What is the Mileage from Golden Co to North Platte Ne?

270 miles taking this route:

1. Take CO-58 or U.S. 6 EAST to I-70 EAST.
2. Take I-70 EAST to I-76 EAST to FT. MORGAN at EXIT 269B.
3. Take I-76 EAST to I-80 EAST to OMAHA in Nebraska.
4. Take I-80 EAST to North Platte. The main exit for North Platte is EXIT 177 which is U.S. 83 (S Jeffers St).