We had one day in Dehradun, before we proceeded up the hills for our Dayara Bugyal trek. And our request to our friend and host in the city, Tapas was to take us some place where we could do long walks or even run. He didn’t have to think much and soon we landed at the sprawling campus of the Forest Research Institute (FRI). A 450-acre campus with many long stretches of internal roads/pathways and a huge lawn (where PM Modi once did a massive Yoga event) is a runner’s/jogger’s dream. The central building in itself is massive, which combines…