Thanks for the reply.

I just use flat pedals. Had the bike setup properly about 8 months ago.

I get the problem from other activities too so hopefully the bike is ok now. To be honest, its better than when I try to do running. My problem is that I live in NZ Wellington, where the tracks are either flat (boring) or very steep. Doesn't give my legs much chance to warm up.

I guess its not going to magically get better, but wonder if its normal to continue training with a bit of discomfort while the glutes on the left side go back to normal. It's not very painful, just an annoying dull ache that's mainly there when I have finished doing the activity i.e. the next day.

Cheers

Rob