Assuming this is 70 miles broken down as 50m hwy, 5m in city, 15m hw to destination.
Its cold in MN, so you probably want to start in MM, which will get the ICE on sooner (so you can use the heater).
It will likely drop you EER from 35 to 11. So after 15 miles you should have had 4-5 miles of ICE heating, can drop out of MM into normal for about 15 miles (until you are 12miles from city or down to 5 miles of EER) when you put it back into MM mode, driving no more than 65mph, until at the city. Pop out of MM (should have 14M EER) and drive EV throughout the city. Then drive all the way to your destination, if you don't need to have EV to show at dest. If you do want to show off EV mode, pop it into MM again after you get out of the city for a little bit (7-8min) and you should arrive with 7-8miles EV.

If my guesses are not right, you can adapt this. If you want more heat, you can do MM normal on shorter cycles. Just keep it around 65 or slower while using MM.

Hi Tboult. I remember reading with interest your post on using Mountain Mode to increase mileage. Can you point me in the right direction? I have a 70 mile mostly flat trip with a city about 15 miles from destination and was wondering when I should use it. Thanks for any help you can give me!