Miyama Souki (a trail runner who has run through the mountains of all 47 prefectures)

2025.01.272025.08.04

“Trail Running University!A Mountain Journey Covering the Highest Peaks of All 47 Prefectures” is a blog (media) that primarily covers impressions of participating in competitions and the use of equipment.

The blogger (Miyama Souki) climbed mountains in all 47 prefectures while sleeping in his car, and saw Japan’s 100 Famous Mountains and the 100 Greatest Mountains in Japan along the way.

Who is Miyama Souki?
1. The origins of Miyama Souki
2. Encounter with trail running
Miyama Hashiki is wearing Hoka One One.
Challenge Japan’s 100 Famous Mountains
Road bike history (since February 2013)

Sponsored Link

Who is Miyama Souki?

The blogger (Miyama Souki) started running in 2012 and is now an ultra-trail runner.

I’m a tail-ender (a trail runner who runs at the back of the pack, though) (lol)

Miyama Souki’s titles (qualifications/tweets):

Ultra trail runner
Blogger/YouTuber
Social Insurance Labor Consultant
Financial Planner Level 2 Technician
Looking for a bride!

He posts about trail running and mountain climbing on YouTube. Check it out from the banner below!

Watch the Trail Running University video here.

The origins of Miyama Souki

The Trail Running University blogger (Miyama Souki) as a child.

During elementary school, he ran as a sprinter, limited to the 100m.

I ran the 50m in the 8-second range in fourth grade and the 6-second range in sixth grade.

I always placed first at school sports days and participated in class and district relays.

I represented my elementary school as the anchor in the 400m relay. However, winning without any effort was boring.

The marathon, which involves long distances, was my second least favorite event (swimming was my number one).

There were club activities in middle and high school, but I didn’t particularly participate.

I’m not interested in running, so I didn’t join the track and field club. I didn’t do much sports in college either.

The more I move, the weaker my body becomes (I’m an indoor person who loves reading).

Ultra-trail runner training methods! 100km mountain training.

Strengthening trail running climbs (physical strength)! Training at the gym.
Miyama Souki

At first, even running 300m was difficult. Recently, I completed a 106km trail running event (FTR100).

Midori (Trainee)

It’s fascinating that a 100m sprinter can run 100km in the mountains! All I have to do now is complete a 100-mile race.

Even after entering the workforce, I couldn’t find a sport I could devote my life to.

Taekwondo and tennis didn’t suit me, so I started searching for a sport I could devote my life to.

Then, I learned about the Tokyo Marathon on the TV news.

At the time, I had no intention of becoming a runner.

A few years later, in May 2012, the Sendai International Half Marathon was opened to the general public.

After seeing the event broadcast on TV,

I decided to become a runner. After struggling, I made the transition from sprinting to long-distance running.

My first 10km run took me 1 hour and 45 minutes. (The distance and time are not exact.)

Encounter with trail running

While searching for my first marathon to participate in, I discovered the Sendai Izumigatake Trail Run.

As the timing was perfect for me, I entered immediately.

I ran the 9km mountain trail in exhilaration and completed the course safely.

This was my first marathon (trail run).

I enjoyed it so much that I decided to devote my life to trail running. (^^♪

I’m often asked, “Did you go from being a road runner to a trail runner?”

I answer, “I’ve been a trail runner from the beginning.” (^^)v

I’m good at running in the mountains, but I hate running on paved roads (I’m not good at climbing mountains, but I excel at descending).

Eliminate knee and calf pain with marathon tights! Reduce muscle fatigue.

Wacoal CW-X sports tights have compression to improve posture and reduce fatigue.

The following year, I completed the Sendai International Half Marathon, my original goal.

Despite barely being able to run 10km, I decided to run 20km in preparation for the Sendai International Half Marathon.

This caused me to develop iliotibial band syndrome (runner’s knee).

I continued to push myself and was unable to run for about 10 months.

Although my iliotibial band syndrome never recovered, I successfully completed the Sendai International Half Marathon.

I then discovered the Hasetsune Cup and the Fuji 100 Mile.

Improve your running ability with strength training! Trail runners can strengthen their legs and hips with machines.

Training How much practice do beginners need for trail running? Train in the countryside and strength training.

Participate in any trail running competitions that interest you (and then retire).

I trained by running alone around my house and in the mountains.

Because I was self-taught, I often had leg and back injuries, but I was able to increase my running distance.

Completed 40km and 50km races in 2014. Completed the 70km Hasetsune Cup in 2015.

