- 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.
- 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.
- 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.
- Swim-Bike-Run, Inc. - A Florida-based event organizer, producer, seminar leader and race timing services provider for multi-sport events.
- Women's Multisport Online - A magazine for women's multisport worldwide.