This is a variation on the PHT hike that we offered over the winter. This time we will hike starting at the Gulf Branch Trail in Arlington, VA. The GBT is a short walk down to the Potomac River and the PHT. We will hike downstream along the Virginia shoreline until we reach Rosslyn and the Key Bridge into Georgetown. After a lunch break in a park, we will hike upstream on the DC side of the river using the…