| Porsgrunn to Tulare (California) | 5,234.87 mi (8,424.71 km) |
| Porsgrunn to Tullahoma (Tennessee) | 4,354.71 mi (7,008.22 km) |
| Porsgrunn to Tulsa (Oklahoma) | 4,613.46 mi (7,424.64 km) |
| Porsgrunn to Tumwater (Washington) | 4,630.63 mi (7,452.28 km) |
| Porsgrunn to Tupelo (Mississippi) | 4,498.28 mi (7,239.29 km) |
| Porsgrunn to Turlock (California) | 5,186.69 mi (8,347.17 km) |
| Porsgrunn to Tuscaloosa (Alabama) | 4,518.74 mi (7,272.21 km) |
| Porsgrunn to Tustin (California) | 5,354.25 mi (8,616.83 km) |
| Porsgrunn to Twentynine Palms (California) | 5,285.88 mi (8,506.81 km) |
| Porsgrunn to Twin Falls (Idaho) | 4,725.82 mi (7,605.47 km) |
| Porsgrunn to Twin Rivers (New Jersey) | 3,699.42 mi (5,953.64 km) |
| Porsgrunn to Twinsburg (Ohio) | 3,870.66 mi (6,229.22 km) |
| Porsgrunn to Two Rivers (Wisconsin) | 3,907.75 mi (6,288.92 km) |
| Porsgrunn to Tyler (Texas) | 4,817.96 mi (7,753.76 km) |
| Porsgrunn to Tysons (Virginia) | 3,862.94 mi (6,216.80 km) |
