Whately, Massachusetts · Sunday, May 10, 2026
The Western Mass Mothers Day Half Marathon is a 9 miles, half marathon, and running event held on Sunday, May 10, 2026. It is located at 189 Chestnut Plain Road in Whately, Massachusetts.
The Greenfield Triathlon is the longest running triathlon in New England!
Situated in the heart of Franklin County, the Greenfield Triathlon course meanders through the picturesque back roads of Greenfield, passes through the Historic Eunice Williams Covered Bridge, and features swimming in our very own Green River.
Offering both International and Sprint distances for individual athletes as well as two- and three-person teams, the Greenfield Triathlon is great for both beginners and seasoned triathletes. A triathlon training program is offered Sundays leading up to the event. In Greenfield, our motto is “To Finish Is To Win!”
All race proceeds benefit the Greenfield Recreation Department. The Greenfield Triathlon has raised thousands of dollars to support programs and events for families within our community. We thank you for your continued support.
THE 2026 MARATHON IS FULL. THERE IS NO WAITLIST AND NO BIB TRANSFERS.
The New England Green River Marathon is one of the most beautiful races in New England. Starting in Marlboro, Vermont and following the course of the Green River through an 1870’s covered bridge, and ending with a finish-line celebration in the shade of maple trees at Greenfield Community College in Massachusetts. This USATF-certified (Certification MA18003JK) course has a net 1,400 foot drop over a rolling, downhill course that has seen many personal best and Boston qualifying times for well-trained runners. Choose below from either the regular entry, OR if you want to support the Connecticut River Conservancy by raising an additional $250, join the Stream Team! This funding will go directly to the CRC for their efforts to restore and advocate for clean water, healthy habitats, and resilient communities to support a diverse and thriving watershed.
Tree House Brewing Company
Half Marathon
Join Tree House Brewing Company for our Fourth Annual Half Marathon on September 13, 2026.
Immerse yourself in scenic Western Massachusetts for a course that winds through historic Deerfield alongside the Connecticut River and Mount Sugarloaf before returning to the Brewery where an unforgettable celebration awaits!
Please note that because of limited occupancy and safety requirements, access to the post-race event party will be limited to runners and ticket-holding spectators (regardless of age).
Don't miss your chance to be part of an incredible day of competition, community, music, swag and more!
There will be No Race Day Bib Pick Up
The bib transfer deadline is 11:59pm 7/31/2026
The Summit Run 5K is renowned as one of the most challenging, beautiful, and enjoyable 5Ks in the Pioneer Valley!
Sunday, September 20, 2026 at 9:30
Finish your 5K with a view that will take your breath away.
Celebrate over four decades of community, fitness, and breathtaking views with the Summit Run 5K.
This iconic race welcomes both runners and walkers to a memorable experience, finishing with panoramic views from the summit of Mt. Holyoke, high above the Connecticut River and the Pioneer Valley.
Open to All Participants
The Summit Run 5K welcomes runners and walkers of all levels. As part of the SMAC Race Series and endorsed by the New England 65 Plus Runners Club, this event promises a supportive and exhilarating atmosphere.
Discounts
Register early before August 31st and save $5.00 and get a Tech T-Shirt
Senior runners 65 years and older save $5.00
SMAC Members - save 10% when registering before race day
Race Roster adds credit card processing fees.
Course Description
Mile 1: Begin with a short .4 mile uphill "warm-up" on Mountain Rd toward the gate of Skinner State Park where you turn right onto Old Mountain Rd. and enjoy a fast .6 mile gentle downhill through Hockanum Villageto the turn-around at mile 1.
Mile 2: As you turn-around wave to your fellow runners as you head back up Old Mountain Road passing featuring historic homes and picturesque scenery. Pass through Skinner State Park gate and begin the climb to the water stop at mile 2.
Final Stretch: Time to dig-in and tackle the final mile with a challenging climb of 800 feet on a paved road, leading you to the summit finish line atop Mt. Holyoke.
Check out the course map!
Information
A donation from race proceeds will support Kestrel Land Trust
Custom Tech T-Shirts if registered by August 31st. Some extra shirts may be available if registering after 8/31/2026.
Water stop at the halfway point.
Refreshments will be available at the finish area.
Free Race Photos!
Timing will be provided by Rat Race Timing, with instant results available upon finishing.
After the race, runners will walk down to the parking area by the starting point.
Past Results - https://sugarloafmountainathletic.org/Results/summit-run-5k/
AwardsAtkins Apple Pies!
Awards will be presented at the Summit’s finish line after the race.
Cash Prize for 1st place overall male and female.
Awards will be given to all age group winners (male and female).
Atkins Apple Pies for Age Group Winners and Overall Winners.
Age Group Divisions:
Under 9
10-14
15-19
20-29
30-39
40-49
50-59
60-64*
65-69*
70-74*
75-79*
80-84+*
Join us for a race that combines physical challenge with natural beauty, making it an unforgettable experience for all.
The Summit House on Mount Holyoke - Finish Line
SAVE with Early Bird Pre-Registration by August 31st - $35
Registration September 1 - September 19th - $40
Day of Race Registration - $45
Race Roster will add a processing fee to your registration
The Happy Valley Half Marathon was created to bring you a breath-taking course, designed to showcase some of the most beautiful roads that New England has to offer, during peak Fall foliage. The Happy Valley experience only gets started at the finish line. Your achievement will be celebrated with breweries, food trucks and the enthusiastic support of the local running community.