Complex sentence: As the primary bus system in the county, they operate lines to Petaluma, Santa Rosa, Cotati, Rohnert Park, Healdsburg and Guerneville, and run one inter-county route to San Rafael in Marin County.
Split into simpler sentences: As the primary bus system in the county, the system operates lines to Petaluma, Santa Rosa, Cotati, Rohnert Park, Healdsburg, and Guerneville. It also runs one inter-county route to San Rafael in Marin County.