• The transition area is located at Glastonbury High School.
  • The start is in front of the school on Hubbard Street, Glastonbury, CT.
  • The finish is located a short walk away at the Hubbard Green.

Both runs follow similar courses, flat, double loop in neighborhoods surrounding the Hubbard Green. You will run on well paved, wide roads in an area that doesn’t see much traffic on an early Sunday morning. The first run measures 3.1 miles, the second 3.3 miles.

Bike course is a 26k loop of rolling hills through the apple orchard country of Glastonbury. Long straight-aways, a couple of steady climbs, and a few quick turns makes this early season course a good test of endurance. Seasoned athletes will find the course fast and exhilarating while beginners will enjoy the challenge of the ride yet be very comfortable with the wide shoulders and manageable distance.

Event Records:
Male: 1:14:46 – set by Eneas Freyre in 2013
Female: 1:32:49 – set by Rebecca Stephenson in 2012


The race will be officiated by USA Triathlon. All rules will be enforced. NOTE, bar ends must be plugged (plugs are readily available at bike shops). Any bike without bar ends plugged will not be allowed to race. It is the participant’s responsibility to know the rules for an event sanctioned by USA Triathlon. More…


Click here for a list of frequently asked questions about the Shamrock Duathlon.


The Shamrock Duathlon can be entered as a relay team of 2 or 3 members; each completing 1-2 of the event legs. B Tag bib will be attached to race belt. Race belt is passed between team members in transition. A $10 deposit is required at packet pickup for race belt rental.


This event is timed by Bay State Race Services and uses the B-Tag timing system (timing chip is attached to the back of the race bib). Please wear the race bib on the front of the shirt. 5 splits and finish time recorded.


  • Top 3 overall male/female
  • Male Age Group – 14-19 and 5-year age groups from 20-80+
  • Female Age Group – 14-19 and 5-year age groups from 20-80+
  • Clydesdale (men 220 lbs +)
  • Athena (women 165 lbs +)
  • Top teams (Male, Female, Mixed)


  • Top 3 overall male/female
  • Top 3 in each male/female age division

No “double dipping”


Course limit is 3 hours for the Shamrock Duathlon. Run 1 time limit is 50 minutes. The first run and bike legs need to be completed in 2 hours and 5 minutes from the start of the race. More…


  • Fluids at start/finish, transition and run courses. No fluids offered on bike course.
  • Portalets at race start/finish
  • Motorcycle and medical support