For organized road cycling events, there are a series of typical distances that travel to complete them. Since cycling is generally considered an endurance event, a variety of distance choices are available for the rider, from beginner to advanced rider.
Typical ride distances (all approximate) are as follows:
8 mi/13 km - for fun and beginner rides
12 mi/19 km - longer beginner ride
20-25 mi/32-40 km - first "serious" distance ride distance; frequently used as a short ride to train for longer rides
35 mi/56 km - moderate distance ride
45 mi/72 km - longer distance ride
62.5 mi/100 km - the
metric century Most people, with appropriate training, can ride such. Achieving such is nevertheless a personal milestone.
70 mi/112 km - slightly longer than a metric, for a bit of additional challenge
100 mi/160 km - the
full century; quite a challenge, considered the longest typical 1-day endurance event
130 mi/200 km - the
double metric
190 mi/300 km - the
triple metric
200 mi/320 km - the
double century