MIT Observatory

This ride covers some new territory for NSC, using some of the scenic roads of the northwest suburbs of Lexington, Concord, Groton, Westford and Carlisle.  There are woodlands and farms as well as significant historic sites.  There is a detour to the MIT Haystack Observatory on the long route and both the 50 and 54 go around Lost Lake.

Note, all routes have been updated - especially the 2 longer ones, so please be sure to download the latest versions.
 

Road ride
Pat Stabler
Tom Evers
Sunday, August 10, 2025 at 9am
10 Maguire Rd
10 Maguire Rd.
Lexington MA 02421
Google map

Please park in the lot at 10 Maguire Rd, Lexington, across from Revolution Hall (not in their lot!).  

There are trees, but no bathroom at the start.  At 9.9 miles, however, there are flush toilets at Great Brook Farm's day use parking lot.

Routes
Please download this latest version of the routes before each ride.
Route Miles Elev.* Print Files
Lexington Loop 33 miles 33 1,292 Cue sheet Send to device
Lexington Loops 50 49 1,990 Cue sheet Send to device
Lexington Loops 54 52 2,415 Cue sheet Send to device
* Elev. is the elevation gain in feet.
Route maps
33 miles
49 miles
52 miles
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