/ Quizzes Grand Canyon Quiz by Liz OlsonRead more about the Grand Canyon and see our Grand Canyon Slideshow! Question 1 (out of 10): The Grand Canyon is 277 miles long and how many miles deep? onehalf two one four More Quizzes from Factmonster: Try another US Quiz ! Quiz Archive ©2022 Sandbox Networks Inc. All rights reserved. Sandbox Learning is part of Sandbox & Co., a digital learning company.