Hi,
I never ride 'laps' but have a goal & just head off.
Here on the north side of Brisbane, we ride a large ciruit with a 65km 'lap' that can be extended to 85kms, after about 10km; at 30km,s it can be extended further; and so it goes on.
Nothing repeated, forever something new, and is very satisfying.
Another out & back is a great 100km, with an excellent finish.
I was living out in Roma, western Queensland - for a while - a great spot to live.
Cool in the winter, warm in summer; lots of 'roos & other wild life - plus bird-life by the millions.
Head off, keep something in reserve, stay safe & enjoy...