Not sure what is close to Inverness, you will be approx a couple of hours West of Stonehaven, but if your travelling up by car, you will pass between Dunfermline and Falkirk, depending if you are close to them on the Sunday they run you would be welcome at both.
www.ddrcc.co.uk
www.falkirkrcc.co.uk
We have a calendar online at Dunfermline, we race most Sundays outdoors on our permanent track.