Found 138 races near Merrimack County, NH

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OCT
10

New Ipswich, NH
• 41.0 miles
An endurance challenge that traverses the Commonwealth of Massachusetts following the Appalachian Midstate Trail during the peak of Autumn. The idea the for Midstate Massive Ultra Trail (MMUT)...
23
OCT
10

Warner, NH
• 47.7 miles
$25 -$40
Please join us for the Warner Fall Foliage Festival, 5K! This 5K run/walk takes place on the beautiful roads of Warner, NH and is held each year as part of the Warner Fall Foliage Festival...
5K
14
OCT
11

New Castle, NH
• 23.9 miles
$10 -$40
Our 5K is held on one of the most beautiful courses in New England.  It starts and finishes at the Great Island Common at the mouth of the Piscataqua River.  The course runs through the scenic...
5K
25
OCT
17

Manchester, NH
• 41.2 miles
$5 -$60
The Howl-O-Ween 5k Run/Walk is a dog-friendly, run/walk that benefits the Animal Rescue League of NH. This is a great opportunity to get out and be active with the whole family including your...
5K
29
OCT
18

Springvale, ME
• 46.0 miles
$20 -$25
CELEBRATING 28 YEARS OF CONNECTING KIDS!!!Race Day:Bib pickup 8:00-9:30 amKids Fun Run 9:30Robot Race 9:45 (Children can race virtually via robot if they cannot attend in person.)Race Start Time...
5K
39
OCT
18

West Newbury, MA
• 20.3 miles
$25 -$45
Join the Fun at the 37th Annual Apple Harvest Run! 🍎🏃‍♀️🍂 Get ready for one of the most beloved fall traditions in the region! The Apple Harvest Run returns to the scenic town of West Newbury,...
1m 5K 5m
85
OCT
18

Lowell, MA
• 24.3 miles
$105 -$150
Consistently one of the top marathons for entry to the Boston Marathon - the Baystate Marathon is designed to give you your best chance to run a Boston Qualifying Time. Not ready for a marathon,...
Half Marathon Marathon
37
OCT
18

Topsfield, MA
• 60.2 miles
$25 -$35
The annual Topsfield Fall Foliage Classic Road Race offers a 5 Miler and 5K that loop through beautiful Topsfield, MA. Each has one hilly section at the beginning but course is mostly flat. The...
5K 5m
3
OCT
23

Nashua, NH
• 41.0 miles
$35
Please join us in memory of Brandi Connor and a celebration of her beautiful life. Together we run to remember her in the fight against cancer.
5K
7
OCT
24

Stratham, NH
• 44.9 miles
$30 -$40
REGISTRATION IS NOW OPEN!! Race Date: October 24, 2026 The Great Bay 5K is excited to hold its 28th annual race in 2026!  The GB5K is the final race in the popular Seacoast Road Race Series and...
5K
6
OCT
25

Keene, NH
• 36.1 miles
$35 -$40
                                                     Sunday 25 October at 9am Yo-Yo-Yo!!   This is a race for all of you Yo-Yo's out there! Why Yo-Yo? Because that's exactly what you're going to...
15
OCT
25

Portsmouth, NH
• 49.9 miles
$89 -$99
The Seacoast Half Marathon is one of the longest-running half marathons in coastal New Hampshire. Join us for our 20th annual race on Sunday, October 26. This year's beneficiary is an amazing...
Half Marathon
70
OCT
31

Londonderry, NH
• 34.2 miles
$45
A 5K/Walk to support Live Free Animal Rescue's mission to rescuing abandoned, neglected and traumatized dogs from southern states and our focus is high-risk dogs and puppies. Local owner...
5K
2
NOV
1

Ipswich, MA
• 17.0 miles
$29 -$109
Come enjoy beautiful ocean views as you run along the scenic coastline of Great Neck! On the course you'll race past some of the oldest and most historical homes (pre-revolution) in the entire...
5K Half Marathon
68
NOV
7

Keene, NH
• 48.3 miles
$16 -$45
Join us on Saturday, November 7th as the 12th Annual Monadnock Developmental Services Run~Walk~Smile once again joins forces with the Flutie 5K for Autism in Keene, NH! Come out and run, walk,...
1m 5K 10K
6
NOV
7

Amesbury, MA
• 40.3 miles
$20 -$50
This unique Farm 5K race series in 2026 will feature three exhilarating races, all set within the scenic grounds of our beautiful farm in Amesbury, MA. The varying seasons here in New England...
5K
10
NOV
7

Lincoln, NH
• 49.6 miles
$35 -$40
7th Annual Rescue Me 5K Run/Walk in Lincoln, New Hampshire, benefitting Lakes Region Search and Rescue (“LRSAR”).  LRSAR is a non-profit, all-volunteer organization formed in 2019 to assist New...
5K
9
NOV
8

Newburyport, MA
• 37.0 miles
$44 -$129
Anchors away, New England! The 12th Annual Harborside Half Marathon & 5K returns to Newburyport, MA on November 8, 2026 for another race past iconic New England waterscapes. Join thousands of...
5K Half Marathon
46
NOV
14

Hampton Falls, NH
• 38.4 miles
$25 -$45
The LAS PTO is proud to host this annual event and we hope you will join us yet again in 2026! Enjoy a kids 1 mile fun run or 5k run through picturesque Hampton Falls, NH - all while raising...
5K
25
NOV
14

Concord, NH
• 51.7 miles
$35
Lace up your sneakers and grab your favorite two or four legged running partner for the annual Dirty Paws 5k! Course begins at the Banks Humane Education Center at 95 Silk Farm Rd, Concord...
5K
6