Name: Garmin Varia RearVue 820 Cycling Radar with Trail Rear Light
Brand: Garmin
SKU: cb3fefcb-3354-4ac7-8e89-aba41a146bdf
Availability: InStock

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Description

Strikingly Visible. Remarkably Powerful.Tracks Vehicles Up To 175 Metres Away With Wider Field Of ViewGet up to 24 hours of battery life in day flash modeBright tail light is visible up to 2 km (1.24 miles) awaySee the size of approaching vehiclesBrake light alerts others that you’re slowing or stoppingStay alert to vehicles traveling at the same speedPowerful and Reliable Radar.With our most powerful and precise radar tracking technology, Varia RearVue 820 bike radar detects vehicles approaching from up to 175 metres away with a wider field of view.Bright Tail Light and Brake Light.Our brightest tail light means you’ll be visible from up to 2 km (1.24 miles) away. A brake light detects when you’re slowing or stopping and displays a unique flash pattern.Advanced Vehicle Tracking.See alerts for small, medium and large vehicles, and see when a vehicle changes lanes, along with its threat level — when riding with the latest compatible Edge® bike computers or the Varia™ app on your smartphone.Get Alerts Your Way.For visual and audible alerts while you ride, connect this bike radar to the Varia smartphone app, compatible Edge bike computers or Garmin smartwatches. In addition to haptic alerts on your wrist, selected Garmin smartwatches can also give voice alerts for approaching vehicles — this feature is currently available in the Garmin Public Beta programme for selected smartwatches.Variety Of Light Pattern Options.Ride with four different light patterns: day flash, night flash, solid mode and peloton mode, which helps preserve the eyes of riders behind you. Create your own custom light patterns in the Varia app on your smartphone.Compact Design.A sleek, compact design and new seatpost mount means Varia RearVue 820 fits cleanly onto almost any road or gravel bike and is compatible with the Varia seat rail mount kit (sold separately).Varia APP.Pair your Varia rearview radar with this app to get visual alerts for vehicles approaching from behind – right from your smartphone. When your phone is out of sight, stay notified with tone and vibration alerts. The app can be used alone, or alongside your compatible Garmin device or head unit to provide additional awareness. Plus, when paired compatible Varia devices, you can review and store video footage, adjust camera and light settings, or customise light patterns.Specification:General:Dimension: 98.9 x 25.9 x 43.2 mm (3.9” x 1” x 1.7")Weight: 90 g (3.2 oz)Light modes: Solid, peloton, night flash, day flashCustom light mode configuration: Yes (with Varia Mobile App)Radar-only mode: YesLumens: 25 solid, 8 peloton, 40 night flash, 100 day flashWater rating: IPX7Battery life:10 hours solid15 hours peloton10 hours night flash24 hours day flash30 hours radar-onlyANT+: Yes (radar, bike lights)BLE: Yes (radar, bike lights)Viewing angle: 220°Visibility distance: 2 kmRear tail light: YesBrake light: YesRear radar: YesLateral vehicle positioning: YesVehicle size classification: YesVehicle threat classification: Speed-, size- and lateral range-basedMaximum vehicle detection range: 175 mRadar beam width: 60°Connectivity:Varia™ app compatibility: YesIn The Box:Varia™ RearVue 820 radar tail lightMounting kitCharging cableDocumentation

Full specifications

Marque	Garmin
Référence fabricant	0100318000
Specification	General:Dimension: 98.9 x 25.9 x 43.2 mm (3.9&rdquo
Poids	90 g (3.2 oz)Light modes: Solid
Custom Light Mode Configuration	Yes (with Varia Mobile App)Radar-only mode: YesLumens: 25 solid
Day FlashWater Rating	IPX7Battery life:10 hours solid15 hours peloton10 hours night flash24 hours day
BLE	Yes (radar
Viewing Angle	220&deg

Overview of the Garmin Varia RearVue 820 Cycling Radar with Trail Rear Light

The Garmin Varia RearVue 820 Cycling Radar with Trail Rear Light is a well-regarded reference in the Luminaires category. In 2026, it remains one of the most relevant choices for those seeking to balance quality and budget. The brand Garmin has a strong reputation among consumers, reflected in its consistent availability across many partner retailers. Thanks to our comparison tool, you can see all available offers at a glance and go directly to the retailer of your choice to complete your purchase with confidence.

