For access to all of our training, gear, and race coverage, plus exclusive training plans, FinisherPix photos, event discounts, and GPS apps, sign up for Outside+.
*Best in Class*
Though most triathletes may not have heard of JetBlack or the WhisperDrive Smart, true indoor aficionados should recognize both names. This trainer comes ready to go right out of the box with an included 11-speed cassette and a super-solid design. Better yet, this is a smart trainer with virtual feedback that transmits over ANT+FE-C and Bluetooth LE without the need for a power supply. The WhisperDrive Smart is ideal for those pain caves without an easily accessible plug; it can also be hauled out to the track for brick sessions and out to the parking lot for pre-race warmups without so much as contacting the rear tire. The only shocking caveat: ironically the WhisperDrive Smart is not the quietest trainer tested—likely due to its self-powered nature.