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  • Distance: 3.6 km from Sudbury
    Sun, Sep 27, 2026 at 9:00 AM

    Race for the Refuge

    The Highland City Striders welcome you to explore the trails at the Assabet River National Wildlife Refuge in Sudbury, MA! The Race for the Refuge begins at the ARNWR Visitor’s Center and traverses the beautiful trails around the Refuge. The course will lead runners into this idyllic nature refuge, past ponds, through pine and oak forests, and alongside mysterious military bunkers.

    Course Description

    The double track trails are hard-packed earth and gravel. It’s a great course for beginner trail runners. For the advanced trail runner, it could be an opportunity for a new PR!

    Events

    The lineup features a 10K (1 loop) and 30K (3 loops) races, and a 6-hour timed event.

    For the timed courses, runners may do as many loops as desired. A loop must be completed by 3pm to be counted towards final mileage. Ranking of runners is determined by the runner who completes the most loops in the shortest period of time. Runners in the 6-hour race must start their last lap by 2pm.

    The top male, female, and nonbinary runner from each of the events (10k, 30k, 3-hour, and 6-hour) will receive a prize. The largest team will also be celebrated, so please encourage friends and fellow club members to join you!

    Race Day Rules

    Dogs are not permitted on Refuge lands, so please leave your pooch at home. This event is family-friendly but children must be supervised.

    Tread lightly through the refuge and please leave no trace! This will be a cupless race to eliminate waste on the course. Any fuel, such as gel packets, should be carried in and packed out. Due to the delicate ecosystem any littering is grounds for immediate disqualification. All runners must stay on the marked course.

    Thanks for keeping our wild spaces wild!

    Aid Stations and Course Marking

    There will be two aid stations with typical trail race fare including water, hydration, hydration mix, pretzels, orange slices, banana halves, Swedish fish, coke, and ginger ale. The main aid station will be at the Start/Finish line. A second aid station at Taylor Road is about halfway through the loop. Note this is a cupless race.

    All runners will receive swab with registration and prizes will be awarded to top winners in each category.

    The course will be well marked for the runners with two course marshals at key turns.

    Pacers

    Pacers are allowed to assist runners in the 6-hour race only. They may start at noon or later and must complete an online or paper registration form. Upon arrival at the race, the pacer will check in at the race director table and receive a pacer bib. One pacer at a time per runner and no muling is allowed. Pacers can use the aid stations at no cost and there is no registration fee to pace a runner.

    Cancelation and Refunds

    There are no deferrals and no refunds. Your entry fee will be considered a charitable donation and used for nature education and trail improvements. Thank you for your support.

    We are looking forward to seeing you at the race, but if you are unable to join us, please cancel using RunSignUp or contact the race directors via email so that we can give someone from the waitlist the opportunity to run. Thank you!

    About the Refuge

    Centuries ago, these lands were hunted and fished by Nipmuc Tribes. Later, they were farmed by colonists, intersected by a railroad, and used for military training. You will run past military bunkers that were in use when the area was known as the Sudbury Training Annex, which was part of Fort Devens. The US Army transferred the land to the US Fish and Wildlife Service in 2000, establishing the Refuge.

    Since then, the Refuge has become home to freshwater wetlands, oak and pine forest, and shrubland that support many types of wildlife, including wading birds, songbirds, raptors, beaver, bobcat, white-tailed deer, and various reptiles and amphibians.

    Proceeds from this race will help fund improvements to three refuge sites in MA and a volunteer coordinator who will assist visitors to the refuge with nature education and programming.

    Post-Race Festivities

    Details to come.

    Presented by the Highland City Striders

    We are runners in Hudson, Marlborough, and surrounding communities. Founded in 2002, our members meet several times weekly to run various distances for fun and to keep in shape! We run, recover, have fun, and laugh together. The Highland City Striders is a non-profit 501(C)3. All race profits will go to local charities.

    We are also working closely with Friends of Woodlands and Waters, a non-profit working in partnership with the U.S. Fish and Wildlife Service to support our refuges. Check out their site to learn more and get involved!

    See full details
    10k30kGravelRunTrail via RunSignup
  • Distance: 3.8 km from Sudbury
    Sat, Oct 03, 2026 at 8:00 AM

    The Marlborough Community Foundation Race: Back and Better than Ever!

    The Marlborough Community Foundation Race, created over 30 years ago, was designed to bring together the community in celebration of health, spirit, and giving back. What started as a small local event has grown into an annual tradition, attracting over 250 runners and raising funds for scholarships that support local students' higher education.

    After a brief hiatus, the race is back—this time partnering with the Wayside Inn Foundation to revitalize the event. The collaboration brings new energy and a broader focus on community, with employees from local businesses joining in and strengthening community ties. Whether running, walking, or participating in a corporate challenge, everyone can contribute to a great cause.

