Crazy bloods when exercising- jet lag, temperature?????

I would say your body is interpreting the changes to your environment as a stressor and, therefore, responding with raised blood sugars. It's all there: time difference; higher or lower ambient temperatures; possibly different foods at unusual times (different types of ingredients); even a different elevation affecting your oxygen levels, a different environment making you more alert, it doesn't matter if you perceive it as a good thing or a stressful thing, it's still a change . If I change my environment, from rural to the city I feel 'on the boil' the entire time. I should also mention that with an 8 hr time difference your hydration levels will change. If I travel between North America and Europe I'm thirsty as I don't drink at the same times.

So you are running (another stressor) in that 'different environment, and there is always that rush of Adrenaline (epinephrine) before a race, I would say that's a mix of stressors. I was a runner, these differences would certainly have impacted my running times as well as my blood sugars.Edited to insert another sentence.