So, I'm not sure I'm yet ready to do intervals - only been on the bike for 1000 miles so far. But every time I read about them, there's always one question that pops into my mind:

Where the heck do you DO intervals at?

For those with power, I can't imagine the terrain matters that much, because you'll still be able to see your power regardless of whether you're goin uphill or downhill. But I dont have power and I certainly cant afford it anytime so, so I would simply be doing them based off of my RPE.

Because of that, I think terrain is going to matter quite a bit. So - given that I live in a very hilly location, where should I be doing intervals? Should I find the longest stretch of flattish road I can get? Or should I just go and throw myself at whatever monster hills are nearby?