This description starts at the lower end of the circular route, at a place called Les Rives. There are one or two parking spaces along the road; otherwise, park wherever you can.
It is perfectly possible to start from the top, at the church car park in Saint-Jean-d’Hérans (and thus begin at point (4) in the description).
(S/E) Below Les Rives, a track leads down towards a field; follow it and, 50 metres further on, take another track on the right which descends and joins the woodland. Do not go all the way to the field. Then follow the yellow markings for about 2 km, ignoring a few tracks leading down towards the Drac on the right.
The track becomes a footpath, then a track again, running through the fields.
(1) At the ‘Les Chaux’ sign, near the high-voltage power line, turn left towards Saint-Jean-d’Hérans. The path joins a stream, which you cross before heading uphill to the left. Do not follow the stream upstream. This path will become a track. Continue south-east.
(2) At the ‘Caillat 1’ sign, turn right; then, 100 metres further on, at the ‘Caillat 2’ sign, leave the track and take a footpath on the left.
(3) At the Tracot signpost, turn left towards Saint-Jean-d’Hérans. The path descends steeply for a short while, then becomes a good track and joins the D34B at the entrance to the village of Saint-Jean-d’Hérans. Enter the village and head for the church.
(4) A sign points towards Les Rives, heading north. Follow this tarmac road, which becomes the Chemin des Fontaines. Do not turn left downhill; keep on the level path. Pass a mobile phone mast, then the cemetery.
(5) At Grand Champ, shortly after the cemetery, a sign points to Paquier on the left. Take this path downhill to Paquier.
(6) Cross the tarmac road and head down a smaller road opposite, towards Les Rives. In the hamlet of Les Rives, look out for the yellow markings to turn left and continue level, then take the second road on the right downhill towards the car park (S/E).
) Thanks for that comment! ...Actually, there are a few little hills here and there, I think. .;-)