The Mass Half
The Mass Half is a running race on March 21, 2027 in Worcester, MA, with an entry fee of $85.
- Date
- March 21, 2027 (234 days to go)
- Location
- 100 Madison St, Worcester, MA
- Price
- $85
- Sport
- Running
From the Organizer
CENTRAL MASS IS READY FOR A RACE OF ITS OWN
For the first time in more than a decade, runners will once again have the chance to race a half marathon in Worcester. Set in the spring and timed with the Boston Marathon season, The Mass Half offers a unique opportunity to train, race, and celebrate in the Heart of the Commonwealth, whether you’re pursuing a personal best, preparing for Boston, or simply looking for a great reason to run.
But the experience extends well beyond the course. With thousands of runners expected to take part, The Mass Half will bring new energy to Worcester and Central Massachusetts, creating opportunities for local businesses, nonprofits, corporations, volunteers, and community partners to be part of one of the region’s biggest new annual events.
As United Way of Central Massachusetts’ signature annual fundraiser, powered by M&T Bank, The Mass Half also puts purpose behind every mile. Proceeds will support UWCM and nonprofit organizations across the region, helping advance the work that makes Central Massachusetts a stronger, healthier, and more resilient place to live.
The Mass Half is a race for the region; and an invitation for everyone to be part of what comes next.
Events
Weather
Typical Conditions
It's too far out for a forecast, so here's what weather on this date is normally like in the area. A race day forecast will replace this as race week approaches.
Typical High
44°
Typical Low
27°
Chance of Rain
40%
Based on US Climate Normals data from Worcester Rgnl Ap, 4 mi from the venue.
Host City
About Worcester, MA
Population
205,501
as of 2023
City Elevation
589 ft
Nearest Airport
ORH
Worcester Regional Airport · 3 mi
Major Hub
BOS
Boston Logan International Airport · 42 mi
Time Zone
Eastern Time
From Endurance Grid
A mid-size host city. Enough lodging and amenities to keep race weekend easy, without big-city sprawl.
Race Location
Your Next Start Line
What Are You
Waiting For?
Every finish line starts with a single decision. Claim your spot at The Mass Half, put it on the calendar, and turn “someday” into a start date.
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From Endurance Grid
About This Sport
Endurance Grid is here to help you understand the sport, decide if it’s the right fit, and learn how to prepare. For course distances, logistics, and race-day specifics, always defer to the race organizer’s event page.
With running, there's a distance for every fitness level, a community at every start line, and nothing beats the feeling of crossing a finish line you trained for.
Running is an endurance sport that rewards consistency, and showing up every week compounds in ways that will surprise you.
Running
From 5K to marathon, running races are an accessible entry point into endurance sport. There's a distance for every fitness level and a community at every start line.
Coming Up
More Running races near Worcester, MA
2026 Kennedy Community Health 5K Walk & Run
5K · From $10 · 64 Franklin Street
Less than a mile away
Greg’s birthday 5k
5K · 34 green st
Less than a mile away
2026 Shrewsbury Trails 5K
5K · From $12 · 430 Lake St.
4 miles away
Veterans Inc. Run4Veterans 5k Run/Walk at Polar Park
5K · From $25 · 100 Madison St.
Less than a mile away
Explore by category
Plan your trip
Make it a Racecation
Coming from out of town? There's more to Worcester than race day. We'll help you line up nearby lodging, flights, a rental car, and things to do so you can make the most of your racecation.
Plan your trip to WorcesterFrequently Asked Questions (FAQs)
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The Mass Half
Mar 21, 2027