Capable outdoor smartwatch, incremental upgrade
Image: official product image from apple.com
Is the Apple Watch Ultra 3 good for ultrarunning?
Mostly. The Apple Watch Ultra 3 offers accurate GPS, responsive heart-rate tracking and satellite safety features, making it a capable option for iPhone users tackling long runs. Its rated 42-hour battery life is an improvement, but regular charging, 61.8g weight and satellite limitations make it less suited to remote, multi-day ultras.
Key facts
| Category | GPS watches |
|---|---|
| Release | Announced 9 September 2025; on sale 19 September 2025 |
| Price | £749; $799 in US sources |
| Key specs |
|
| Best for | iPhone users seeking a rugged sports smartwatch with satellite safety features, especially first-time Ultra buyers who accept its size and charging routine. |
| Consensus score | 8.0 out of 10 |
What changed on the Ultra 3?
The Apple Watch Ultra 3 is a 49mm titanium smartwatch with dual-frequency GPS, 5G and satellite messaging, location sharing and emergency SOS. Its always-on display reaches 3,000 nits, and Apple rates battery life at up to 42 hours, or 72 hours in low-power mode. The Telegraph gives its weight as 61.8g. Reviewers describe it as a capable but incremental update, with a brighter display and longer battery life than the Ultra 2. It costs £749 in the UK.
How does it perform on ultras?
Reviews from outlets including Women’s Running, PCMag and The Verge praise the Apple Watch Ultra 3’s GPS performance, heart-rate tracking and readable display. Those are useful strengths on long training runs and races. Battery life is the key compromise: Apple’s estimate is up to 42 hours, while some reviewers report around 60 to 70 hours in their own use. GPS workouts can mean more frequent charging. Satellite tools add reassurance off-grid, but their usefulness depends on conditions and they do not replace a specialist communicator.
Who should buy the Apple Watch Ultra 3?
It suits iPhone users who want a rugged sports watch with health and lifestyle features, accurate tracking and satellite safety options. First-time Ultra buyers who accept a large, 61.8g watch and a regular charging routine are the clearest fit. Offline maps may also appeal on longer outings. For remote, multi-day routes, its battery and satellite limitations deserve careful thought. At £749, it is a costly choice, and reviewers see little reason for most Ultra 2 owners to upgrade.
What reviewers agree on
Strengths
- Accurate GPS and responsive heart-rate tracking
- Bright, readable display
- Longer battery life than the Ultra 2
- Satellite messaging, location sharing and emergency SOS
- Rugged design with extensive health and lifestyle features
Weaknesses
- Large and weighty for some runners
- Expensive
- Battery still requires regular charging
- Satellite features have limited usefulness in some conditions
- Incremental upgrade with little reason for most Ultra 2 owners to switch
Frequently asked questions
How does the Apple Watch Ultra 3 fit for running?
It has a 49mm titanium case, so it is a large watch and may feel bulky on smaller wrists. The Telegraph lists its weight as 61.8g. The supplied review data does not give sizing or strap-fit guidance, so try it on if you are concerned about comfort over long runs.
How long does the Apple Watch Ultra 3 battery last?
Apple estimates up to 42 hours of battery life, rising to 72 hours in low-power mode. Some reviewers report around 60 to 70 hours in their own use, but GPS workouts can increase charging needs. Apple says quick charging reaches around 80% in 45 minutes.
Should I upgrade from Apple Watch Ultra 2?
For most Ultra 2 owners, reviewers consider the Ultra 3 an incremental update rather than a compelling upgrade. It adds longer rated battery life, satellite features, 5G and a brighter display. If those additions matter to your running or safety needs, they may be worthwhile; otherwise, keeping the Ultra 2 is reasonable.
Sources behind this review
How this review works: the consensus score of 8.0 out of 10 condenses the verdicts of the independent reviews and lab tests listed above, compiled by endurance coach Paul Forrest. Prices and specifications are those quoted by reviewers at the time of testing and may have changed.
Training for an ultra? See endurance coaching with Paul Forrest.
