I am going downhill when I want to go uphill! More GPX woes lol...

[Manc33]

No idea which forum best suits this, but it's more about indoor smart trainers than anything so here it is.

I have got a GPX file so I can ride up (part of) Alpe d'Huez on my indoor trainer. Tonight I started the ride and it was the expected hill gradients around 6% to 20%. After a while I saw that I was going 15% downhill! Surely this road isn't actually like that? I was shifting from granny ring to outer and back and it was just silly...

So I ended up making a GPX file of a route that's 10 miles long and 10% gradient. It only has 2 points going in a straight line. The 2 points are completely random so don't use this in real life (you'd end up doing that GeoExploring or whatever they call it going in a straight line no matter what).

On an indoor trainer it's useful, at least to me. I know devices like Garmin/Wahoo have a setting to put a 10% gradient, but I prefer to have an actual GPX course I can just go to and use, so here it is

EDIT: The GPX file doesn't work It doesn't set the gradient, it's at 0% on my Garmin.

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Nevermind, it doesn't work.

I scrapped trying to do this altogether with GPX files. Since the Garmin can easily be set at a certain gradient, or watts, it's a lot easier doing that after all. On the Garmin (Edge 1030 Plus) it's really simple, just put it on the Indoor profile and swipe down, go left or right once or twice and there it is, grade, or watts.

[tim-b]

9.98 miles. The bit through Stafford would be hard in a straight line

[Manc33]

The GPX file doesn't work

It doesn't set the gradient, it's at 0% on my Garmin.

I scrapped GPX files altogether for doing this. It's quite a faff even if it could be made to work and I never realized how pointless it is when the Garmin can just be set at X grade or X watts anyway.

Managed 10% grade last night and after 25 mins of it thought OK, that's enough of that.

Averaged 149W when it's normally more like 100W.

It's all working itself out now I've added the below calcs to my Kickr ride diary spreadsheet. It's based on Normalized Watts x4.2 = cals burned per hour. It's not totally linear, but that 4.2 is the average of Cals per hour ÷ Watts over 64 rides.