Fiske Independent Race Management
- FIRM is a multi-sport events organizer acting in the Northeast USA. Provides events, application forms, results, discussion board, and links.
- http://firm-racing.com/

Multisports Promotions Ltd and MSPro Training
- Event organisers of triathlons, duathlons, running, cycling, swimming, adventure racing, training camps, and its triathlon academy. MSPro training links athletic training with business and corporate training.
- http://www.mspro.co.uk/

MultiSportsCanada.com
- Sponsors of a series of multisport events held throughout Canada with various awards and prizes. Site provides general information, points system, events listing.
- http://www.multisportscanada.com/

Maui Multi Sports Club
- Maui non-profit organization sponsors multi sports activities in Hawaii. Running, biking, swimming, canoe, kayak, surfing, and duathlons. Events include the Kings Trail Triathlon.
- http://www.mauimultisportsclub.org/