• We have updated the convention- overview

  • The hall of FunTrails50k was changed. Please confirm access & acommodation page about access.

  • opened the English site.


1Keep rules and manners of mountains (Fun trails own policy)

In order to participate in this race, you must fully understand and agree to the following conditions and responsibilities.

  • Prepare one pocket for your garbage and do not throw garbage along the course.
  • Also pick at least one garbage along the course to keep mountain clean.
  • Greeting to others; once when you meet 10m before and twice when you pass each other, with gratitude.
  • Priority hikers. Always after them.
  • Do not run when you pass hikers on the course. Do not scare them.
  • You must stay on the trail at all times. Do not step or damage plants.
  • Do not use headphone otherwise you can’t hear any attentions and greetings. Enjoy nature’s sound!
  • Remember the feeling of gratitude to the mountains.


Any male or female 18 years of age or older as of race day, who is in good health and can complete the race without getting lost. For youths who are 18 or 19 years old, parental/ guardian permission is required. You will be required to provide the name and date of the trail race(s) as well as your race number and finish time(s). You will be also required conditions as below;

  • FTR100 You must have finished at least 2 times of over 50km trail run race or 1 time of over 100km trail run race since Jan .2014 to Sep.2016.
  • 50FT You must have finished over 30km trail run race last 2
  • You must have done your heath check within 1 year.
  • You will be also required conditions as below.
    • ※1“Past two years” means since Jan .2014 to Sep.2016.
    • ※2The use of trekking poles is prohibited due to nature protection and other runners and hikers’ safety .


Funtrails 100k Round Chichibu & Okumusashi


Get off at Seibu-Chichibu train station (Seibu line) and walk 880m, takes about 15 minutes.

Seibu line

Or get off at Chichibu train station (Chichibu line) and walk 400m, takes about 3 minutes.

Chichibu line


Take the Hanazono I.C. exit off the Kanetsu-Jidoshadou highway and go to Chichibu/Mitumine area, takes about 50 minutes using Minano yorii bypass. In Chichibu city, turn right at Ueno-cho cross road at route 299.


Chichibu inns association (Japanese only)

FunTrails50K Twolakes&Green line


Get off at Hanno train station (Seibu Ikebukuro line) and wall about 20minutes (about 1.4km) or Higashi-hannno station( Hachikou line) and walk about 25minutes(about 1.7km).

Seibu line


Take the Sayama-Hidaka I.C. exit off the Metropolitan Inter-City Expressway and go to Hanno area, and about 7.1km drive or Oume I.C. exit off and 9.0km drive.

  • The parking area in Hanno Chuo park will not be able to use. Please park your car any parking lot around Hanno station.

For more information about accomodations around Hanno, see this site

“FUN” for members of FunTrails

Discover the FunTrailRun!
The same feeling both beginners and top-athlete…“Enjoy running!!”
The purpose is finding happiness in our heart through trail running, which means everyone should be happy, not only trail runners but also other hikers, local people and who helps us enjoy trail running.
FunTrails will provide various events which advise you how to improve your running form, nutrition,
health care on the trail to avoid leg or stomach pain. We are looking forward to seeing you!

Shunsuke Okunomiya, Representative of FunTrails