Bwlch-Y-Groes loop

I have planned this loop for next weekend, there appears to be no practical way to avoid the A 458... I drove on it last year and didn't seem lethal, but never cycled on it, anyone can comment or suggest a better way without adding 50 miles to the loop?
https://www.strava.com/routes/6304611
https://www.strava.com/routes/6304611
left the forum March 2023
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If you're in the general area check out the llyn stwlan dam climb
I've done Hardknott, I've done Bealach Na Ba, what can possibly go wrong... ?
So you say the A 458 is fine then?
I'll check that climb out... EDIT: looks like the mini-Stelvio of Wales...
Last time I rode up the Hirnant from Bala with a friend, both of us on lightweight carbon bikes, my wife on her electric bike left us both for dead on the climb. We couldn't catch her on the descent but finally overhauled her on the flat bit round the lake just before we got back to our cars!
Thanks!
Your suggestion makes sense, although the half loop around lake Vyrnwy looks appealing on paper... although I can do it your way and add the full lake loop to the ride
https://www.strava.com/routes/6304611
Route was https://www.strava.com/routes/5327164
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That's the one. Definitely recommended if you want a tough ride and good scenery. If you want to cut it short, you can go up Cwm Hirnant from Bala to Vyrnwy, have some refreshments at a cafe there by the dam and ride back from the western end of the lake up to the top of the Bwlch-y-Groes and down to Bala.
On a sunny Sunday in the summer months the A458 can have a significant number of motorcyclists trying to outdo each other in the race to the mortuary.
Recommend the cyclist friendly Old Barn Cafe for a pitstop at the south-west end of Vyrnwy dam. Go past the first (obvious) cafe on the left to the second one on the right.