| Rumford-to-Bangor dir. | 22 |
| Reverse from WSW | 16 |
| Raleigh-to-Norfolk dir. | 23 |
| Raleigh-to-Chesapeake dir. | 26 |
| Prow's direction | 20 |
| Propyl ending | 13 |
| Prop ending | 11 |
| Port au Basques to Gander dir. | 30 |
| Port au Basque to Gander dir. | 29 |
| Port au Basque to Bonav-ista Twillingate dir. | 45 |
| Pomona-to-San Bernardino dir. | 29 |
| Point on a rose?: Abbr. (3) | 27 |
| Pittsburgh-to-Wilkes-Barre dir. | 31 |
| Pittsburgh-to-Providence dir. | 29 |
| Pittsburgh-Boston dir. | 22 |
| Pilot's heading, sometimes | 30 |
| Phoenix-to-Philly dir | 21 |
| Philadelphia-to-Boston dir. | 27 |
| Phenyl ender | 12 |
| Peterborough to Pembroke dir. | 29 |
| Peoria-to-Cleveland dir. | 24 |
| Part of a compass box | 21 |
| Paris-to-Reims dir. | 19 |
| Outbound LIRR direction | 23 |
| Ottawa-to-Halifax dir. | 22 |
| Osaka-to-Yokohama dir. | 22 |
| Organic suffix | 14 |
| Organic compound suffix | 23 |
| Orange-to-Redlands dir. | 23 |
| Oklahoma to Kentucky dir. | 25 |
| Okla. City-to-Tulsa direction | 29 |
| OKC-to-D.C. direction | 21 |
| Ogden-to-Casper dir. | 20 |
| Oakland-to-Stockton dir. | 24 |
| NYC-to-the-Hamptons dir. | 24 |
| Nob Hill-to-Telegraph Hill dir. | 31 |
| Nigeria-to-Chad dir. | 20 |
| New York-to-Providence dir. | 27 |
| New Orleans-to-Savannah dir. | 28 |
| Needle point? (abbr.) | 21 |
| Nautical course | 15 |
| Nantes-to-Paris dir. | 20 |
| N.Y.C.-to-London dir. | 21 |
| N.Y.-to-N. Eng. dir. | 20 |
| N.Y.-to-Boston dir. | 19 |
| N.Y.-to-Bos. dir. | 17 |
| N.M.-to-N.J. dir. | 17 |
| Montgomery-to-Macon dir. | 24 |
| Mo.-to-Me. direction | 20 |
| Minsk-to-Moscow dir. | 20 |
| Methyl or ethyl follower | 24 |
| Methyl ending | 13 |
| Memphis-to-Nashville flight path | 32 |
| Memphis-to-Knoxville dir. | 25 |
| Melbourne-to-Snowy Mts. direction | 33 |
| Mecca-to-Kabul dir. | 19 |
| Mali-to-Libya dir. | 18 |
| Macon-to-Augusta dir. | 21 |
| London to Kitchener dir. | 24 |
| Lodz-to-Warsaw dir. | 19 |
| Lisbon-to-Madrid dir. | 21 |
| Lima-to-Georgetown dir. | 23 |
| Last three letters of TNT | 25 |
| Lake Erie-to-Lake Ontario dir. | 30 |
| LA-to-NYC flight path | 21 |
| La Crosse-Green Bay dir. | 24 |
| L.A.-to-NYC dir. | 16 |
| L.A.-to-N.Y.C. heading | 22 |
| L.A.-to-Denver dir. | 19 |
| L.A.-to-D.C. direction | 22 |
| Kansas-to-Michigan dir. | 23 |
| Kansas-to-Maine dir. | 20 |
| K.C.-to-Chicago direction | 25 |
| Jackson-to-Birmingham dir. | 26 |
| Hydrocarbon finish | 18 |
| Hydro-carbon suffix | 19 |
| Hurricane hdg., perhaps | 23 |
| Hurricane dir., sometimes | 25 |
| How the Rangers fly to play the Red Sox | 39 |
| Houston-to-Raleigh dir. | 23 |
| Houston-to-Charleston dir. | 26 |
| Helm heading (abbr.) | 20 |
| Heading, for short | 18 |
| Heading from the Southwest, sometimes | 37 |
| Heading abbr. | 13 |
| Grand Rapids-to-Saginaw dir. | 28 |
| GPS-screen letters | 18 |
| GPS readout | 11 |
| Gettysburg-to-York dir. | 23 |
| General dir. of the St. Lawrence River | 38 |
| General dir. of Sal Paradise's return trip in "On the Road" | 73 |
| Gazetteer letters | 17 |
| From S.F. to Tahoe | 18 |
| From Pitts. to Boston | 21 |
| From K.C. to Detroit | 20 |
| From Ft. Myers to Ft. Pierce | 28 |
| Ethyl's end | 15 |
| Ethyl's adherent | 20 |
| Ethyl trailer | 13 |
| Ethyl or methyl ending | 22 |