Road cycling GPS for the long day out
On the road the questions are weight, battery and directions you can trust on roads you have never ridden. A bike computer should give you all three without the phone in your jersey pocket running flat before the café stop.
What road cycling asks of a GPS
- Grams on the bars
- Road riders count weight. The Roc is 120 g, the lightest unit in the range.
- A battery for the whole ride
- Take your longest ride and add a margin for the day that runs late. The manufacturer lists 18 hours for the Roc and 20 hours for the Cross Plus.
- Directions on unfamiliar roads
- A line on a map is not enough at a fast junction. The Roc turns a track into a roadbook, adding directions and alerts so the next turn is announced before you reach it.
- Your data and your sensors
- The Roc shows more than 200 real-time data fields. Heart-rate, cadence and power sensors pair over Bluetooth or ANT+; the Cross Plus lists ANT+, and the Roc lists dual Bluetooth.
Our pick: TwoNav Roc
The Roc keeps the bars light at 120 g, lists 18 hours of battery and builds roadbooks with turn directions and alerts from a track.
| Specification | RocOur pick | Cross Plus |
|---|---|---|
| Made for | Cycling | Hiking and cycling |
| Screen | 2.7" | 3.2" |
| Resolution | 240 x 320 | 480 x 800 |
| Weight | 120 g | 172 g |
| Size | 58 x 90 x 20 mm | 63 x 110 x 21 mm |
| Battery life | 18 h | 20 h |
| Battery | Built in | Built in, 3300 mAh |
| Storage | 32 GB | 32 or 64 GB + card |
| Satellites | GPS, Galileo, Glonass, BeiDou | GPS, Galileo, Glonass, BeiDou |
| Wireless | Dual Bluetooth, Wi-Fi | Bluetooth, Wi-Fi, ANT+ |
| Water and dust | — | IP67 |
| Controls | 6 buttons | Touch, buttons, joystick |
Or the Cross Plus. Choose the Cross Plus if your sensors are ANT+ or your rides run past 18 hours. It lists 20 hours, charges over USB-C and is IP67 rated. See the Cross Plus
Figures are the manufacturer's. The full four-way comparison is on the cycling GPS page.
Questions riders ask
ASPL is the authorised distributor for TwoNav in India and services the devices in its own service centre. Ask us anything the answers here leave open.
Will my power meter and heart-rate strap pair?
It depends on how they transmit. The Cross Plus lists ANT+ and Bluetooth; the Roc lists dual Bluetooth. Send us the sensor models and we will confirm before you order.
Does it give turn-by-turn directions?
The Roc turns a track into a digital roadbook with directions and alerts, so it warns you of the next turn rather than only drawing the line.
What if my ride is longer than the battery?
The Cross Plus lists 20 hours and charges over USB-C. For rides measured in days, the Aventura 2 Plus lists 36 hours on a removable 6000 mAh battery.
Read before you ride
- How to make a cycling GPS battery last the whole rideRated battery life is measured under set conditions. Your ride is not those conditions. Here is what drains a bike GPS, and what to change.
- How to choose a cycling GPS in IndiaBattery life, maps that work without signal, a screen you can read at noon, the sensors you already own, and who repairs it. Six checks before you buy a bike GPS.
- Bike GPS or phone: what changes when you navigate a rideFor a short ride on roads you know, the phone is fine. Here is where it stops being fine, and what a dedicated bike GPS does differently.