My longest ride is 110km/68miles. I don't normally try to ride any further than 100 km, as I always ride solo, and
organised rides don't exist. So 100km is a good target for a solo rider. Also all my 100km rides are hilly.
My goal this year is do a 100km ride every month. So far so good.

Normally I like to ride between 40km/25ml and 80km/50ml, this is usually done flat-out.

Although as I get older (32) I am starting to enjoy the longer, slightly slower rides.

CHEERS.

Mark