Tomioka Silk Mill and Shrines and Temples of Nikko
Plan this ride
Recorded distance
421 km
Riding-time estimate
7 h 41
Journey
Recorded itinerary
Distance and timing basis
Ordered leg totals agree within rounding. Stop distances are approximate sums of rounded legs. Stops, delays, approach and any separate return travel add time. Basis: producer-declared routed record.
Reading history stays on this device. My road watch requires a separate selection; opening it does not subscribe this ride.
Distance and riding time are measured on the routed road. Check local closures and conditions before you ride.
From Tomioka it runs 421 km to Tomioka; allow about 7 h 41 of riding. The stops in between: Arafune Cold Storage, Tajima Yahei Sericulture Farm, Shrines and Temples of Nikko and back through Tajima Yahei Sericulture Farm. The stored terrain estimate reaches about 1,200 m; a measured road-elevation profile is not available. The line favours views over speed.
Waypoint introductions and full write-ups
1. Tomioka Silk Mill
Tomioka Silk Mill is a long, low brick building with a timber frame, and it looks stranger than it is. In 1872, only a few years after the Meiji government opened Japan to the West, the state built this factory to produce silk by modern methods and sold it abroad to pay for the country's modernisation. A French engineer, Paul Brunat, designed it and hired French instructors, and the brick, laid in a pattern known as Flemish bond, was made locally by workers who had never seen a brick building before. The cocoon warehouses, with their sturdy roof frames, are still among the biggest wooden-framed brick buildings in Japan.
May refer to an earlier itinerary; verify against your selected route before riding.
Planning note
Tomioka Silk Mill is where the day begins. Next is Arafune Cold Storage.
2. Arafune Cold Storage
High in the mountains of southwestern Gunma, near the border with Nagano, a series of stone-walled pits sit among the trees on a hillside. They look like ruins, and in a sense they are, but in their day they were cutting-edge technology. The Arafune cold storage, built in the early twentieth century, used the cold air flowing out of crevices in a rocky slope, a natural wind cave or fuketsu, to keep silkworm eggs cool and delay their hatching. This allowed silk farmers to raise several batches of silkworms a year instead of just one, greatly increasing production. At its peak, the facility stored eggs for farmers from across Japan and even abroad. It is part of the UNESCO listing of the Tomioka Silk Mill and Related Sites, inscribed in 2014, which tells the story of how Japan became the world's largest exporter of raw silk.
May refer to an earlier itinerary; verify against your selected route before riding.
Planning note
Arafune Cold Storage comes up about 32 km into the recorded legs. Next is Tajima Yahei Sericulture Farm.
3. Tajima Yahei Sericulture Farm
Silk transformed modern Japan, and Gunma Prefecture was its heartland. In the village of Shimamura, now part of Isesaki, on the north bank of the Tone River, stands the farmhouse of Tajima Yahei, a sericulturist who developed a method of raising silkworms in the nineteenth century. He built a two-storey house with a ventilation structure on the roof, allowing air to circulate through the upper floor where the silkworms were kept, and his design was widely copied across Japan.
May refer to an earlier itinerary; verify against your selected route before riding.
Planning note
about 102 km into the recorded legs you reach Tajima Yahei Sericulture Farm. Next is Shrines and Temples of Nikko.
4. Shrines and Temples of Nikko
Cedar trees line the road into Nikko as if it were a cathedral nave. The Nikko Kaido avenue, planted over many years in the seventeenth century, runs for about thirty-seven kilometres and is counted among the longest tree-lined avenues in the world, and the trees are huge now, thick and dark, with a floor of moss. It makes a quiet start, and it sets the tone for the town, which is as much a forest as a religious site.
May refer to an earlier itinerary; verify against your selected route before riding.
Planning note
Tomioka Silk Mill closes the day.
Leg by leg
Tomioka Silk Mill to Arafune Cold Storage
Tomioka Silk Mill → Arafune Cold Storage is 32 km of rhythm rather than effort. Let it flow and let the view breathe.
Arafune Cold Storage to Tajima Yahei Sericulture Farm
Arafune Cold Storage → Tajima Yahei Sericulture Farm is 70 km of getting across. Ride it tidily and keep the enthusiasm for what comes after.
Tajima Yahei Sericulture Farm to Shrines and Temples of Nikko
Tajima Yahei Sericulture Farm → Shrines and Temples of Nikko is 110 km of getting across. Ride it tidily and keep the enthusiasm for what comes after.
Shrines and Temples of Nikko to back through Tajima Yahei Sericulture Farm
Shrines and Temples of Nikko → back through Tajima Yahei Sericulture Farm is 106 km of getting across. Ride it tidily and keep the enthusiasm for what comes after.
back through Tajima Yahei Sericulture Farm to back through Arafune Cold Storage
back through Tajima Yahei Sericulture Farm → back through Arafune Cold Storage is 68 km of getting across. Ride it tidily and keep the enthusiasm for what comes after.
back through Arafune Cold Storage to Tomioka Silk Mill
back through Arafune Cold Storage → Tomioka Silk Mill is 34 km of rhythm rather than effort. Let it flow and let the view breathe.