Llangefni Triangle covers 1.9 mi with 15 corners, requiring a balanced approach to maintain flow through its shifting rhythm. A 30 m elevation difference between the lowest and highest points means drivers must carry momentum over the rises to avoid losing time. The loop traces the streets of Llangefni in the UK, a town characterized by scattered buildings and local landmarks like Theatr Fach and Moriah Chapel. It plays free in the browser with no account and no install, offering a technical test of precision in a town setting.