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Wahoo took nearly 10 years to respond to Garmin’s Varia radars, but they’ve finally released their own—the TRACKR radar. I purchased it with my own money and was the first person in the Czech Republic to test it. In this review, I compare it directly with the Varia and other popular cycling radars to highlight its strengths and weaknesses and help you decide if it’s worth it.
KEY TAKEAWAY
After testing the Wahoo TRACKR Radar for a few weeks, I found that it almost never produces false positives. It’s as accurate and reliable as the Garmin Varia RTL515. After testing several poor radars, it’s very refreshing to finally have one that works as it should. The main disappointment is the battery life, which in flash mode did not even reach half of the claimed battery life. The mount doesn’t slip, but it creates another problem. Continue reading for more details, or buy Wahoo TRACKR Radar here.
My TRACKR rating at a glance:
Reliability 5/5 | Multi-object Detection 5/5 | Battery Life 2/5 | Brightness 4/5 | Side Visibility 2/5 | Mount 4/5 | App 3/5 | Price 3/5 | WEIGHTED OVERALL SCORE 3.7/5
More about this cycling radar scoring.
NOTE: I tested this radar with firmware v1.0.39.
Wahoo TRACKR Radar Summary
Below is the summary of the Wahoo TRACKR Radar technical specifications.
Wahoo TRACKR Radar Technical Specifications
- Dimensions: 90×82×42 mm
- Weight: 99g
- Claimed battery life: up to 20 hours (low flash)
- Real battery life: 8.5 hours in flash mode (4% battery left)
- Charging: USB-C
- Radar: Yes
- Taillight: Yes
- Brake sensing: Yes
- Auto standby: Yes
- Lumens: up to 53
- Water resistance: IPX7
- Detecting distance: 150m
- Detecting speed: n/a
- Viewing angle: n/a
- Horizontal angle: 35°
- Protocols: ANT+, Bluetooth
My Experience with Wahoo TRACKR Radar
Based on my testing, I found the following pros and cons of the TRACKR.
TRACKR Radar Pros
- Almost no false positives after dozens of hours of testing
- Stable mount
- Auto sleep feature
- Changes the light pattern during the entire overtaking period
- Brake sensing feature
- USB-C charging port
TRACKR Radar Cons
- Doesn’t improve side visibility
- Wahoo TRACKR mount socket is not compatible with 3rd party mounts
- Average brightness
- The app can’t replace a bike computer by displaying cars
- Below-average battery life
- No battery life indicator
- Light modes are not customizable
- Saddle mount and safety tether are not included
Also available at rei.com
The package includes three mount adapters (flat, aero, and d-shape) and also two rubber straps of different lengths. I use the aero adaptor with the shorter strap, and it works well with my seat post.
I first tested the TRACKR with the Wahoo ELEMNT BOLT 3. I also paired my Garmin Varia RTL515 with a Garmin Edge 840 for side-by-side comparisons. TRACKR has a 10m longer detection distance, so in theory, it should detect cars faster. In practice, they detected them at pretty much the same moment. Sometimes, though, the Varia detected the car about 1 to 2 seconds faster.
The TRACKR also performed well in detecting multiple cars at once. It tracked them accurately, especially in bends when multiple cars were following me, and the radar could “see” them (unlike when cars are driving behind each other). I tried to replicate this by pointing the radar at a highway, but TRACKR couldn’t detect them, probably due to high speeds. I suspect that it has a lower detection speed than Varia.
The number of false positives was close to zero. During one full charge cycle, I observed about 2 or 3. This is so refreshing because radars, such as the Magicshine R300 or iGPSport SR30, give multiple false positives per hour. The Cycplus L7 I reviewed recently produced between 3 and 5 false positives per hour, depending on the area. For example, in urban areas, false positives are more frequent than in rural areas.
The battery is supposed to last up to 20 hours in the low flash mode. During the first round of testing, the radar lasted only 8.5 hours with 4% battery remaining. This fell far short of the claimed battery life. Because the results were so poor, I found them difficult to believe and decided to test again. During the second round, the TRACKR lasted about the same duration, not even achieving half of the declared battery life. This was a big disappointment, and I find it hard to believe the results are so poor.
On one occasion, I also experienced something strange. I tried to turn off the radar, but it kept turning back on, even after I pressed the power button for over 3 seconds. As a result, I had to perform a hard reset. Fortunately, I haven’t encountered a similar problem since then.
The Battery Extender Mode feature is pretty useful. It lowers the brightness of the LEDs when no cars are detected. But you must turn it on in the Wahoo app, so keep this in mind. It’s a shame that there is no way to adjust the auto-sleep feature. It would be helpful to set it to, for example, 5 minutes of inactivity, which would extend the battery life even further. TRACKR Radar also has no LED battery life indicator. So, you have to check the battery life in the app.
