TARC Don't Run Boston

Course

Loops of the Blue Hills Reservation in Milton, Massachusetts, starting and finishing at Houghton's Pond. The 50K and 50-mile courses run on twisty, rocky singletrack and are left unmarked, so runners navigate for themselves from maps. Entry is free, with donations invited to the Blue Hills Trailside Museum.

Key dates

• ·
  Registration
  Not open yet
• ★
  Race day
  Sun 18 Apr 2027

About

This 50K and 50-mile ultra starts and finishes at Houghton's Pond in the Blue Hills Reservation, covering rocky, root-strewn, largely unmarked singletrack. Organized by the Trail Animals Running Club since the 1990s, it is among the earliest true trail ultras in Massachusetts.

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  Boston Marathon

  Mon 19 Apr 2027 · Boston, MA · Marathon

  Oldest annual marathon, past Heartbreak Hill at mile 20

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• 

  James Joyce Ramble

  April 2027 · Dedham, MA · 10K

  Costumed actors recite Joyce's works along the course

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• 

  TARC Spring Classic

  Sat 24 Apr 2027 · Weston, MA · 50K · Marathon · Half Marathon · 10K
  Save
• 

  Cape Cod Trail Race

  May 2027 · Falmouth, MA · 30K · 20K · 10K

  100% trail 10K loop run up to three times

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A confirmed date shows its day; a provisional one shows only its month, because we won't claim a day we don't have. This page is rebuilt every night from the RunCalendar catalogue.