What to Look For
GPS Accuracy
GPS accuracy varies significantly between watches. Garmin and Apple Watch Ultra lead the field. Budget devices often have 5-15% distance error that compounds on longer runs. If pace accuracy matters for training, it's worth paying for dual-band GPS (L1+L5).
Battery Life vs Feature Use
Manufacturer battery figures are measured with GPS off or minimal feature use. A watch claiming '7 days' typically gets 3-4 days with always-on display and heart rate tracking. GPS-on battery is the figure that matters for outdoor use.
Water Resistance Rating
5ATM (50m) is the minimum for swimming. 10ATM (100m) for serious water sports. WR50 or WR100 ratings are typical for sports watches. IP68 (dust/water) is not the same as ATM — IP68 doesn't guarantee swimming safety.
Health Tracking Accuracy
Heart rate, SpO2 and sleep tracking accuracy varies enormously. Chest strap HR monitors remain more accurate than wrist-based for intense exercise. Wrist HR is adequate for zones 1-3; unreliable for sprint intervals.
Ecosystem & App Integration
Consider where your data lives. Garmin Connect, Apple Health, Google Fit and Strava all work differently. Cross-device switching is difficult if you're locked into a proprietary ecosystem. Garmin integrates with Strava; Apple Watch requires iPhone.
Build Quality & Durability
Outdoor gear takes real abuse. Check MIL-STD-810 ratings for watches, seam-sealing on backpacks, and Gore-Tex vs proprietary waterproofing on clothing. Gore-Tex has 30 years of field-proven durability data; proprietary coatings often degrade within 2-3 years.
Understanding the Price Ranges
Budget tier. Basic GPS watches, entry running gear. Adequate for casual fitness tracking.
Mid-range sweet spot. Garmin Forerunner 265, Polar Pacer Pro. Proper training tools.
Premium tier. Garmin Fenix 7, Apple Watch Ultra. Expedition-grade tracking and durability.
Luxury tier. Top multisport computers, expedition watches with satellite messaging.
Our Top Recommendations
Garmin Forerunner 265 GPS Running Watch
AMOLED display, dual-band GPS, 13-day battery, HRV status. The serious runner's smart watch.
Garmin Fenix 7S Pro Solar GPS Watch
Solar charging, full topo maps, 37-day battery, titanium bezel. The expedition multisport standard.
Fitbit Charge 6 Fitness Tracker
Built-in GPS, 7-day battery, EDA stress sensor, ECG. The most complete slim fitness tracker.
Common Mistakes to Avoid
- Buying a watch with impressive features without checking battery life for YOUR specific use — a GPS watch that dies at mile 18 of a marathon is useless
- Confusing IP68 water resistance with swimming capability — IP ratings aren't tested under pressure like ATM ratings
- Assuming Apple Watch GPS accuracy matches Garmin — it doesn't for serious distance runners
- Buying a hydration pack with a chest fit rather than trying it on — fit variance between brands is enormous
- Ignoring the ecosystem lock-in — your 5 years of Garmin health data doesn't transfer to Apple Watch
Browse by What You Need
FAQ
Garmin vs Apple Watch for running — which is better?
Garmin wins for serious runners: superior GPS accuracy (especially dual-band L5), longer battery life, better training analytics and no iPhone dependency. Apple Watch Ultra is competitive at its price point and integrates better with iPhone, but the ecosystem lock-in and daily charging requirement make it less practical for longer outdoor activities.
Is a £500 running watch worth it over a £200 one?
Depends entirely on what you do. For 5K-half marathon runners who want accurate pace data: the £200 tier (Garmin Forerunner 265) is genuinely excellent. For marathon runners, trail runners and multisport athletes who need expedition battery life, full topo maps or ANT+ sensor integration, the premium tier justifies itself.
What's the best sports watch for beginners?
The Garmin Forerunner 165 (£200) for runners, or the Apple Watch Series 9 for iPhone users who want an all-rounder. Both provide accurate GPS, heart rate monitoring and structured workout guidance without overwhelming complexity.
Do fitness trackers actually improve fitness?
Research suggests yes — but primarily through habit formation and goal-setting, not because the hardware does anything special. The insight into sleep quality, HRV and recovery metrics genuinely helps athletes avoid overtraining. Whether a £30 tracker or a £600 watch delivers this depends on how seriously you engage with the data.