TRACKR’s brightness is average. The flash is brighter, so I prefer using it instead of solid mode. The following picture (credit to GP Lama for the idea) compares the Bryton Gardia R300L, Varia RTL515, and TRACKR Radar. It’s not as clear in the picture, but the Varia had the brightest and most focused light, while the TRACKR was the least bright.
I’m glad that the radar remembers the last used mode and changes the flashing pattern throughout the entire overtaking period. However, you must enable this feature in the app—it should be enabled by default! Of course, you can also control the TRACKR’s light modes from the head unit if it offers this functionality. Unfortunately, Wahoo (or any other bike computer) can’t wake up TRACKR from standby mode; they can only turn it off when you turn off the activity. This is disappointing, and I hope Wahoo will implement this in future firmware updates.
Unlike the Magene L508 or Cycplus L7, you can’t adjust light modes using the Wahoo app. I don’t mind, as the default modes are sufficient for me, but some tinkerers would appreciate this. Please also remember that the Wahoo app can’t replace a bike computer by displaying cars like some other radars (Varia, Gardia, etc.). It doesn’t have this functionality.
Another thing I want to discuss is the mount. While I’m not the biggest fan of its appearance (it is bulky), it works and doesn’t slip on the seatpost. This is mainly due to the rubber padding that allows you to tighten it. The radar stays in place even during intense sprinting or riding on cobblestones.
The box doesn’t include a solid mount for your saddle, unlike the Cycplus L7. Remember, though, that the Wahoo TRACKR Radar mount is incompatible with the Garmin quarter-turn mount. The Wahoo socket is 1mm wider than Varia’s, so it can’t be used with third-party mounts. I mean, come on. Why did you do that, Wahoo? Was this an attempt to lock people into your ecosystem? As shown in the following pictures, the Garmin Varia RTL515 fits into the TRACKR mount.
Wahoo TRACKR vs. Other Cycling Radars
The following table summarizes the technical specifications of the TRACKR and other popular cycling radars.
| Feature/Radar | Dimensions | Weight | Claimed battery life | Real battery life (day flash) | Charging port | Brake sensing | Auto stand-by | Customizable light modes | Light pattern change when overtaking | App can replace a bike computer | Lumens | Detecting distance | Relative detecting speed | Water resistance | Viewing angle | Horizontal detection angle | Protocols | Detecting frequency | Mount standard | More Info | Buy |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Varia RTL515 | 98.6×19.7×39.6 mm 3.9×0.8×1.6 in | 71g | 16h flash 22h radar only | 9.5¹ | MicroUSB | No | No | No | Yes | Yes | Up to 65 | Up to 140m | 10 to 160 km/h (6 to 99 mph) | IPX7 | 220° | 40° | Bluetooth, ANT+ | ~24 GHz | Garmin | RTL515 review | Check Price Check Price (rei.com) |
| Magene L508 | 94×25×38 mm 3.7×0.98×1.5 in | 65g | 15h flash 19h radar only | 7.3 | USB-C | Yes | Yes | Yes³ | Yes | No | Up to 40 | Up to 140m | 10 to 120 km/h (6 to 74 mph) | IPX7 | 220° | 40° | Bluetooth, ANT+ | 24.05 – 24.25 GHz | Garmin-like rotated 90° | L508 review | Check Price |
| Bryton Gardia R300L | 97×20.9×40 mm 3.82×0.82×1.57 in | 66g | 17h flash 24h radar only | 11.7² | USB-C | Yes | Yes | No | Yes | Yes | Up to 73 | Up to 190m | 10 to 120 km/h (6 to 74 mph) | IPX7 | 220° | 40° | Bluetooth, ANT+ | ~24 GHz | Garmin-like rotated 90° | R300 review | Check Price |
| iGPSport SRTL SR30 | 99×20.3×39.7 mm 3.9×0.79×1.56 in | 68.8g | 12h flash 20h radar only | 16.9 | USB-C | Yes | Yes | No | Yes (just for a few seconds) | Yes | Up to 65 | Up to 150m | 10 to 120 km/h (6 to 74 mph) | IPX7 | 220° | 40° | Bluetooth, ANT+ | ~24 GHz | Garmin-like rotated 90° | SR30 review | Not recommended |
