Hofolding would not even call it a racing bike highlight right now. Rather as a gateway to Hofoldinger forest and thus the Munich hinterland to Holzkirchen, the Irschenberg, the lakes, etc. Therefore: From the town and gas.
In itself a great route through the forest, basically little traffic, but if so, then like crazy people in souped-up sports cars that make the tires smoke, or huge tractors that actually need the narrow road to themselves. So be careful!