Ultra Trail Sierra de Aracena 2027
Which GPS watch for Ultra Trail Sierra de Aracena
For Ultra Trail Sierra de Aracena, what really matters in a watch is that the battery lasts to the finish. We estimate a mid-pack runner's time and recommend the watch whose battery covers it with margin.
Our recommendation
Garmin
Garmin Forerunner 570
Running watch with AMOLED display, dual-frequency multi-band GPS, full-color topo maps and onboard music. 18 h in GPS mode (14 h multi-band) and up to 11 days in smartwatch mode, at 50 g. The first Forerunner with full navigation, sitting between the Forerunner 265 and the Forerunner 965.
Why this watch
Ultra Trail Sierra de Aracena is an ultra: you'll finish in around 14h 20min. Your watch must record at least 18 h of GPS without recharging. Prioritise battery life and, if needed, drop to standard GPS mode to reach the finish with charge to spare.
Other options to consider
Garmin
Garmin Forerunner 165
Entry-level running watch with a 1.2" AMOLED display, 19 h GPS battery and just 39 g. Training metrics, adaptive plans and accurate multi-GNSS GPS for training and racing marathons. Garmin's gateway watch for runners who don't need maps or multi-band.
Garmin
Garmin Forerunner 265
Running watch with AMOLED display, dual-frequency multi-band GPS and onboard music. 20 h in GPS mode (14 h multi-band) and 13 days in smartwatch mode, at 47 g. The perfect balance of accuracy, advanced metrics and price for training and racing from 10K to marathon.
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