Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE trip (id VARCHAR, duration INTEGER, zip_code VARCHAR)
### Question:
Find the id for the trips that lasted at least as long as the average duration of trips in zip code 94103.
### Answer:
SELECT id FROM trip WHERE duration >= (SELECT AVG(duration) FROM trip WHERE zip_code = 94103)