Running races in or near Waltham, MA
Marathons, 1-milers, 5Ks, half-marathons, 10Ks & more
See below for a frequently-updated, comprehensive list of upcoming running events in the local Waltham, MA area. Races listed here include both walking and running events of various distances — from 1-milers, to 5Ks, to marathons, and everything else in between.
Running-5K - Individual Age group/open
Organization: The Next Loop Endurance Series
Date of Race: 04-11-2026
Description: What Is The Next Loop? TheNext Loop Endurance Seriesis a loop-based ...
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Running-50K - Individual Age group/open
Organization: The Next Loop Endurance Series
Date of Race: 04-11-2026
Description: What Is The Next Loop? TheNext Loop Endurance Seriesis a loop-based ...
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Running-15K - Individual Age group/open
Organization: The Next Loop Endurance Series
Date of Race: 04-11-2026
Description: What Is The Next Loop? TheNext Loop Endurance Seriesis a loop-based ...
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Running-Marathon - Individual Age group/open
Organization: The Next Loop Endurance Series
Date of Race: 04-11-2026
Description: What Is The Next Loop? TheNext Loop Endurance Seriesis a loop-based ...
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Running-10K - Individual Age group/open
Organization: The Next Loop Endurance Series
Date of Race: 04-11-2026
Description: What Is The Next Loop? TheNext Loop Endurance Seriesis a loop-based ...
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Running-5K - 19 Years Old and Under
Organization: Tri-Valley Front Runners
Date of Race: 05-31-2026
Description: 2026 Westborough Rotary’s5KRun and ...
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Running-Half marathon - Individual Age group/open
Organization: Three Beach Minimum
Date of Race: 09-26-2026
Description: The 3 Beach Minimum Half Marathon is a spectacularrun that starts ...
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Running-5K - 20 Years Old and Above
Organization: Tri-Valley Front Runners
Date of Race: 05-31-2026
Description: 2026 Westborough Rotary’s5KRun and ...
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Running-Half marathon - Individual Age group/open
Organization: The Next Loop Endurance Series
Date of Race: 04-11-2026
Description: What Is The Next Loop? TheNext Loop Endurance Seriesis a loop-based ...
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16th Annual Hopedale Blue Raider 5K Run
Organization: Tri-Valley Front Runners
Date of Race: 05-09-2026
Description: Course Details: Consists of long ...
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The Next Loop Endurance Series - New England
Organization: The Next Loop Endurance Series
Date of Race: 04-11-2026
Description: What Is The Next Loop? TheNext Loop Endurance Seriesis a loop-based ...
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Running-Kid's Dash - 1 Kid (Age 12 and ...
Organization: Tri-Valley Front Runners
Date of Race: 05-31-2026
Description: 2026 Westborough Rotary’s5KRun and ...
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South Shore *3 Beach Minimum' Half Marathon 2026
Organization: Three Beach Minimum
Date of Race: 09-26-2026
Description: The 3 Beach Minimum Half Marathon is a spectacularrun that starts ...
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Rotary Club of Westborough 5K
Organization: Tri-Valley Front Runners
Date of Race: 05-31-2026
Description: 2026 Westborough Rotary’s5KRun and ...
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Running-5K - 20 Yrs Old and Above plus ...
Organization: Tri-Valley Front Runners
Date of Race: 05-31-2026
Description: 2026 Westborough Rotary’s5KRun and ...
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Running-5K - 20 Yrs Old and Above plus ...
Organization: Tri-Valley Front Runners
Date of Race: 05-31-2026
Description: 2026 Westborough Rotary’s5KRun and ...
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Running-5K (22 years old and above) - Individual ...
Organization: Tri-Valley Front Runners
Date of Race: 05-09-2026
Description: Course Details: Consists of long ...
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Running-5K (21 years old and under) - 21 ...
Organization: Tri-Valley Front Runners
Date of Race: 05-09-2026
Description: Course Details: Consists of long ...
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Running-Kid's Dash - 2 or more Kids (Age ...
Organization: Tri-Valley Front Runners
Date of Race: 05-31-2026
Description: 2026 Westborough Rotary’s5KRun and ...
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Price
Organization: Weymouth Youth Track Club
Date of Race: 06-23-2026
Description: 2026 Westborough Rotary’s5KRun and ...
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WYTC Summer 2026 Youth
Organization: Weymouth Youth Track Club
Date of Race: 06-23-2026
Description: *T-Shirts not guaranteed if registered after 6/19/26* Program caps at 245 ...
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Baseball Clinic
Organization: Coach Mike's Mobile Sports
Date of Race: 05-05-2026
Description: Coach Mike will be coaching a Baseball clinic at Everwood Camp ...
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BSS Spring 2026 After School Program
Organization: Coach Mike's Mobile Sports
Date of Race: 04-30-2026
Description: Coach Mike will be running an after school sports program at ...
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OPR School After School Program
Organization: Coach Mike's Mobile Sports
Date of Race: 04-13-2026
Description: Coach Mike will be running an after school sports program at ...
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Baseball Clinic
Organization: Coach Mike's Mobile Sports
Date of Race: 05-22-2026
Description: Coach Mike will be coaching a Baseball clinic at Teamworks in ...
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Complete list of running events in and near Waltham, MA: Marathons, 1-milers, 5Ks, half-marathons, 10Ks, obstacle courses, walking events & more.
More information about Waltham
About Waltham
Waltham (MA) is a city in Middlesex County with an estimated population of 60,632.[4]
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In 2015, the 5K maintained the #1 position of all race distances with 7.6 million finishers (U.S.).
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