Here’s a challenge for you long distance cylists! A 212km (almost 132 miles) cycling trip from Cancun to Chichen Itza. You can also sign up for shorter rides of 100km (62 miles) or 60km (37 miles); you won’t get to see Chichen Itza at the end, but all participants’ entrance fees will help support the Mexican Tuberous Sclerosis (TSC) Association.
To do the ride, you must have a road or triathlon bicycle, helmet and gloves, two spare tubes, and respect the maximum speed set by the guide (35 km/hr).
More details and registration here.