How Long Does LEGO® Monorail Transport System (6990) Take to Build?

A typical builder finishes LEGO® Monorail Transport System (set 6990, 731 pieces) in about 1 hour 50 minutes. Taking it slowly runs closer to 2 hours 25 minutes; building at a fast pace, about 1 hour 20 minutes.

PieceTick estimates build time from piece count, part complexity, the set’s age rating, your experience level, and how you sort pieces. Adjust those on this page for an estimate matched to how you build.