Entered the Fuji 100 Mile (at the time STY) in 2018, but crashed in the Tenshi Mountains.

Completed 100km trail runs in 2021 and 2022.

I’ll run my first 100km trail run in 2023. I attempted the 100 Mile, but I was completely helpless.

My training continues, aiming to complete the Fuji 100 Mile and UTMB. I’m going to bring home a finisher’s vest!

What are the odds for the Fuji 100 Mile? I entered using points from the qualifying race.

Ultra-trail runner training methods! Training for a 100km mountain run.

The road to the Fuji 100 Mile! How to conquer the course, how to train, and what to bring to complete the race.

Previous sports history (from sprinter to ultra-trail runner)

I’m a 100m sprinter, and I’m also a swimmer and long-distance runner.

I’m not good at running. Because I was so weak, I joined the judo club in junior high.

I didn’t find it rewarding, so I spent half my time going home after school.

After entering the workforce, I attended taekwondo and karate dojos.

Even after achieving my first dan, my frail body remained.

After that, I attended tennis school, but I still didn’t feel fulfilled.

I eventually made trail running my lifelong sport.

I’ve also started using road bikes as part of my training.

Sponsored Link

Miyama Hashiki is wearing Hoka One One.

Watch the Trail Running University video here.

Miyama Souki wears Hoka One One for road and trail running.

Sports equipment (brands) used:

Road shoes: Adidas > Nike > Asics > Hoka One One (currently)

Trail running equipment: The North Face and Salomon. Shoes: Hoka One One.

Events he would like to complete in the future:

Ultra-Trail du Mont-Blanc (CCC, TDS, UTMB, Tordesian)

Sponsored Link

Challenge Japan’s 100 Famous Mountains

100 famous mountains he has visited so far (currently available videos here):

Mount Iwaki
Hachimantai
Mount Iwate Mt. Hayachine
Mt. Gassan
Mt. Zao (Mt. Katta, Mt. Fubo, Mt. Ushiroeboshi)
Mt. Adatara
Mt. Aizu Bandai
Mt. Tsukuba
Mt. Hiuchigatake (July 29, 2025)
Mt. Shibutsu (July 30, 2025)
Mt. Hotaka
Mt. Tanigawa (Opening Climb)
Mt. Naeba
Mt. Makihata
Mt. Akagi (Mt. Kurohino)
Mt. Daibosatsu
Mt. Kumotori
Mt. Tanzawa
Mt. Amagi (Mt. Manjiro, Mt. Manzaburo)
Mt. Fuji (Yoshida-Gotemba Route)
Mt. Kirigamine (Mt. Kuruma) (July 18, 2025)
Mt. Utsukushigahara (O-no-Atama and O-no-Hana) (July 19, 2025)
Mt. Hakuba
Mt. Okuhotaka (from Kamikochi)
Mt. Kuju (Mt. Miyamakirishima)
Mt. Aso (Mt. Nakadake, Mt. Takadake)
Mt. Kaimon

Also climbed the highest peaks in all 47 prefectures. (I wrote about it at the bottom of the article) I also occasionally visit Japan’s 100 famous castles.

YouTube videos of trail running competitions! Running through Japan’s 100 famous mountains.

What is the height and size of the Terus 35? How to use it for mountaineering camping! Review and evaluation

Review and evaluation of the Millet Saas Fee NX 60+! Camping in a tent during summer mountain hikes.

Sponsored Link

Road bike history (since February 2013)

Road bikes I’ve ridden so far:

Giant
WINDMARK 2700 Claris (first generation) since February 6, 2013
Bianchi
Bianchi 7 SORA 2015 model (second generation)
March 2019
Scott Speedster SE Ultegra 2018 model (third generation)
Cannondale SuperSix Evo Ultegra (fourth generation)
SuperSix Evo carbon frame review
Bryton Rider 450 (cycle computer)
Bryton Rider 750
Fulcrum Racing 4 (wheels)
Fulcrum Racing 5
Campagnolo Zonda

Zwift available from April 12, 2020

Wahoo Fitness Kicker Core Smart (direct drive)

Complete the Fuji 100 Mile (170km)! A brief biography and equipment by Miyama Souki.

Trail running event participated in by Miyama Souki

Trail Running Biography

May 2012
Started running in my neighborhood
(I couldn’t even run 300m)
September of the same year
Completed my first 9km trail run
(Running in the mountains is fun!)
May 2014
Completed the 43km Outer Chichibu Trail Run
October 2015
Completed the 72km Hasetsune Cup
September 2019
Completed the 74km Mt. Hotaka Sky View Trail
November 2021
Completed the 106km Chichibu & Oku-Musashi FTR
September 2022
Completed the 108km Hiroshima Bayside Trail
April 2027
Planned completion of the 170km Fuji 100 Mile

The trail running gear I use is as follows:

美山走希（ウルトラトレイルランナー）の装備。

Watch Trail Running University videos here.

