4.6
(33)
1,723
riders
51
rides
Road cycling around Mikuni-sammyaku offers a diverse and challenging landscape. The region is characterized by steep slopes, deep valleys, and numerous peaks, providing a dramatic backdrop for road cycling routes. This mountainous terrain, primarily straddling the border between Gunma and Niigata prefectures, features varied elevations and demanding climbs. Road cyclists can expect routes that navigate through rugged landscapes and offer extensive mountain vistas.
Last updated: July 10, 2026
5.0
(1)
173
riders
30.7km
01:57
920m
920m
Hard road ride. Very good fitness required. Mostly well-paved surfaces and easy to ride.
5.0
(1)
115
riders
41.4km
02:45
1,250m
1,250m
Hard road ride. Very good fitness required. Mostly well-paved surfaces and easy to ride.

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5.0
(1)
99
riders
69.7km
04:50
1,970m
1,970m
Hard road ride. Very good fitness required. Mostly well-paved surfaces and easy to ride.
35
riders
96.3km
06:28
2,510m
2,510m
Hard road ride. Very good fitness required. Mostly well-paved surfaces and easy to ride.
5.0
(1)
40
riders
37.3km
02:32
910m
910m
Hard road ride. Very good fitness required. Mostly well-paved surfaces and easy to ride.
4.8
(4)
33
riders
56.1km
02:58
670m
670m
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.
5.0
(2)
43
riders
54.0km
03:53
1,670m
1,670m
Hard road ride. Very good fitness required. Mostly well-paved surfaces and easy to ride.
32
riders
26.5km
01:45
750m
750m
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.
31
riders
99.5km
06:00
2,300m
2,300m
Hard road ride. Very good fitness required. Mostly well-paved surfaces and easy to ride.
27
riders
120km
07:31
2,570m
2,570m
Hard road ride. Very good fitness required. Mostly well-paved surfaces and easy to ride.
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There is an old pine tree with beautiful branches in the temple grounds. It is a must-see!
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Before the Meiji period, there were mileposts every 4km along the road. Mileposts are small mounds on either side of the road, but many have been demolished or only one side remains. However, this milepost remains on both sides.
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We headed to Lake Chuzenji at 8:30am. There was a lot of traffic on Irohazaka, but it was a pleasant ride. Along the way, we got a great view of the sea of clouds.
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The path along the irrigation canal is for pedestrians only, so you will have to walk your bike along it.
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A pleasant path. It's for pedestrians only, so you have to walk your bike.
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This is the place where the first Japanese translation of Conan Doyle's Sherlock Holmes stories was made, and this statue was erected to commemorate this.
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It is the 20th post town from Edo out of the 69 stations on the Nakasendo road. (Wikipedia)
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There are over 50 road cycling routes available in Mikuni-sammyaku on komoot. These routes offer a diverse range of experiences, from moderate rides to very challenging ascents, catering to various skill levels.
The Mikuni Mountains experience heavy snowfalls in winter, so the best time for road cycling is typically from late spring to autumn. Summer offers stable riding conditions, while autumn provides stunning vibrant foliage, especially around areas like the Mikuni Pass Skyline in Hokkaido, which is generally open from late April to early November.
Road cycling in Mikuni-sammyaku is characterized by steep slopes, deep valleys, and diverse peaks. The terrain is rugged and mountainous, offering demanding climbs with significant elevation gains. While there are some moderate routes, the majority of the 55 routes listed on komoot are considered difficult, with 34 routes falling into this category.
While the Mikuni-sammyaku region is known for its challenging terrain, there are a few easier options available. Komoot lists 3 routes as easy and 18 as moderate, providing less strenuous alternatives for beginners or those seeking a more relaxed ride.
The road cycling routes in Mikuni-sammyaku are highly rated by the komoot community, with an average score of 4.8 stars from more than 10 reviews. Cyclists often praise the dramatic mountain backdrops, challenging climbs, and the sense of adventure offered by the region's diverse landscape.
The region offers breathtaking scenery. You might encounter views of Mount Fuji on clear days from the Mikuni Pass near Oyama, Shizuoka. Other notable sights include the Kegon Falls, the peaceful marshlands of Mt. Naeba, and the striking red arch of the Matsumi Ohashi Bridge if you venture towards the Mikuni Pass Skyline in Hokkaido. The area also features numerous onsen and serene lakes like Shakunage Lake.
Yes, the Mikuni Mountains are home to majestic waterfalls and crystal-clear waters, particularly around Mt. Makihata. The famous Kegon Falls is also a prominent natural attraction in the broader region. Cyclists can also experience diverse ecosystems and vibrant autumn foliage throughout the range.
Yes, the Mikuni-sammyaku region offers several long-distance road cycling routes. For example, the Karamatsu Milepost – Sherlock Holmes Statue loop from 小諸 covers nearly 98 kilometers with significant elevation gain, providing a substantial challenge for experienced riders.
Yes, the region is accessible by public transport. Cyclists can travel to the countryside from Tokyo by train, taking their bikes on board when properly wrapped. The area is also well-connected to towns like Hakone, making it feasible to reach starting points for many routes.
Yes, the region offers various amenities. You'll find numerous onsen (hot springs) like Silver Mine Onsen and Komanoyu Onsen, which are perfect for relaxation after a ride. Some areas, such as the Mikuni Pass Skyline in Hokkaido, feature observatories with restrooms and cafes at the summit, providing refreshment stops for cyclists.
The challenging routes in Mikuni-sammyaku, particularly those around the Mikuni Pass near Oyama, Shizuoka, are known for their steep gradients. Cyclists can expect an average gradient of 10.5% over 6.75km, with sections reaching double-digit gradients of 14-16%. These routes are designed for experienced riders seeking a demanding ascent.
Many of the road cycling routes in Mikuni-sammyaku are designed as loops, allowing you to start and finish at the same point. Examples include the Lake Haruna – Steep Slope loop from 群馬県立 榛名高等学校 and the Yubatake Hot Spring, Kusatsu – Viewing Platform Shelter loop from Kusatsu, offering convenient options for exploring the region.
While cycling, you might pass by or be near significant cultural sites. For instance, the Karamon Gate, Nikko Toshogu is a notable historical site in the broader area. Additionally, Mt. Hakkai is a significant religious and historical site within the Mikuni Mountains, though its trails are more suited for hiking.


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