    Proceeds will benefit the economic development of the foundations service areas. The revitalized race celebrates fitness, community, and education, while supporting both the foundation’s mission and the Wayside Inn’s legacy.

    Join us this year to make a difference, celebrate local pride, and help ensure the race continues to impact future generations. It’s going to be the best one yet!

    THE FIRST 100 PEOPLE TO SIGN UP ARE GUARANTEED A SHIRT!! SIGN UP TODAY!!

    See full details
    5kRunWalk via RaceRoster
  • Distance: 9.3 km from Sudbury
    Sat, Oct 03, 2026 at 9:30 AM

    HOUSE RABBIT NETWORK 5000

    100% OF RACE PROCEEDS WILL GO TO HRN TO SUPPORT THE BUNS!

    This day is all about raising funds and awareness for the House Rabbit Network

    The House Rabbit Network is a 501c3 organization in the greater Boston area formed in 2000 with two primary purposes: to rescue homeless rabbits and find them good indoor homes, and to educate the public about rabbits and their care. These activities may include:

    • ​Providing foster care for discarded domestic rabbits and arranging for adoption to permanent, indoor homes

    • Assisting humane societies and shelters with rabbits

    • Providing spay/neuter surgery and veterinary care through arrangements with area practitioners

    • Rehabilitating and socializing mistreated or neglected rabbits

    • Permanently caring for animals who cannot be placed in adoptive homes due to serious health or behavioral problems

    • Educating the public on responsible pet ownership and humane practices

    PRE AND POST RACE FESTIVITIES HOSTED BY CRAFT FOOD HALLS!

    ONE FREE DRINK SPONSORED BY WACHUSETT BREWING INCLUDED IN EACH 5K ENTRY!

    A GREAT VENUE FOR THE ENTIRE FAMILY TO ENJOY A BEAUTIFUL FALL SATURDAY!

    We LOVE all animals and well-mannered dogs (on leash at all times) are welcomed to participate in the race, but they must start in the back behind the runners. The same goes for those running/walking with baby strollers as well. Craft Food Hall also allows dogs to be on premise, but ONLY in the patio seating area.

    SATURDAY, OCTOBER 3RD, 2026 - 9:30AM

    Craft Food Hall BXB 500 Beaver Brook Rd, Boxboro, MA 01719

    *Ample Parking Available At Craft Food Hall Parking Areas HERE

    HONORARY GUEST: ????!

    ONLINE REGISTRATION TIMELINE:

    Early Registration Discount Period Opens - April 20th to July 31st ($25)

    In-Person 5K 1st Price Increase - Aug 1st to Aug 31st ($30)

    In-Person 5K 2nd Price Increase - Sept 1st to Oct 2nd ($35)

    In-Person 5K Price Increase on Race Day - October 3rd ($40)

    EARLY PACKET-PICKUP:

    Friday October 2nd from 5PM to 7PM

    MARATHON SPORTS WESTFORD

    OCTOBER 3RD EVENT SCHEDULE:

    Parking & 5K Check-in Opens - 8:15AM

    5K Registration Closes - 9:20AM

    5K Run/Walk Starts - 9:30AM

    Family Fun Run Starts - 10:30AM

    CALL FOR VOLUNTEERS!

    If you can't run, walk. If you can't walk, volunteer!

    HRN wouldn't be able to function without the generous volunteers who give their time and effort every day. The same is true for this race. If you would like to volunteer, and also receive a free, spiffy HRN 5K giveaway, then use the VOLUNTEER link at the top or here.

    CALL FOR SPONSORS!

    As a non-profit race we rely on our generous sponsors to help offset the expenses of putting on the event. See the impressive, and growing, list above! The more sponsors we have, the more race proceeds that will go directly to assisting the buns! If you or a business you know would like to sponsor or donate their services to this event, then please reach out to us immediately!

    ALL EVENTS PROFESSIONALLY CHIP-TIMED BY NEW ENGLAND TIMING

    • Live tracking and finish results on-site and posted HERE

    • Live mile-by-mile splits will be provided at each mile of the 5K

    • Instant email notification of your results upon finishing

    TIMED EVENTS:

    • 5K Run or Walk

    5K SCORING BRACKETS & PRIZE STRUCTURE:

    • TOP 3 MALE/FEMALE

    • Scoring Age Groups (TOP 1 M/F)

    • 17&U

    • 18-29

    • 30-39

    • 40-49

    • 50-59

    • 60-69

    • 70+

    COURSE RECORDS:

    MALE - GABE MILLER - 2024 - 16:25

    FEMALE - LINDSAY WILLARD - 2024 - 21:41

    5K TEAM COMPETITION:

    Running is always more fun with friends and family! Don't forget to CREATE or JOIN a team if you want to take part in the team competition! We'll have a nice surprise for the largest AND fastest teams!

    See full details
    1k5kFun RunIndoorRunWalk via RunSignup
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