How Long Does LEGO® Railway Express with Transformer and Speed Regulator (4561) Take to Build?

A typical builder finishes LEGO® Railway Express with Transformer and Speed Regulator (set 4561, 671 pieces) in about 1 hour 45 minutes. Taking it slowly runs closer to 2 hours 20 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.