What an adventure! I ran the perimeter loop and luckily the weather cooperated. I started at 72nd st on the west side at 8AM and ran north towards the GWB, clockwise around Manhattan. I ran with a camelback carrying a filled water pack plus gels and snacks. Water fountains are turned off for the winter and I didn't stop in any shops so it was unsupported. I started running into a headwind up to the bridge then Inwood, then crossed east and started to run down along the east river. Tackled most of the elevation in the first ~10 miles, followed by a relatively flat course the rest of the way but with stop lights on the southbound stretch down the east side (not too easy on the hip flexors/quads). By the time I made it to the very bottom of Manhattan, the sun had come out and I knew I had < 7 miles to go along the West Side Highway. Finished just before 1:15PM and immediately laid down in the grass. Worth nothing that the first and last song I listened to was "Chariots of Fire" theme - a recommendation from my dad. So grateful to have the opportunity to go for my goal!