Buying guide
The Best Fitness Trackers for Running
Running comes down to accurate distance and trustworthy heart rate. The deciding factor is GPS: only some trackers have it built in, letting you run phone-free. Here's what to buy for how you run.
Take the quiz →What running actually demands from a tracker
For running, two things matter more than anything: accurate distance and pace, and heart rate you can trust. Distance means GPS — and here's the catch most buyers miss. Only some trackers have GPS built in; the rest borrow your phone's, which is just as accurate but means carrying your phone on every run. If you want to run phone-free, you need built-in GPS, and among fitness trackers that narrows the field fast.
Best for phone-free running (built-in GPS)
Amazfit Active 2 — the runner's value pick. Genuinely reliable built-in GPS with offline maps and turn-by-turn navigation, 160+ sport modes, and a 21-hour GPS battery — all for $99, no subscription. The standout for running on a budget.
Fitbit Charge 6 — built-in GPS, with a catch. It has onboard GPS and can broadcast heart rate to gym equipment, but reviewers find the GPS slow to lock and unreliable, so many runners fall back on connected GPS from their phone. Best if you also want ECG and Fitbit's ecosystem.
Good for running with your phone
If you'll carry your phone anyway, connected-GPS trackers work well and cost less. The Xiaomi Smart Band 10 and Samsung Galaxy Fit3 both log runs accurately using your phone's GPS. For recovery-focused runners, the WHOOP 5.0 worn on the bicep tracks heart rate close to a chest strap.
The heart-rate reality
Every wrist-optical sensor here can lag during hard intervals — that's a physical limitation, not a brand flaw. If you do serious interval or threshold work, pair any of these with a chest strap for the HR portion. For steady runs, the wrist data is fine.
Compare the two built-in-GPS options directly in our Fitbit Charge 6 vs Amazfit Active 2 breakdown, or take the quiz to match a tracker to how and where you run.
Frequently asked
Do I need built-in GPS to track runs?
Only if you want to run without your phone. Trackers with built-in GPS (like the Amazfit Active 2) log distance on their own; trackers without it use your phone's GPS, which is equally accurate as long as your phone is with you. Phone-free runners should prioritize built-in GPS.
Is wrist heart rate accurate enough for running?
It can lag during hard intervals and sprints, where blood flow at the wrist changes quickly — this affects every optical wrist sensor, not one brand. For steady runs it's reliable; for interval or threshold sessions, pair the tracker with a chest strap for the heart-rate portion.