# Ohio State Route 78

State Route 78 (SR 78) is a state highway that runs for 105 miles (169 km) from Nelsonville to Clarington in the U.S. state of Ohio. Car and Driver has called it one of the most scenic highways nationwide. The stretch of this highway that runs along the south side of Burr Oak State Park in Morgan County, Ohio, is well known for its extreme curves and views, and is sometimes locally referred to as the "Rim of the World." Much of this highway runs through old coal-producing areas.
SR 78 is an Ohio Scenic Byway and is considered as part of the Appalachian Byway.

## Major intersections

| County | Location | mi | km | Destinations | Notes |
| Athens | Nelsonville | 0.00– 0.46 | 0.00– 0.74 | US 33 / US 33 Bus. west / SR 691 south – Logan, Athens, Hocking College | Interchange; eastern terminus of US 33 Bus., northern terminus of SR 691 |
| Athens | Buchtel | 3.10 | 4.99 | SR 685 east | Western terminus of SR 685 |
| Hocking | No major junctions | No major junctions | No major junctions | No major junctions | No major junctions |
| Athens | No major junctions | No major junctions | No major junctions | No major junctions | No major junctions |
| Hocking | Murray City | 6.94 | 11.17 | SR 216 north (Locust Street) – New Straitsville | Southern terminus of SR 216 |
| Athens | Glouster | 12.05 | 19.39 | SR 13 south (High Street) – Chauncey | Western end of SR 13 concurrency |
| Athens | Glouster | 13.07 | 21.03 | SR 13 north – New Lexington | Eastern end of SR 13 concurrency |
| Morgan | Union Township | 23.23 | 37.39 | SR 555 north – Portersville | Western end of SR 555 concurrency |
| Morgan | Union Township | 23.35 | 37.58 | SR 555 south – Chesterhill | Eastern end of SR 555 concurrency |
| Morgan | Malta Township | 30.68 | 49.37 | SR 377 south / CR 98 (Cordray Road) – Sharpsburg, Chesterhill, Pennsville | Northern terminus of SR 377 |
| Morgan | Malta Township | 31.35 | 50.45 | SR 37 west – New Lexington | Western end of SR 37 concurrency |
| Morgan | Malta | 32.60 | 52.46 | SR 669 west (Main Street) – Deavertown | Eastern terminus of SR 669 |
| Morgan | McConnelsville | 32.81 | 52.80 | SR 60 north / SR 37 ends – Zanesville | Eastern end of SR 37 concurrency; western end of SR 60 concurrency |
| Morgan | McConnelsville | 33.36 | 53.69 | SR 376 north (Kennebec Avenue) | Western end of SR 376 concurrency |
| Morgan | McConnelsville | 33.43 | 53.80 | SR 60 south / SR 376 south (Main Street) / 7th Street – Beverly, Marietta | Eastern end of SR 60 / SR 376 concurrencies |
| Morgan | Morgan Township | 35.63 | 57.34 | SR 607 south (Monastery Road) | Northern terminus of SR 607 |
| Morgan | Bristol Township | 42.36 | 68.17 | SR 83 north – Cumberland | Western end of SR 83 concurrency |
| Morgan | Manchester Township | 45.21 | 72.76 | SR 83 south – Beverly | Eastern end of SR 83 concurrency |
| Noble | Olive Township | 58.24– 58.45 | 93.73– 94.07 | I-77 – Marietta, Cleveland | Exit 25 (I-77) |
| Noble | Olive Township | 58.82 | 94.66 | SR 821 – Caldwell, Dexter City | |
| Noble | Caldwell | 60.19 | 96.87 | SR 564 east – Harriettsville | Western terminus of SR 564 |
| Noble | Center Township | 63.86 | 102.77 | SR 147 north – Sarahsville, Barnesville | Southern terminus of SR 147 |
| Noble | Stock Township | 67.66 | 108.89 | SR 260 south – Carlisle | Northern terminus of SR 260 |
| Noble | Summerfield | 71.44 | 114.97 | SR 146 west (Main Street) / CR 1 (Lexington Ridge Road) | Eastern terminus of SR 146 |
| Monroe | Seneca Township | 74.77 | 120.33 | SR 379 east | Western terminus of SR 379 |
| Monroe | Lewisville | 81.34 | 130.90 | SR 145 (Malaga Street) – Malaga, Lower Salem | |
| Monroe | Woodsfield | 88.50 | 142.43 | SR 26 / SR 800 (Main Street) – Jerusalem, Barnesville, Antioch | |
| Monroe | Adams Township | 96.20 | 154.82 | SR 536 south – Hannibal | Northern terminus of SR 536 |
| Monroe | Clarington | 104.96 | 168.92 | SR 7 – Powhatan Point, Matamoras | |
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi Concurrency terminus ||||||