| Trek CarBack | 70×30×50 mm 2.76×1.18×1.97 in | 70g | 12h flash | 11.3 | USB-C | No | n/a | No | No | Yes | Up to 90 | Up to 230m⁴ | n/a | IPX7 | n/a | n/a | Bluetooth, ANT+ | ~77 GHz | Proprietary | CarBack review | Check Price Check Price (trekbikes.com) |
| Magicshine R300 | 96×29×34 mm 3.78×1.14×1.34 in | 110g | 16.2h flash 26.3h radar only | 9.4 | USB-C | No | Yes | No | Yes | No | Up to 300 | Up to 140m | 10 to 160 km/h (6 to 99 mph) | IPX6 | 270° | 35° | Bluetooth, ANT+ | 24 – 24.25GHz | Proprietary | R300 review | Not recommended |
| Cycplus L7 | 76.5×25×37 mm 3×0.98×1.46 in | 67g | 25h flash 36h radar only | 15.3 | USB-C | Yes | Yes | No | Yes | No | Up to 40 | Up to 160m | 6 to 160 km/h (3 to 99 mph) | IPX6 | 270° | 40° | Bluetooth, ANT+ | n/a | Garmin | L7 review | Not recommended |
| Wahoo TRACKR | 77×19×37 mm 3.03×0.75×1.46 in | 99g | 15h high flash 36h radar only | 8.5 | USB-C | Yes | Yes | No | Yes | No | Up to 53 | Up to 150m | n/a | IPX7 | n/a | 35° | Bluetooth, ANT+ | ~24 GHz | Garmin⁵ | TRACKR Radar review | Check Price |
| iGPSport SR mini | 77×37×19 mm 3.03×1.46×0.75 in | 50g | 7h day flash 25 radar only | 8.6 | USB-C | Yes | Yes | Yes | Yes | Yes | Up to 30 | Up to 160m | 4 to 110 km/h (2 to 68 mph) | IPX7 | 220° | 45° | Bluetooth, ANT+ | n/a | Garmin-like rotated 90° | SR mini review | Check Price |
| Coospo TR70 | 96×23×39 mm 3.78×0.91×1.54 in | 65g | 30h flash 40h radar only | 19.5 | USB-C | Yes | Yes | Yes | Yes | Yes | Up to 70 | Up to 140m | 6 to 128 km/h (3 to 79 mph) | IP67 | 220° | 40° | Bluetooth, ANT+ | n/a | Garmin-like rotated 90° | Coospo TR70 review | Not recommended |
| Sigma RECO 81 | 98.6×19.7×39.5 mm 3.88×0.78×1.56 in | 62g | 21h flash 30h radar only | 14.5 | USB-C | Yes | Yes | Yes | Yes | Yes | n/a | Up to 160m | 5 to 165 km/h (3 to 102 mph) | IP67 | 220° | 60° | Bluetooth, ANT+ | n/a | Garmin | Sigma RECO 81 review | Check Price |
| Garmin RearVue 820 | 98.9×25.9×43.2 mm 3.9×1.0×1.7in | 90g | 24h flash 30h radar only | 18 | USB-C | Yes | Yes | Yes | Yes | Yes | Up to 100 | Up to 170m | n/a | IPX7 | 220° | 60° | Bluetooth, ANT+ | n/a | Garmin | RearVue 820 review | Check Price |
¹About two years old unit. The battery depreciation probably influenced the battery life.
²Demo unit – I am not sure if this influenced the battery life.
³Paid subscription or free for email subscription.
⁴The real detecting distance is around 150m, which means more or less the same as other radars.
⁵TRACKR Radar won’t fit Garmin mounts due to wider socket.
Updated: March 6, 2026
Things to Consider Before Buying a Bicycle Radar
Cycling radars have to be highly reliable. They may give you false positives, but they should never give you false negatives, meaning they never miss a car.
You should have zero tolerance for false negatives if you buy a device like a cycling radar. However, you shouldn’t rely entirely on a bicycle radar and use your other senses while riding.
Based on my testing, the TRACKR proved reliable in terms of its technical specifications. It detected cars about as quickly as Varia and didn’t miss any cars. The number of false positives was nearly zero.
My Verdict
It’s great to finally see an equal competitor to Varia RTL515. Yes, it took several years for the competitors to catch up, but we’ll only benefit from this. If I had to choose between Varia and TRACKR, I would probably buy TRACKR. It has a USB-C charging port, and its mount holds the radar in place. It’s just a shame that 3rd-party Garmin mounts are not compatible with TRACKR because of the wider mount socket.
However, I’m looking forward to the upcoming Varia model that the entire cycling community is expecting soon. But the truth is, we expected its release two years ago, and the new Varia is nowhere to be found.
Wahoo TRACKR Radar proved reliable, with almost no false positives, and it performs well in other areas (brightness, mount, etc.). It’s not perfect (it doesn’t allow you to adjust the light modes and doesn’t have an auto-sleep feature), but it’s worth it.
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Also available at rei.com
