USA Clydesdale & Filly Racing Federation ^popular!
(72 votes)
National & international Clydesdale & Filly organization. Dedicated to competitive divisions for those who have made the weight.
Add your rating (1=worst, 10=best): --- 1 2 3 4 5 6 7 8 9 10

USATF - New England Association ^popular!
(38 votes)

Add your rating (1=worst, 10=best): --- 1 2 3 4 5 6 7 8 9 10

Active Life and Running Club
(40 votes)
With over 1000 members with marathons under their respective belts, the Active Life and Running Club stakes a claim as the largest pure marathon running club in America.
Add your rating (1=worst, 10=best): --- 1 2 3 4 5 6 7 8 9 10

Fifty States Half Marathon Club
(2 votes)
A club for runners and triathletes that want to challenge themselves and be awarded for accomplishing an endurance event of half marathon (or half Ironman) or longer in all 50 states by taking on the 50 State Endurance Challenge or a 100 Half Anywhere Challenge (in any state)!
Add your rating (1=worst, 10=best): --- 1 2 3 4 5 6 7 8 9 10

Half2run.com
(1 votes)
The Club that runs half the marathon in half the states.
Add your rating (1=worst, 10=best): --- 1 2 3 4 5 6 7 8 9 10

Marathon Tours & Travel
Unrated.
Information regarding entry and travel to marathons and half marathons on all seven continents.
Add your rating (1=worst, 10=best): --- 1 2 3 4 5 6 7 8 9 10

Pilates Institute of America
Unrated.
The Pilates Institute of America is a full service Pilates organization offering everything from cost-effective and time efficient quality Pilates teacher training to Pilates studio design, equipment training, equipment purchasing and continuing education.
Add your rating (1=worst, 10=best): --- 1 2 3 4 5 6 7 8 9 10

Pulmonary Pacers
Unrated.
Pulmonary Pacers is the Pulmonary Fibrosis Foundation new signature RUN TEAM that will attract athletes of all levels turn their enthusiasm for running into finding a cure! With the Pulmonary Pacers, athletes are able to make their miles more meaningful by dedicating their ability and strength to those that are living with pulmonary fibrosis or for their loved ones that they lost. It is a tremendous step in finding a cure and promoting awareness on this under diagnosed and terminal disease.
Add your rating (1=worst, 10=best): --- 1 2 3 4 5 6 7 8 9 10

RRCA.org
(6 votes)
Can’t find a running club in your area? Contact the RRCA about developing a running club.
Add your rating (1=worst, 10=best): --- 1 2 3 4 5 6 7 8 9 10

seeMOMMYrun
(6 votes)
Find or start a free running or walking group convenient to your schedule, location, and fitness level while making new friends for you and your child.
Add your rating (1=worst, 10=best): --- 1 2 3 4 5 6 7 8 9 10

Team ACS
(18 votes)
Turn your local race into a lifesaving endeavor! Team ACS is an American Cancer Society online fundraising tool that allows people to turn 5K runs, bike races, marathons, and other events into opportunities to support the lifesaving research, education, advocacy, and patient service programs of the American Cancer Society. Once you’ve registered for your local event, visit the website and get started today, because fighting cancer takes teamwork!
Add your rating (1=worst, 10=best): --- 1 2 3 4 5 6 7 8 9 10

Team in Training
(33 votes)
Run by the Leukemia Society of America, the Team in Training program helps runners train and complete a marathon as they help raise funds for Leukemia research. The site gives you the whole lowdown.
Add your rating (1=worst, 10=best): --- 1 2 3 4 5 6 7 8 9 10

USA Track & Field
(15 votes)
A truly substantial site, particularly useful for avid track and running fans who can't get enough stats. Site includes USATF news, athlete bios, upcoming events, and more.
Add your rating (1=worst, 10=best): --- 1 2 3 4 5 6 7 8 9 10

USATF - Pacific Association
(5 votes)

Add your rating (1=worst, 10=best): --- 1 2 3 4 5 6 7 8 9 10