FKT: Brian Butterfield - Boroughs Loop (MA) - 2020-09-12

Gender category
Route variation
Standard Loop
Start date
Finish date
Total time
4h 27m 39s


  • September 12, 2020 at 5:58:13 AM EDT
  • 53 deg clear and crisp
  • Started on the southern end of the loop in Beals Preserve in Southborough and proceeded in the clockwise direction.



  • September 12, 2020 at 10:25:50 AM EDT
  • Total Time - 4:27:37
  • 61 deg, sunny



  • Hoka Speedgoat 4
  • Salomon Adv Skin 12L
  • Black Diamond Cosmo Headlamp



  • Five 500ml bottles (2.5 L). I had initially planned to do the route self-supported, however I forgot to drop water the night before, so my wife dropped two stashes for me in the morning.
  • Dropped 2 bottles at Marlborough High School, and 1 at the Parmenter Rd crossing
  • All liquid calories, 960 calories of Maurten, and 300 calories of Tailwind
  • I finished with 2 extra bottles on me, I need a lot less due to the cool temperatures



I did much better on this run than I did back in August, I didn’t make any navigation errors and I felt much more confident about the route.  I had Adam’s GPX file loaded into Gaia on my phone and used this exclusively for navigation, and it worked well.  I believe I nailed the navigation this time, so I suggest anyone who makes an attempt to use my GPX/TCX file for navigation.  The only small issue I had was after crossing the railroad tracks in Southborough.  I think the official trail goes down a fairly unused section of powerlines and the weeds were very tall, so I had to walk.  There are other good trails running through here, but for some reason the Boroughs Loop trail runs down a poor section, perhaps the trail committee could change this?


The weather was perfect for the route today, so that had a huge boost on my time.  Although I do believe there are a couple minutes to be had out there.  Overall a great day and looking forward to them completing the trail in Marlborough!