Minamirinkan, in Yamato city, is a little to the south, and the road that connects them is Route 16, the great ring road around Tokyo, which carries enormous traffic.
The ride that ends here began in the mountains of Gunma, around Mount Haruna and Ikaho, so the last section is an urban one. The roads are busy, with lights and lanes, and the surface is good but dull. Do not expect to be alone: bikers of every kind use this ring road, and on a dry Sunday morning you will see groups of riders on big tourers and small commuters sharing the same lanes. Route 16 has a reputation in Japan for car culture and late-night drivers, and its big roadside stores, restaurants and car dealerships are all around. Keep your distance and watch for lane changes. A weekday evening is the busiest, so a weekend morning is better.
Despite the sprawl, the area has green pockets. The Tama Hills are crossed by narrow lanes between woods and bamboo, and a few old farmhouses and small shrines survive. Machida has a long history as a market town, and its main street, near the station, has a lively, crowded character. The nearby Tsurukawa Kaido, an old road, was once used to carry silk and other goods to the port of Yokohama.
Fuel is no trouble. Stations are frequent along Route 16, and family restaurants, ramen shops and convenience stores are everywhere. A bowl of ramen and a plate of gyoza at a roadside restaurant is the usual rider's meal. The Odakyu and JR lines run through Machida, which makes the final leg home easy.
Take your time on the last stretch. The mountains are far behind, but the evening light on the hills can still be pleasant.