| Porsgrunn to Town and Country (Missouri) | 4,304.45 mi (6,927.35 km) |
| Porsgrunn to Towson (Maryland) | 3,817.09 mi (6,143.01 km) |
| Porsgrunn to Tracy (California) | 5,185.72 mi (8,345.61 km) |
| Porsgrunn to Traverse City (Michigan) | 3,815.08 mi (6,139.77 km) |
| Porsgrunn to Travilah (Maryland) | 3,856.24 mi (6,206.02 km) |
| Porsgrunn to Trenton (Michigan) | 3,881.95 mi (6,247.40 km) |
| Porsgrunn to Trenton (New Jersey) | 3,710.64 mi (5,971.69 km) |
| Porsgrunn to Trenton (Ohio) | 4,068.27 mi (6,547.24 km) |
| Porsgrunn to Triangle (Virginia) | 3,886.29 mi (6,254.37 km) |
| Porsgrunn to Trinity (Florida) | 4,647.01 mi (7,478.65 km) |
| Porsgrunn to Trophy Club (Texas) | 4,835.26 mi (7,781.60 km) |
| Porsgrunn to Trotwood (Ohio) | 4,046.29 mi (6,511.87 km) |
| Porsgrunn to Troutdale (Oregon) | 4,711.89 mi (7,583.06 km) |
| Porsgrunn to Troy (Alabama) | 4,549.85 mi (7,322.28 km) |
| Porsgrunn to Troy (Illinois) | 4,281.13 mi (6,889.81 km) |
