After over 7 hours of trail marathon the training status...

Training status depends upon VO2max. But VO2max is not computed in the Trail Run app. Ergo ...

Training status depends upon VO2max. But VO2max is not computed in the Trail Run app. Ergo ...

Training status relies on recent VO2max information, but it doesn't need it for every activity so you'd still get training status information and recovery advisor information from a trail run.

@MESTE - how long have you had your F5 for? Has it recorded a VO2max for you in another run?

Training status relies on recent VO2max information, but it doesn't need it for every activity so you'd still get training status information and recovery advisor information from a trail run.

@MESTE - how long have you had your F5 for? Has it recorded a VO2max for you in another run?

Yes, but the OP was expecting his 7 hour trail run to have impacted his training status. It didn't as I would expect; particularly if his current VO2max is low becuase he uses Trail Run exclusively/more frequently.

Yes, but the OP was expecting his 7 hour trail run to have impacted his training status. It didn't as I would expect; particularly if his current VO2max is low becuase he uses Trail Run exclusively/more frequently.

Oh I probably wasn't clear enough in what I was stating.
You need to have VO2max recorded for two recent activities to start getting accurate training status information - obviously if the OP is only doing trail runs then the watch is never going to get a VO2max reading.
After that - you don't need to get a VO2max reading for a particular activity but it should still be able to calculate a reasonable training status.

Yesterday I did this trail marathon https://connect.garmin.com/modern/activity/1717575153

Hear rate was low but still, over 7 hours and I feel my muscles are in need of a break. Just that the training status told me I am in the LOW are, like nothing just happenend. I am on 3.21b, I wonder if this is the culprit!

You need to separate physical from physiological. Physically you worked your muscles. Physiologically you did not tax your cardiorespiratory system. I had a 60km trot on the trails on Saturday. At the end of it I was certainly physically spent but my average HR was 122, middle of my Z2. These devices know nothing of your physical state.

You need to separate physical from physiological. Physically you worked your muscles. Physiologically you did not tax your cardiorespiratory system. I had a 60km trot on the trails on Saturday. At the end of it I was certainly physically spent but my average HR was 122, middle of my Z2. These devices know nothing of your physical state.

Probably best description of this disconnect that I've seen anyone provide so far.

With Garmin & Suunto's training load models, I've also found they favoured intensity over duration. Slogging it out on the trails with a relatively low HR for a very long period of time does almost nothing to the training scores these models provide.

If you want to be given proper credit for duration, you should use TrainingPeaks. Their TSS model gives you the due credit for duration (or at least distance) in an almost linear manner. So an epic 7-hour trail run (for example) will give you a suitably epic TSS, high recovery time, etc.

Probably best description of this disconnect that I've seen anyone provide so far.

With Garmin & Suunto's training load models, I've also found they favoured intensity over duration. Slogging it out on the trails with a relatively low HR for a very long period of time does almost nothing to the training scores these models provide.

If you want to be given proper credit for duration, you should use TrainingPeaks. Their TSS model gives you the due credit for duration (or at least distance) in an almost linear manner. So an epic 7-hour trail run (for example) will give you a suitably epic TSS, high recovery time, etc.

I have my F5 for a month with enough workouts per week, running, biking, core, swimming, and for all I got my Training status reflecting more or less the level. But this was the first long trail run so I was surprised to see that the watch was like ignoring my run simply I stayed in Z2 most of the time. Training Peaks gives a good rTSS to reflect how I feel, also GoldenCheetah, so strange that Fenix 5 through FirstBeat algorithm does not consider such activities.

There is also the question of what you are training for. VO2 Max (as measured in a lab) is generally an indication of how well you would do over 3K or 5K whereas 7 hour runs are whole different beasts.

So while a 7 hour run is great as training for events of that duration it is unlikely to be as "productive" for increasing your VO2 Max.

There is also the question of what you are training for. VO2 Max (as measured in a lab) is generally an indication of how well you would do over 3K or 5K whereas 7 hour runs are whole different beasts.

So while a 7 hour run is great as training for events of that duration it is unlikely to be as "productive" for increasing your VO2 Max.

I see your points, but still, the system should incorporate this effort at least by not telling me afterwards that I should train as normal...

Out of interest, what would you normally do in the days after a 7 hour run?

Furthest I have gone is 50K in a bit under 5 hours (including a few stops) and the next day I "ran" for a few miles but unsurprisingly it wasn't pretty...