Participated in trail running, full marathon, and road bike competitions.

2012

September: Sendai Izumigatake Trail Run 9km
October: National Sweets Marathon 10km
November: Abukuma Riverside Marathon 10km

山を走るならサロモンのアドバンスドスキン１２セットが最適な理由。

世界で最も使用されているトレイルランニング用ザック。それはサロモンのアドバンスドスキン１２セットだ。ＵＴＭＦやＵＴＭＢを含むあらゆる大会で使われている。アドバンスドスキン１２セットなのは２０１６年モデルまで。２０１７年からは「ADV SKIN １２NH」（L39483300）と呼ばれている。

2013

May: Sendai International Half Marathon (2:31:11)
June: Higashine Sakuranbo Half Marathon (Time Out)
August: Zao Trail Run 42km (Sekimon Closed)
September: Sotochichibu Trail Run 44km (1st time)
October: Yamagata Marugoto Marathon (2nd time completing the half marathon)
October: Matsushima Half Marathon (3rd time completing the half marathon)
November: Iizaka Lake Moniwa Full Marathon (First time attempting a full marathon)

https://utmf.info/epson -wristable-gps-mz500/

2014

February: Iwaki Sunshine Full Marathon (cancelled due to snow)
March: Itabashi City Full Marathon
April: Hasetsune 30K (1st time)
May: Soto-Chichibu Trail Run 43K (2nd time)
July: Towa Road Race Half Marathon
July: Mt. Fuji Climbing Race (5th Station Course)
September: Trenic World Ogose-Tsukikawa 40K
October: Chiba Aqualine Marathon Lason (It was supposed to be a medal for completing the race…)

Click here for the Trail Running University video.

Trail running competitions I participated in in 2015:

March: Koga Hanamomo Marathon (full marathon)
April: Hasetsune 30K (Japan Mountain Endurance Race)
May: OSJ Okukuji Trail Run 30km
June: Nanashigure Trail Running Race 34km
September: Tour de Lake Inawashiro 90km
Tour de Tohoku (Ride Management Rider)
Shiraishi Zao Kogen Half Marathon
October: Hasetsune Cup Japan Mountain Endurance Race (72km)
November: Kobe Marathon
I missed my return flight because I finished too late.
December: 10th Shonan International Marathon (Full Marathon)

The medal design for completion was completely redesigned.

あなたも楽にフルマラソンを完走できる！食べて眠って強くなる方法。: 初心者でも簡単！走る距離を１０ｍから４２Kmにするトレーニングと大会攻略方法を紹介。トレイルランニング (美山文庫)

Amazonの商品レビュー・口コミを見る

Trail running competitions I participated in in 2016.

February: Tokyo Marathon
July: Iwakisan Trail Running Festival (Aomori Prefecture)
September: OSJ Mt. Adatara Trail Run 50K
October: Yamagata Marugoto Marathon
October: Osaka Marathon
November: Fun Trails 100K (FT50)

Click here for Trail Running University videos.

Trail running competitions I participated in in 2017.

June: Spa Trail (STSK 72K)
August: Zao Trail Run (Miyagi Prefecture)
October: Hasetsune Cup (Japan Mountain Endurance Race)
November: Fun Trails 100K (FTR100)

１００Km以上のトレイルランニング大会一覧！難易度と完走率について

長らく日本のトレイルランニング大会で長距離と言えばハセツネＣＵＰの７２Kmだった。最近は新しい大会が続々と新設されている。それらの中でも国内最高峰のレースがＵＴＭＦである。ＵＴＭＦとは富士山を１周する１７０Kmのレースである。

スポーツしてない運動不足が７２Kmの山を夜通し走った記録（日本山岳耐久レース・ハセツネｃｕｐ）: あまりの寒さと空腹で命の危険が…それでも前に進み続けた物語。トレイルランニング (美山文庫)

Trail running competitions I participated in in 2018.

February: 9th Iwaki Sunshine Marathon
March: Tohoku Food Marathon, 4 hours 49 minutes (personal best)

東北風土マラソン結果！コース上のステーキとフカヒレでサブ５達成。

宮城県で開催される２つのフルマラソン。１つが宮城復興マラソンで、もう１つが今回の風土マラソンだ。宮城復興マラソンが都市型マラソンなら風土マラソンは地方のマラソン大会である。最初はFOODマラソンだと思ってた。なんたって食べるのがメインの大会...

