I Looked Into Ryokami Sanroku Campground
2026-09-05

My project of researching campgrounds, day-trip hot springs, and lodges one by one and writing them up on this blog has grown into quite a number of posts before I knew it. This time, since I've been looking at campgrounds in the Saitama area in a row, I wanted to check out an area a bit closer to the mountains.
What caught my eye this time was "Ryokami Sanroku Campground." Since the name includes "sanroku" (foot of the mountain), it gave off a vibe of being able to relax peacefully in nature, so I decided to look into this one.
Apparently the bathhouse building is equipped with as many as 10 showers, which gave me the impression that the bathing facilities are quite well-developed for a campground.
As for the Rakuten Mobile signal, the official tool gave a rating of C, so it seems like something worth keeping in mind.
I've summarized the details below.
What Kind of Place Is Ryokami Sanroku Campground?
Ryokami Sanroku Campground is apparently located in Ogano, Chichibu District, Saitama Prefecture. It operates seasonally from early May through late October, and seems to accept guests every day without closures during that period. Check-in is at 12:00 PM and check-out is at 10:30 AM, according to the information available.
Regarding pricing, the admission fee is apparently 300 yen for everyone from elementary school age up to adults, and 200 yen for preschoolers. On top of that, an auto site for bringing your own tent is priced at 4,000 yen per site, while an auto site with AC power is 5,000 yen per site. Bungalows start at 6,000 yen per unit, and cottages start at 20,000 yen per unit, so it seems to offer a wide range of options from tent camping to stays with a bit more comfort. For day camping, the fee including admission is 700 yen for elementary school age through adults, and 500 yen for preschoolers.
As for reservations, it seems bookings aren't made online but rather by phone in advance. For group use, a reservation deposit may be required in some cases, so if you're planning to go with a larger group, it might be reassuring to inquire early.

I felt like having such a wide range of options—from cottages to bungalows to auto sites—is nice because you can choose based on your family situation or group size. Though I have to admit, hearing "phone reservation" makes me a little nervous...
The Bathhouse with 10 Showers and Other Facilities That Caught My Indoor-Loving Attention
Personally, what caught my attention the most was the bathhouse building. There are separate bathhouses for men and women, and apparently, in addition to the bathtubs, there are as many as 10 showers installed. It seems more likely to be a regular bath rather than a hot spring, but even so, with that many showers available, it seems like wait times would stay relatively short even during busy hours. I wasn't able to confirm whether the toilets have washlet functions, but there are apparently 2 flush toilets, and a barrier-free toilet seems to be available as well, which should be reassuring for people of a wide range of ages.
As for power, it seems there are about 3 to 5 sites equipped with AC power. It doesn't seem to be available at every site, so if you want to use power, it's probably best to check when making a reservation. There are apparently 3 cooking/washing areas, and a small shop inside the management building, though I couldn't find details on what it stocks. I also couldn't find any information about Wi-Fi availability, so that's something you'd likely need to check on-site.
Rakuten Mobile Signal Conditions
As someone who's more of an indoor type, honestly the signal conditions are almost as important to me as the campground itself. When I checked the location of this facility using the official "My Area Network Simulation" tool, the overall rating came out as "C."
Since it's rated C, there may be spots where connecting is difficult or the connection becomes somewhat unstable, depending on where you are. Given that this is a campground located in a mountainous area, it seems like a good idea to know this in advance so you can plan accordingly. If you're planning to do any online communication or work during your stay, it might be reassuring to prepare things like a mobile battery ahead of time.

Hearing a C rating makes someone like me—an indoor type who relies on my phone—a little nervous. It really reminded me how important it is to check these things in advance.
Checking Out Nearby Tourist Spots Too
Near the campground there's apparently a waterfall called Maruko no Taki, which is included among Japan's 100 famous waterfalls, and it's reachable in about 5 minutes by car or roughly 30 minutes on foot. If you enjoy walking, it might be nice to stop by while taking a stroll. There also seems to be another waterfall about a 10-minute walk away (the name is written slightly differently across sources, but it's often referred to as Takataki), though apparently it can't be reached by car.
If you want to enjoy a proper bath a bit more, there's apparently a roadside rest stop called Ryokami Onsen Yakushi no Yu about 20 minutes away by car (around 12km). It might be worth considering this alongside the bathhouse at the campground itself.
Wrapping Up
To sum it up, Ryokami Sanroku Campground gave me the impression of being a campground with well-developed bathing facilities, including 10 showers in its bathhouse building. With a wide range of accommodation options from auto sites to cottages, and nearby waterfalls and hot spring facilities, it seems like a great fit for anyone who wants to relax leisurely in nature.
On the other hand, the Rakuten Mobile signal came out as a C rating, so it's probably worth keeping that in mind beforehand. If you're concerned about this, you can check using the official Rakuten Mobile tool, so it might be worth taking a look before you visit.
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