So, I was originally hoping for a continent of which you'd have to sail around the world to get from one side to the other, but now I'm thinking that, without making the planet significantly cooler than we have it nowadays, there's nowhere to put enough ice to keep the Isthmus of Suez from being flooded.
But that's fine. A long strait is at least as cool as an isthmus.
I could see ice forming in the north pacific rim mountains, going down, eventually pulling enough water to uncover bering straight, ice going on there & then
ice climbing up southern african highlands honestly., (doesn't get to the highlands)
Though problem with that is ice would suppress Bering straight. Hmm. You can fudge the numbers some how you want it.
.EDIT.. Yeah, looking at it the alaska area is definitely within greenland glaciatian range & it will probably go down pretty far south, esp with it starting in the mountains, Kamchatka is iffy, & probably isolated. africa glaciates in a full ice age not sure that happens.
Here is the section Glaciates like greenland:
Here is a size comparison:
I would say just this & no other glaciatian leads to about ~50 meters higher sea level rise than OTL, the Rockies Glaciatian would be extremely impressive and would follow the mountains & it's valleys further than I showed in the top pic. I think the bering straight would hold continental ice, not sea ice given how antartica works but I'm not completly sure.
I can't do this cause I have a mac & program doesn't work, but putting the pole in St Lawrence Isle/ a bit to the north east means you get glaciation in the bering sea, alaska and some in antartica.