IBIKE DASH (ibikesports.com; $199)

WHAT IT IS: A weatherproof, handlebar-mounted iPhone dock that works with a fork-mounted speed sensor. 

HOW IT HELPS: By collecting mountains of data. During rides, your speed, distance, routes, lap times, and more get logged. Afterward you can sync to a PC or Mac and dull the pain of recovery time by poring over your stats. Its other service? Sparing you the indignity of tucking your phone into your Lycra shorts.