Event Information  Sun April 16, 2023

ENTRIES are OPEN for 2023!      As of Presidents' Day weekend we are not yet full. 

Thanks to DCR Blue Hills Reservation for permitting this event !   

The 27th annual Trail Animals "Don't Run Boston" ultra marathons will be held on Sunday, April 16, 2023.  

- Still free.  Please donate to Mass Audubon Blue Hills Trailside Museum in lieu of an entry fee.   Also see new donation policy for late withdrawals after entry.  

Here is the Facebook group for the race:  www.facebook.com/groups/215982452785525/

This is a rugged event with a good dose of steep rocky trails interspersed with quite runnable sections. 

 For those of you who don’t know this run, here is what you get for your low entry fee:

A 50 mile run will start at 6 am.  

The 50K "event" has a start time of 8 am.  If you would like an early start you may start at 6 am.    Runners must complete the course by approx 7:30 pm. (Note actual cutoff time to be decided by permit and Ranger coverage)

Entry fee will be  $zero, however you will be asked to make a voluntary donation to "Blue Hills Trailside Museum" to support one of the important programs the Blue Hills offer to get people out in nature.   Click here for Museum Info


Signup will occur via a Google form (see below or the forms page.)

Entry plan:   Entries are limited.  See entry/forms page for details.  Entry confirmation will be required in April.

Aid drop / aid station assignments will be  determined in April.  

To enter go the entry/forms page: (Click here)