東北風土マラソンのコスプレ仮装ランナーと写真撮影！はっとン出現。

次のエイドの南三陸町「めかぶの味噌汁」も良かった。海藻の入った味噌汁なら珍しくないが、「めかぶ」ならでは歯応えと味がよく出ている。美味しい食べ物が続々登場する東北風土マラソン。東北風土マラソン２０１８前回記事の続き。登米市の「はっと汁」を食...

April: Fuji 100mile (STY)

Fuji100mile完走に必要な全装備品紹介！雨具ライト電池タイツ防寒着の準備。

いよいよＵＴＭＦ・ＳＴＹに挑む１ヶ月前となった。ボランティアやサポート担当もそれぞれ準備している事だろう。２０１８年はＳＴＹに挑戦するので、実際に必携品を揃えてみた。トレイルラン用品があまり売ってない地域もあるだろうから早めにAmazonや楽天市場で購入しよう。

Fuji100mile・ＳＴＹの参加案内を準備して大会当日、富士山子どもの国で受付。

「ＳＴＹに初挑戦！天子山地を攻略する為の必携品とタイムチャート作成」の続き。マウントフジ１００（Fuji100mile・ＳＴＹ）の参加案内が来ない。大会まであと２週間なのに…と思っていた。そうしたらメールで参加案内や富士山こどもの国への入場...

June: Skyline Trail Sugadaira (Nagano Prefecture)

スカイライントレイル菅平５０Kmを走破せよ！真紅の赤で燃え上がれ。

スカイライントレイル菅平の日がやってきた。週間天気予報では降水確率１００％の雨だったが、当日になると４０％に低下した。結果、雨は降ることなく、走るには最適な天気であった。この大会は参加費１８０００円に宿泊費６０００円が含まれている。宿泊費が...

https://utmf .info/11th-skyline-trail-sugadaira/

September: Hakuba International Trail Run (Nagano Prefecture)

白馬国際トレイルランはエントリー合戦の人気大会！宿泊と完走率は？

特に雨の日と急登では必須とも言える。ロングコースの５４Kmは歩いてると関門に間に合わない。そんな時、ストックがあればスイスイ登って行ける。お勧めはブラックダイヤモンドのストックだ。Ｚポールの機能で折り畳める。これならトレイル用ザックにも容易に収納できる。

November: Kanna Mountain Run & Walk (Gunma Prefecture)

神流マウンテンラン＆ウォークに参加！ロングコース（４０Km）完走へ。

神流マウンテン＆ウォークはエントリー合戦になる。スーパーロングコースと宿泊先の争奪戦が凄まじい。どちらも１０分で終了するほどだ。さっさとで予約するんだった。スーパーロングコースはシングルとペア（２人）があってペアだと参加しやすい。だが、それ...

神流マウンテンラン＆ウォーク完走！群馬県土産の恐竜の卵とは？

「神流マウンテンラン＆ウォークに参加！ロングコース（４０Km）完走へ」の続き。霧の城山付近でスーパークラスの選手達が追い付いてきた。この付近はロープと鎖場がある危険地帯でもある。もうすぐ１０Km地点のエイドステーションだ。エイドではそれなり...

December: Hachimine Trail Run (Tokyo)

東京八峰マウンテントレイル参加！４０Kmの山を８時間内に走破せよ。

２０１８年１２月２４日東京八峰マウンテントレイルが開催された。２４日が祝日なのは今年最後となる。そして、いつものように大会翌日は有給取得済みである。１２月２３日に高速バスで東京に向かう。翌朝、新宿駅に到着。

Watch the Trail Running University video here.

Trail running competitions I participated in in 2019.
February: Shizuoka Marathon (DNS), Shizuoka Prefecture

自分史上最速を目指せ！静岡マラソンの参加案内とナンバーカード到着。

静岡マラソン２０２５の記事はこちら「静岡マラソンの完走メダルは？クリフトン9で走った結果（応援ナビ）」自己ベストを更新！静岡マラソンの参加案内とナンバーカード到着。静岡マラソンと同月開催のいわきサンシャインマラソンが中止になった。そもそも２...