What makes the Garmin Varia RearVue 820 Cycling Radar with Trail Rear Light stand out in 2026

This product stands out for the build quality that is characteristic of the Garmin brand. Users particularly appreciate its reliability in daily use and how easy it is to get started right from the first use. The design, intended for regular use, ensures satisfying durability, and the balance between the features offered and the asking price is well received by buyers. Garmin has a strong reputation in the Luminaires category, which makes it easy to access after-sales service and the manufacturer warranty when needed. You can also compare with the Garmin Varia Radar Seat Post Quarter-Turn Clamp Mount to refine your choice.

Performance and key features

In the Luminaires category, buyers pay close attention to declared performance and build quality. The Garmin Varia RearVue 820 Cycling Radar with Trail Rear Light meets these expectations with technical specifications that reflect Garmin's positioning on this segment. The key features, available in the spec sheet on this page, allow you to verify this product matches your needs before finalising your purchase. Also compare with the Garmin Varia Radar Seat Post Quarter-Turn Clamp Mount from the same brand to refine your decision.

Design and ease of use

The Garmin Varia RearVue 820 Cycling Radar with Trail Rear Light is generally described as intuitive by users in the Luminaires category. Garmin designed this product to be accessible from the first use, whether you are a beginner or an experienced user in this range.

Market price ranges in 2026

Range	Indicative price	For whom	What you get
Entry-level	Under 2240 £	Tight budget, occasional use	Essential features, reliable for beginners
Mid-range	2240 £ to 5230 £	Regular daily use	Good value for money, solid performance
High-end	Over 5230 £	Demanding users	The best of the category, all advanced features

To find the Garmin Varia RearVue 820 Cycling Radar with Trail Rear Light at the best price today, compare all available offers on Compiral. Our comparison tool updates prices several times a day to ensure you get the lowest rate from our partner retailers. Remember to activate the free delivery filter to reduce the total cost of your purchase. Also check the estimated delivery time at each retailer, which can vary considerably from one shop to another.

Frequently asked questions about Garmin Varia RearVue 820 Cycling Radar with Trail Rear Light

Is the Garmin Varia RearVue 820 Cycling Radar with Trail Rear Light worth its price in 2026?

In 2026, the Garmin Varia RearVue 820 Cycling Radar with Trail Rear Light is listed from £259.99 at our partner retailers. This price is consistent with the positioning of Garmin in the Luminaires category. To judge whether this price is currently attractive, check the price history on our product page. Also compare the total price including delivery to avoid any surprises at checkout.

What warranty does the Garmin Varia RearVue 820 Cycling Radar with Trail Rear Light come with?

The Garmin Varia RearVue 820 Cycling Radar with Trail Rear Light generally comes with a manufacturer warranty of 1 to 2 years depending on the retailer. In addition to the commercial warranty from Garmin, statutory consumer rights apply to all purchases. Check the warranty conditions directly on the retailer's page before finalising your order.

Is the Garmin Varia RearVue 820 Cycling Radar with Trail Rear Light in stock?

Stock availability for the Garmin Varia RearVue 820 Cycling Radar with Trail Rear Light is updated in real time on Compiral. Retailers showing "In stock" can usually deliver quickly, often within 2 to 5 working days. If the product is temporarily out of stock at one retailer, check the other offers in our table. Check back regularly as stock levels change frequently in the Luminaires category.

Where can I buy the Garmin Varia RearVue 820 Cycling Radar with Trail Rear Light at the best price?

To buy the Garmin Varia RearVue 820 Cycling Radar with Trail Rear Light at the best price, compare all available offers in our table at the top of this page. The 1 offer listed include delivery costs to give you the true total cost. Sort by ascending price and filter by free delivery to quickly identify the best deal among our verified partner retailers.

How does the Garmin Varia RearVue 820 Cycling Radar with Trail Rear Light compare to competitors in the Luminaires category?

In the Luminaires category, the Garmin Varia RearVue 820 Cycling Radar with Trail Rear Light occupies a specific market segment. Compared to other available models, it stands out mainly through the balance between its features and its price. To compare objectively, consult the detailed spec sheet on this page and compare specifications with other similar products listed on our comparison tool.