Bike
Off-Road Cycling: TnT now has a page dedicated to everything off-road, including off-road triathlon, MTB, gravel, cyclocross, and gran fondo.
Training & Rides
Cycle Routes - discover and download cycle routes which have been ridden and recommended by TnT members
Friday Morning Brick Ride+Run - early morning bike hill repeats followed by run around the Palace.
Tokyo Cycling Club - organises rides through their forum
Half Fast Cycling - Facebook group for organising rides and discussing cycling in Japan
Rolling Japan - English-language website with cycling routes all over Japan. Each route links to Tabi-rin (Japanese) which has links to bikemap.net (worldwide, English). KML files can be downloaded, but if you prefer GPX, you can click on the "Open in Bikemap Web" button, where you can download the GPX for each route.
Chiririn - Japanese-language website with cycle routes all over Japan; unfortunately there are no GPX files, but it is a good resource for finding new routes.
Tabi-rin - the Japanese Tabi-rin website is a good resource for discovering interesting places to ride. You can download KML files for your Wahoo or Garmin head unit. There is also a Tabi-rin International with just a few courses.
Shimanami Kaido - iconic ride across bridges linking Shikoku with Honshu [maps here] [Hotel Cycle]
Miura Peninsular - Google Map of rides around Miura Peninsula, showing "aid stations" (often at convenience stores) with pumps and basic repair kits. Souyo Camp is a small shop and cafe at the southern end of the peninsula which sells inner tubes and puncture repair kits.
UFO Line (Chōdō Kamega-mori Line) - stunning 27 km road in the mountains south of the Shimanami Kaido (Keren has details)
Bike Tour Japan Blog - BTJ is a commercial cycle tour guide company, but they have an excellent blog about cycle riding in Japan.
Hotels - a list of hotels which are welcoming to cyclists and offer safe indoor storage of bikes
Cafes - cycle cafes and bike-friendly coffee shops
Forest Bike - a mountain bike park near Odawara; a good place for beginners to learn MTB skills in a safe environment
Race Entry Websites
Spoen Cycle Events - all types of bike races and events are listed, including time trials, criteriums, and hill climbs.
Cycle Sports - website with links to cycle races and events
Races
Off-Road Cycling: TnT now has a page dedicated to everything off-road, including off-road triathlon, MTB, gravel, cyclocross, and gran fondo
Mt. Fuji Hill Climb - classic race up Mt. Fuji held early June; several thousand competitors climb 1255 m over 24 km
Hakone Hill Climb - an excellent and challenging hill climb starting in Odawara. The race follows the Hakone Turnpike for 13.4 km and climbs 1000 metres
Japan Cycling Federation - the JCF has event calendars for the races it governs, including road, MTB, and cyclocross.
Tour de Yatsu-ga-dake (第35回ツール・ド・八ヶ岳) TBD - another epic hill climb with 1300 m of climbing over 25 km
Norikura Hill Climb - up the highest paved road in Japan (2720 metres)
Niseko Classic (June 10-12, 2022) - 70 & 140 km road races and time trial, all in age groups.
Tour de Nikko (early Sept) - various options, including 100 km mountain challenge.
Tour de Okinawa (autumn) - various road races, including 210 km citiizen race. Reported to be the best amateur road race in Japan. Video here.
Services & Gear
USED
Biciamore - used cycles and parts; they have a well-organised online store with road bikes, parts, and clothing. There are also physical stores all over Japan, including in Tokyo (Minami Azabu, Kanda) and Yokohama.
Buychari (バイチャリ ) - used cycles and parts; they have a Yahoo online store and a chain of shops; Yokohama Totsuka shop staff are very knowledgeable and helpful.
Cycle Paradise (サイクルパラダイス) - used cycle store; has a warehouse in Edogawa, Tokyo and a Yahoo online store
Cycly (サイクリー) - online cycle store selling used bikes and parts; store in Fujisawa
Road Bike Kawmann - used road bike store in Fujisawa
Tokyo Cycling Club - has a "Classifieds" section on their forum
CYCLING (Japan) - Sell, Buy, Swap - Facebook group for people wanting to do just that; you need to apply for membership)
Valley Bikes - Japanese site for used bikes (in Japanese)
Crown Gears - new and used bikes and components; their shop is in Shibuya, and they have a good online store. The menu categories are easy to use, and the best of all there is a choice of new or used for each category. The site is in Japanese, but it has an English button for machine translation of the whole website.
