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What To Look For
Triathletes have very specific needs in a heart rate monitor (HRM) because of the three different sports they are training for: swimming, running and cycling. Therefore, one needs an HRM that has features for both running and cycling, and is waterproof so it can be taken into the pool. Suunto and Timex both make HRMs that are tailored to triathlon training, but it is also a good idea to find a waterproof cycling HRM that has the features that would allow it to double as a running HRM. An HRM for triathletes should definitely come with a chest strap transmitter.
Common Pitfalls
Some experts suggest that triathletes should separate their cycling and running-swimming computing, because the flood of data is too complicated to follow while actually pedaling on the road. However, companies like Polar build cycling HRMs with accessory options, and most of their owners think they are easy to use and the data is easy to track. You may find it necessary to get two separate devices---one for cycling and one for running and swimming---but don't take that very expensive step until you need to.
Where To Buy
Given that a triathlete is going to make a lot of specific demands on their HRM, it is best to buy such an HRM online. The sum of features required are very specific and often found only on high-end HRMs, so at a minimum going to a brick-and-mortar sporting goods store to get the device means calling ahead just to check if it is there. Also, you won't really know if the fit is comfortable until you are out using it, so trying it on is almost pointless. Combining these considerations with the advantages of bargain-hunting on the Internet means it is much better to shop online.
Cost
Timex Ironman HRMs are cheap and in 2009 range between $50 and $200 online. Suunto's product line comes with more features and accessories, and thus ranges between $450 and $700. Polar's cycling HRMs that can be bent to multi-purpose use start at about $400, but with a package of accessories can balloon up to $700.
Article Written By Edwin Thomas
Edwin Thomas has been writing since 1997. His work has appeared in various online publications, including The Black Table, Proboxing-Fans and others. A travel blogger, editor and writer, Thomas has traveled from Argentina to Vietnam in pursuit of stories. He holds a Master of Arts in international affairs from American University.