March: Ishinomaki Mountain Marathon, 50km, Miyagi Prefecture
May: Iwate Kirameki Marathon, 42km (4 hours 59 minutes), IwatePrefecture
May: Soma Reconstruction Cycling, 100km, Fukushima Prefecture
June: Century Ride, 164km, Miyagi Prefecture
June: Echigo Country Trail, 53km, Niigata Prefecture
September: Tour de Tohoku (Kitakami Fondo), 100km, Miyagi Prefecture
September: Joshu Hotaka Sky View Trail, 78km, Gunma Prefecture
October: Japan Mountain Endurance Race (Hasetsune), 72km, Tokyo (Cancelled due to Typhoon Hagibis)
October: Cycle Festa Marumori, 70km, Miyagi Prefecture

ウルトラトレイル・マウントフジ2019（ULTRA-TRAIL Mt.FUJI 2019）

Amazonの商品レビュー・口コミを見る

kw=”Fuji 100mile 2019 (ULTRA-TRAIL Mt. FUJI 2019)”]

All races in 2020 were canceled due to the impact of the COVID-19 pandemic.

March: Tokyo Marathon (full marathon) – No refunds even if canceled
April: Fun Trail FTR50 52km – 40% entry fee refund
May: Trenic World Sai no Kuni 100km – 60% entry fee refund
July: Mountain Trail in Nozawa Onsen 65km – Cancelled
August: Mahiru Mountain Trail Run 50km – Postponed to 2022
September: Joshu Mt. Hotaka Sky View Trail 143km – Cancelled
September: Giro de Shonai (road bike) 210km
November: Fun Trail FTR100 100km

新年は彩の国１００Kｍと武尊山１２８Kmの完走が目標！Fuji100mileへの道のり。

３月　東京マラソン　４２Km４月　FTR５０　５２Km５月　彩の国トレイル　１０５Km７月　マウンテントレイル in 野沢温泉　６５Km８月　真昼山地トレイルラン　５０Km９月　上州武尊山スカイビュートレイル　１４３Km１１月ＦＴＲ１００　１０５Km

トレイルランニング教本: 山を１００Km走るトレーニング方法 (美山文庫)

Trail running competitions I participated in in 2021.

July: Mountain Trail Nozawa Onsen, 65km
September: Giro de Shonai (road bike), 140km
November: Fun Trail FTR100, 100km

2022

May: Aso Round Trail, 120km
May: Sainokuni Trail Run, 105km
August: Mahiru Mountain Trail Run, 53km
September: Hiroshima Bayside Trail Run, 108km
October: Shiga Kogen Extreme Trail, 55km
December: Izu Trail Journey, 70km (unsuccessful)

Road bike events are here.

Autumn 100km Hot Spring Ride (Natori Marumori)
Tour de Iwaki
Sash of Hope, Kitakami Ride, 100km

Trail Running University videos are here.

Planning to participate in a race from 2023 onwards! The road to the Fuji 100 Mile.

2023 (Click the link to view details of the event)

March: Tokyo Marathon
April: Fuji 100mile 170
May: Aso Volcano Trail Run 108
June: Oku-Shinano 100
October: Hasetsune Cup (Japan Mountain Endurance Race) 70
November: Otani Salt Road Trail Run 79
December: Izu Trail Journey 70

2024 (List of potential events)

April: Fuji 100mile (KAI 70K) – Not selected
May: Sainokuni Trail Run 100km (Ended at the second checkpoint)
June: Oku-Musashi Long Trail Race (Rescheduled)
July: Shiga Kogen 100 (DNF)
September: Shinetsu Gogaku Trail Running Race 110 (DNS)
October: Shinshiro Spartan Trail Classic 84
November: Rokko Mountain Range 24 Peaks Hunt 45
December: Boso Peninsula Crossing Race 70

Watch the Trail Running University video here.

I was unsuccessful in the 2025 Kai 70, and the Fuji Five Lakes Ultra Marathon reached capacity.

2025 (List of potential races)

March: Shizuoka Marathon (Gate closure at 40km)
April: Unsuccessful in the Fuji 100 Mile (KAI 70K)
April: Fuji Five Lakes Ultra Marathon (Reached capacity before registration)
Climb Japan’s 100 Famous Mountains and the Highest Peaks in All 47 Prefectures! Unemployed, Single, Car Camping

Starting in 2025, rather than participating in trail running competitions, I’ll embark on a journey to conquer the mountains in all 47 prefectures.

I’m not necessarily focused on the highest peaks in each prefecture, but I won’t be satisfied until I’ve visited all 47 prefectures.

I want to color in this prefectural milestone as soon as possible.

Highest peaks in each prefecture I’ve climbed so far (mountains in yellow are those I plan to climb in 2025)