Strava

Submitted a "request" (a.k.a. a bug) for the missing Estimated Best Effort stuff. Will see whether I get any response.

It was sitting there doing nothing but I logged it again when I caved in and paid for Premium. Answered within one day (their SLA for Premium members):

Sorry about that. I'm looking into the issue and have a feeling it's related to your Garmin. The device you're using to record your rides is actually a single sport device—in other words, the sport type 'run' is always written into the file. Because of this, I believe that there is probably a ride somewhere in your account that's been awarded best efforts in the background...

I'll keep on looking, but to prevent this from happening in the future, don't change the activity type to 'ride' from the upload page. Instead, let the activity save as a run and then use the pencil icon to change it to a ride.

Estimated Best Efforts now fixed on my profile but annoying that I have to frig things. As a user I don' tsee why I have to add it as a run and then change it to a ride rather than being able to just set it as a ride when uploading. Smacks of shite code somewhere.