It's easy to locate ELCA churches in other areas of the country. Enter the city and state or zip code of your destination, and get a list of congregations within a given distance (5 to 60 miles) of your location.
Many congregations' web sites will give you the times of worship, directions, etc. You may want to call to verify. Some may change worship hours for the summer.
Don't forget to bring home a bulletin to share with St. Peter's. Happy travels!