The Key Requirement: Battery Life
Community Watch Picks
Garmin Fenix 8
The Garmin Fenix series is by far the most commonly mentioned watch among Wall runners. Exceptional GPS accuracy, up to 29 days battery life (29 hours full GPS), full mapping, and solar charging options. Multiple Wall finishers specifically name their Fenix as their watch of choice for the event. The gold standard for ultra GPS watches.
Garmin Forerunner 955 Solar
Garmin's mid-range ultra option with up to 42 hours GPS battery — more than enough for The Wall, even without a Hexham charge. Lighter than the Fenix with full mapping and HR monitoring. A fantastic option if you don't need the Fenix's rugged military-grade build. Solar charging extends battery further in good conditions.
Coros Pace 3
Coros has become popular in the ultra community for exceptional battery life and lower price than Garmin. The Pace 3 offers 38 hours GPS battery. Mentioned by Wall community members as a solid Garmin alternative. Very lightweight (30g) and comfortable for long events. The Coros Vertix 2 offers up to 140 hours GPS if you want extreme endurance.
Suunto 9 Peak Pro
Suunto's ultra-endurance GPS watch. Excellent battery life (up to 300 hours in low-power GPS mode, 40 hours in full GPS), full mapping and HR tracking. Very lightweight and slim for a multi-day capable watch. A great choice for those who prefer the Suunto ecosystem or want the slimmest possible ultra watch.
Polar Grit X2 Pro
Polar's ultra outdoor GPS watch with up to 43 hours GPS battery. Solid HR accuracy and route navigation. Mentioned in ultra running communities as a well-built choice for long events. The Polar training load and recovery features can be useful in training leading up to The Wall.
Garmin Instinct 2X Solar
Garmin's rugged, budget-friendly ultra option with solar charging for potentially unlimited battery in good conditions. Up to 40 hours standard GPS. More durable than the Forerunner, significantly cheaper than the Fenix. Excellent choice for those who want Garmin reliability and a huge battery without the premium Fenix price tag.
What to Look For in a Wall Watch
Battery Life
The single most important spec. The race cut-off is 26 hours — you need at least 24 hours of GPS tracking, ideally 28+. Check the actual GPS tracking battery life (not general battery), as this is significantly lower than the standby time. If your watch can't last 26 hours, plan to charge it at Hexham.
Heart Rate Monitoring
Experienced Wall runners recommend pacing by heart rate rather than pace. A consistent, low heart rate is your friend over 70 miles. Make sure your watch has reliable wrist-based HR monitoring — and consider where the strap sits so it doesn't chafe over 20+ hours.
Route Navigation
You can pre-load The Wall's GPX route on most Garmin, Coros and Suunto watches. This means you can follow turn-by-turn navigation in the dark, rather than relying on signs (which can be missed when exhausted). Load the route before race day and test it.
Charging at Hexham
Multiple Wall runners mention charging their watch at Hexham using a power bank in their drop bag. If your watch battery is marginal, pack a power bank (already charged) and the watch charging cable. 15–20 minutes of charging at Hexham can add hours of battery life for the second half.