How Long Does LEGO® Space Exploration Telescope (31378) Take to Build?

A typical builder finishes LEGO® Space Exploration Telescope (set 31378, 278 pieces) in about 45 minutes. Taking it slowly runs closer to 1 hour; building at a fast pace, about 35 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.