GEAR & TECH
Quintana Roo V-PR Review - Slowtwitch review of QR's new tri bike, the V-PR; includes detailed information about bike fit
Helmet ratings - independent helmet ratings from Virginia Tech. Lazer helmets are rated most highly. MIPS technology works!
Switch Aero System - quick release clip-on aero bars for road bikes; they let you easily attach and remove the aero bars
Di2 Guides - this website is dedicated to helping you get the best out of Di2 gear systems.
Roadbike Channel - YouTube channel showing "dream builds" of pro bikes, including Kristen Blumenfelt's Cadex sub-7 bike.
SALES, RENTALS, BIKE FITS & SERVICES
Bike fits are also available from our friends at Tokyo Physio whose approach combines human biomechanics and cycling biomechanics.
GS Astuto - Tim Smith supplies wheels, frames, bike rentals , and more. Astuto Shuku is a rider's house in Gumma which has simple accommodation for cyclists.
Alpha - cycle store in Higashi Kitazawa run by Taku Sekine who is fluent in English. Taku rents gear, including hard cases, and does repairs
Road Bike Rental Japan - English-language company based in Osaka and Kyoto, but able to delivery nationally
CycleTrip BASE Akihabara - bike rental, including some high-end road bikes
Grove Kamakura - cycle store near Kamakura station which has reasonably priced rental of Specialized and Cannondale road and mountain bikes
S'fida - cycle store in Hasuda, Saitama Prefecture; one of only three stores in Japan using the Selle Italia ID Match bike fitting system. You can get a bike fit before ordering a bike, and the system will tell you which bike size to buy.
Zwift Bike Rental Store - you can rent a smart bike at this facility in Shiba-koen for just 1,500 yen per hour.
Various
Bicycle Insurance - Keren explains the importance of bicycle accident in this forum post. Third party liability insurance is recommended for all TnT members. It is now becoming mandatory in some places. Here is a detailed review (in Japanese) bicycle insurance in Japan; the top 10 are ranked.
Bicycle couriers - information on delivery services within Japan
Flying with Bikes - a summary of the rules for various airlines, bike cases, CO2 cartiridges, etc.
Steephill - pro cycling news, reports and links to race videos
Everesting Hall of Frame - fancy a challenge? "Everesting" means cycling (or running) the height of Everest in one activity.
Home Repairs - Park Tools has an excellent database of step-by-step instructions on how to fix your bike (including YouTube videos).
Japan Eco Track - downloadable cycle route maps for various regions of Japan (both English and Japanese), together with sightseeing information, etc.
Bike packer hostels in Japan - Google map showing hostels and cheap accommodation for cycle touring in Japan
Data, Apps, etc
Aerocoach - aerodynamic testing of riding positions, water bottles, etc.
The Win Tunnel - series of short videos by Specialized testing bikes and gear in their wind tunnel
SRAM Tire Pressure Guide - many triathletes probably pump their tyres up too hard. Don't decide tyre pressure by the numbers on the sidewall of tyres (they are only maximum SAFE pressure, not optimum pressure); use this gauge to find the optimum pressure which balances speed with handling and puncture resistance. It is worth cross-referencing with other calculators, such as the Silca Professional Pressure Calculator.
Chain length calculator - shows the correct chain length for your bike set up
Inner Rim Width Chart - shows range of tyre widths suitable for different rim widths
CO2 Cartridge Inflator Chart - shows inflation pressures of various tyre sizes for 16g and 20g cartridges
Fit Calculator - dial in your measurements and get suggested frame dimensions
Gear Calculator - allows you to compare gear ratios for different chainrings, cassettes, and wheels/tyres
Bike Geometry - this app helps you compare the geometry of any bike with other bikes. You can search for old bikes, which means you can compare the geometry of your current bike with another you are planning to buy.
Cyclingapps.net - a range of apps for mobile devices and web based, including tyre pressure calculator
Merge Activities - combine Garmin GPX data from multiple sessions into one. For example, you can combine several days of a cycle tour and make one map of the route.