5.5 Km

And I didn't even have to go out of campus ... well except when hopping between the Gymkhana campus and the Main Campus:



Reception is slightly poor in the tree cover which is why I appear to be going through buildings. Here's the route:

• Start at PD
• Exit Gymkhana Gate, and enter through Main Gate
• Ride to end of Gulmohar Marg
• Turn around near new Staff quarters
• Take unnamed road from Gulmohar Marg onto Tala Marg
• Turn left onto Silver Oak Marg
• Go up Nilgiri Marg, turn right towards CSA
  
• Turn left onto Ashoka Marg
• Ride down Tala Marg again, taking a left onto Mahogany Marg
• Exit via Main Gate and re-enter Gymkhana
• Stop at PD

Takes 19min, at an average of 17kmph and a max of 30kmph.