| EROADS | The longest of these thoroughfares is almost 5,000 miles long, linking Calais with Kazakhstan (1,5) |
| STREETS | First of sycamore trees framing entrance to these thoroughfares (7) |
| SCALA | I left Calais with Gia |
| CORRIDOR | Long linking passage |
| ACRE | Almost 5,000 square yards |
| ANDES | Mountain chain about 5,000 miles long ... or a hint to 17-, 25-, 31-, 44-, 50- and 61-Across |
| ROMANS | Sixth book of the New Testament; the longest of St Paul's biblical letters (6) |
| CAYUGA | US duck breed named after the longest of the Finger Lakes in New York state (6) |
| KNIGHT | The -'s Tale ; first and longest of The Canterbury Tales (6) |
| HOTDOG | Fast food, the world's longest of which measured over 200 metres from end to end |
| CANADA | Country whose border with the U.S. is more than five thousand miles long |
| USHANT | Island 5 miles long and 2 miles wide. off the west coast of Brittany (6) |
| DUBLIN | City whose main thoroughfare is O'Connell Street (6) |
| LISBON | Home of the Vasco da Gama Bridge, over 7.5 miles long |
| MALAWI | Home of Africa's Calendar Lake (365 miles long, 52 miles wide) |
| YANGTZE | Third-longest river in the world, and the longest of Eurasia, also known as the Chang Jiang (7) |
| SWEDEN | Country almost 1,000 miles long |
| CANTILEVER | Style of the Quebec Bridge (It's the longest of its kind in the world and connects Levis to Quebec City) |
| KINGCOBRA | Southeast Asian snake that is the longest of the venomous species (4,5) |
| OLDTOWNROAD | 2019 Lil Nas X song that topped the charts for 19 weeks the longest of the 2010s: 3 wds. |
