Robbins Farm to Aeronaut
Start at the lookout with the whole Boston skyline in front of you, then it's all downhill (literally) to the Minuteman Bike Path. Cruise past Spy Pond and Alewife, pick up the Somerville Community Path, and roll into Union Square with pockets full of gift cards and plenty of people to give them to. First stop: Aeronaut. Warm up, hydrate, high-five.
