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BC900 cycling GPS
  • BC900 cycling GPS
  • BC900 cycling GPS
  • BC900 cycling GPS
  • BC900 cycling GPS
  • BC900 cycling GPS
  • BC900 cycling GPS
  • BC900 cycling GPS
  • BC900 cycling GPS
  • BC900 cycling GPS
BC900 cycling GPS



BC900 cycling GPS

3 reviews
1 of 3 people recommends this product
  • BC900 cycling GPS
  • BC900 cycling GPS
  • BC900 cycling GPS
  • BC900 cycling GPS
  • BC900 cycling GPS
  • BC900 cycling GPS
  • BC900 cycling GPS
  • BC900 cycling GPS
  • BC900 cycling GPS
BC900 cycling GPS
Not available online

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Designed for cyclists who want to measure their performance, save their GPS track, and share it on their favourite mobile app.


Parameter measurement

Speed, distance, altitude, GPS.Compatible:Heart rate, cadence, power track.


Sync your sessions to your smartphone via Bluetooth.


Compatible with ANT+ and Bluetooth heart rate, cadence, speed, and power sensors

Easy to assemble/disassemble

Easy to mount on its bracket.

Easy to read

Large screen with good contrast. Customizable values (1 to 5 per view).

Battery life

12 hours of battery life in GPS mode. Charge the battery with a USB cable.


Indoor mode (without GPS) for turbo trainer use. (requires ANT+/Bluetooth)


IPX7 (1 ATM) protection from rain and snow.


Speed and distance functions

Current speed
Average speed
Maximum speed
Partial distance (ride distance)

Time function

Stopwatch (automatic or manual start/stop)

Altitude functions

Current altitude
Elevation gain
Elevation loss

Other functions

Calories burned
Backlit screen (for night use)
Automatic start/stop
Multilingual menu (10 languages): English, French, Spanish, German, Italian, Dutch, Portuguese, Polish, Russian, Hungarian.

Heart rate functions (if connected to a heart rate belt [sold separately])

Current heart rate
Average and maximum heart rate
You have the option to set a target heart rate zone in BPM (beats per minute), % HR (% of max heart rate) or % HRR (Heart Rate Reserve, the difference between your maximum heart rate and resting heart rate). The HRR is used by the Karvonen formula to calculate your training heart rate based on the target intensity.

Cadence functions (if connected to the cadence or power sensor [sold separately])

Current cadence
Average cadence
Target cadence zone

Power functions (if connected to the power sensor [sold separately])

Current power
Average power over 10 seconds
Average power for the ride
You have the option to set a target zone in Watts or in % FTP.
FTP (Functional Threshold Power) is the maximum power you can maintain for 60 minutes.

Laps (split times)

Manual or automatic laps.
For each lap, the following values are available: time, distance, average speed, average heart rate, average cadence, average power, elevation.
Laps are also synced to the Decathlon Connect app so you can analyze them on your phone.

New Decathlon Connect app

Transfer data from your BC900 via Bluetooth Smart technology and view your sessions immediately on your smartphone with the Decathlon Connect app (available on iOS and Android).
- Analyze your sessions: maps, speed curve, pace, heart rate, power, altitude, pedalling analysis...
- Statistics help you appreciate your progress
The data is also visible for PC and Mac at decathloncoach.com. (.gpx file export possible)

Compatible with Strava and other third-party apps.

Do you want to transfer your sessions to other apps and view your workout history? The Decathlon Connect app is compatible with Strava, Garmin Connect, Fitbit, Apple Health, and Polar Flow. You can connect your favourite service to your cyclometer in an instant.

Mount your cyclometer on your Triban or Van Rysel bike!

The BC900 cyclometer is compatible with the "Dashboard System" which can be found on certain Triban and Van Rysel road bikes. Thanks to this technology, you can mount the cyclometer straight onto your bike's stem. (available beginning September 2020)


We know that your personal records are precious. This is why the BC900 automatically detects your records and stores them in its memory. Whenever you beat a record, your cyclometer will congratulate you.


Length: 78 mm
Width: 44 mm
Height: 14 mm
Screen: 38 mm x 31 mm

Customize your activity screens

You can customize each activity screen (the pages on the cyclometer that you see when riding). For each page, you can choose:
- the number of fields (values): between 1 and 5 (the size adjusts automatically so if you want bigger numbers, limit the values per page)
- the type of value for each field
- the number of pages (up to 9)
These settings can be adjusted on the cyclometer or even more easily on the Decathlon Connect app.

Need more details or help?

Consult our support page:  

Indoor use (turbo trainer)

Want to use your cyclometer during indoor turbo trainer sessions as well?
The cyclometer has an "indoor" function that lets you use it without GPS. You will of course need sensors to give you your speed, cadence, heart rate or power data. (sold separately)

Does the BC900 cyclometer provide navigation functions?

No, the cyclometer only records your GPS track for you to view on a smartphone after syncing. The cyclometer has no navigation function.

Pack contents.

BC900 GPS Cyclometer
Bracket for mounting it on 35 mm, 31.8 mm or 25.4 mm handlebars (rubber ring adaptors included)
USB charging cable


BC900 = 46 g
Arm = 27 g


2.7/5 3 reviews
1 of 3 people recommends this product
Good but not great
Darren (United Kingdom) Used for 4 to 6 months
- easy to setup and use
- easy to read
- auto pause is very quick
- app has a nice interface

- extremely slow to sync
- technical support very poor

More on sync, I have my Decathlon Connect app also connected to my Fitbit and Strava. At first it synced to Strava with no issues then after a Strava update it refused to. I finally figured out, with no help from support, that the issue was I needed to sync with my Fitbit first then open the Decathlon Connect app, sync my ride and then it would upload it to Strava.
Syncing your ride with the app is painfully slow, so much so I find my phone locks and I have to start all over again. Sort this out please!
not worth it
Maxime (United Kingdom) Used for 8 to 12 months
Bought few months ago and used it >10times, or tried to use it, but:
- battery is unreliable > just today again, i started my ride with 66% and 5 minutes in the ride the battery goes down to 11% and runs out before i finish my ride (luckily i also tracked the ride on my garmin watch as a backup).
- sync with the phone app is unreliable, almost after every ride i've lost hours trying to synchronise a ride to see data on strava. No access to the data by USB, only wireless through the app, which make it a nightmare as the app isn't good.
VAN RYSEL GPS Bike Computer 900 GPS Bike Computer
James (United Kingdom) Used for 3 to 8 weeks
The good:
Had no issues connecting my ANT+ sensors
It's easy to configure the screens on the unit using the app.
Battery life is excellent

The bad:
The computer will occasisonally run into GPS issues which result in the file becoming corrupted. If this happens there is no way to actually get to the file as it will not upload to Decathlon Coach. This results in the ride being lost.

I have had issues with rides syncing to Decathlon Connect. I haven't lost any rides this way but it has frequently taken multiple attempts at syncing, often not doing so until a following day. There is no way of getting files directly off the unit e.g. using a USB cable

The temperature shows is approximately 5C too high. Not a big deal for me personally.

Most inexplicably the computer doesn't track time accurately! It will be 1-2 minutes short over an hor. It's easy to test by turning auto pause off, leaving the unit to run for an hour and comparing against a reliable source. Or by exporting your ride as a .gpx file and then reimporting into whatever tracking site or software you use.

I bought this unit as a backup device for when I was did an Everesting, so it was running alongside a unit that I know produces verifiable data.
I can't recommend this computer for serious regular use, there are too many points in the recording and transfer process where it fails in addition to the data it collects being inaccurate.
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