Im a big fan of using motorways to run in engines.
a brief bit of city cycle then 20 minutes or so up on the motorway, a brief turn around in city cycle traffic and then back the other way on the motorway.
the best example near me right now is the run from ipswich to toowoomba.
if you hit that and pull off at every major turn off then back on after a quick sight see back on and keep on going.

