Straddling Hiratsuka and Oiso, Komayama is a mountain named after the Koma clan of the Goguryeo Kingdom. During the late 6th and early 7th centuries, the Koma clan of Korea fled to Japan seeking refuge and landed on the coast of Oiso. While the Koma clan was eventually granted land in parts of Saitama, the mountain retains its name to this day.
Komayama has several hiking trails, but the easiest and most popular one starts from Oiso Station and ends at the scenic Komayama Park.
Komayama Shonan Daira Hiking Information
Mountain Name: Komayama (高麗山・こまやま)
Location: Kanagawa
Difficulty Level: Beginner
Average Hiking Time: 2 hrs 10 mins
Total Hiking Distance: 6 km
Summit Altitude: 168 meters
Best Season: All year-round. July and August may be too hot for hiking.
Hiking Trail
Oiso Station
The trail is accessible from Oiso Station of the JR Tokaido and Shonan Shinjuku lines. If you need to stock additional supplies, there is a Lawson near the station.
If you have time for a detour, you can also drop by to take a photo of the historical Oiso Geihinkan, which was formerly an affluent merchant’s vacation house. The actual route is opposite of this house, however.
To reach the trailhead, follow the path between Myodaiji (妙大事) and Mitake Shrine (御嶽神社) all the way to Takada Tamotsu Park. This is where the paved road ends and where the dirt path begins.
Trail Proper
From here, the path is pretty much straightforward. At one point, you’ll find an incline with log stairs,
faded signs that look like they belong in a horror movie,
a rather intimidating footpath with handrails made of metal poles that,
and most importantly, signs that tell you which direction to take.
Shonan Daira (Komayama Park)
Your final stop is Shonan Daira, a flat area that’s a portion of Komayama Park. This is a commercial area where you will find benches and tables where you can rest. There are two observation decks where you can take in lovely views. You even get to see Mt. Fuji if the skies are in a good mood.
As for food, there’s a restaurant that sells meals from 11:00 to 14:00. There’s also a small shop that sells snacks and ice cream.
To get back to Oiso Station, you can either continue your hike following a dirt road or get on a bus. Make sure to check the bus schedule beforehand so that you don’t miss it if you opt for the latter.
Overall, the hike is pretty easy. I had a bit of difficulty finding the trailhead, but it was pretty much smooth sailing after that.
