BCM 600km audax (with Bwlch-y-Sarnau variation) - 6733m in 600ish km (1.1%)
Not sure where that figure is from but BCM has always been 7500m to 8000m depending on the route (classic vs original, etc). There's huge variation given in both the values from DEM derived plots such as RWGPS/Bikely/etc and also huge variations in what people record on their GPS (even before any smoothing is applied).
Figure is from my route plot for BCM 2018 - BCM 600km audax - with Bwlch-y-Sarnau variation (which I've previously shared):
https://ridewithgps.com/routes/27369491" BCM has always been 7500m to 8000m . . ." . . . Same as it's always been 600+km, then. Would you care to elaborate on the "classic" and the "original" route? I thought @Ian H had said we really don't know what route Brian took to visit Keith Oliver (though the current one is good, except that it retraces its last 70km. I can't help thinking that Brian would probably have gone over Gospel Pass on the way out but not on the way back.
Please provide an example of a plot of the current BCM route with 7,500+m of climb.
Climb that riders record on their GPS devices lacks several degrees of assurance (barometrics, GPS poor accuracy of altitude with small increments etc, which is widely known), smoothed or not.
Looking forward to Brevet Cymru - not too steep?
Brevet Cymru 400 this Saturday has some hilly parts (climb out of New Quay a particular highlight) but is essentially 'not hilly', with 4400m of climb -
https://ridewithgps.com/routes/13068909It has a 3.5 AAA point award because somewhere between Tintern and Trecastle the climb is circa 3376m (I think). After that it's the Usk valley all the way, just about.
On the same day, LWL is flat.