(Image credit: Future)

This weekend I ran my 7th marathon in Frankfurt, Germany, and, while worrying about the pouring rain and strong gusts of wind, I made things even more interesting by putting the Apple Watch Ultra 4 and Garmin Fenix 9 Pro head-to-head.

The Apple Watch Ultra 4 is Apple’s newest rugged sports watch, with a new heart rate monitor and a readiness score, helping you work out when to push yourself and when to recover. The Fenix 9 Pro, on the other hand, is Garmin ’s most advanced sports watch yet. Both came out this year, and both offer all the sports modes and stats you need to track workouts, plus comprehensive daily activity and sleep tracking.

We’ve put all the features head-to-head in our Apple Watch Ultra 4 vs Garmin Fenix 9 Pro face-off here, but read on to see which came out on top on race day.

The Apple Watch Ultra 4 is Apple's latest rugged adventure watch, with a new heart rate sensor and a daily Readiness score.

I wore the Apple Watch Ultra 4 and the Garmin Fenix 9 Pro for a…