-okay (rocks from the train tracks, plus several years of forest leaf litter...) Not sure why it's 'closed' although the neighbor privacy, and safety of road crossings could be concerns, esp. these days...
Running 34:45  5.0 mi (6:57 / mi) +89m 6:35 / mi
ahr:167 max:173 shoes: R-NB 891's
Valley Forge 5 mile loop. All on grass, mostly inside the paved trail within 6 feet, although crossed over the pavement a few times for various reasons.
Both corner's the Simkiss asked if I cut (I didn't) a few years ago have now been cut by the park service - they've paved the portions that cut the corner. They've also added a road segment SE of Mt. Joy, connecting E Inner Line Drive to S Outer line drive at approximately the shortest sport. Not sure what the final plan is there.
Slower than my paved PR by 3 minutes.
I think at least in part I was dehydrated, as I was fighting a non-trivial migraine that evening.