Road running 40:00  4.2 mi (9:31 / mi)
shoes: Adrenaline 2
GSFC perimeter road. Legs feel good, but I sure was low on blood sugar.
Butterflies this run:
blackish swallowtail (unidentified)
Eastern Comma (Polygonia comma)
Zabulon Skipper (Poanes zabulon)
This was the first appearance of grass skippers (but I haven't been out here in a week). They're pretty hard for me to identify in the field, but this one I think is right. Likewise the Comma -- I didn't see the eponymous marking on the underside, but it had dark hindwings like summer form Commas.