Figure 29. Los Angeles/Grapevine North Section of proposed Hyperloop route. Table 4. Los Angeles/Grapevine North data at 555 mph (890 kph). Criteria 0.5g Acceleration Min. bend radius at 7.80 miles 555 mph (890 kph) (12.6 km) Distance 40.0 miles (64.4 km) Journey time 267.4 seconds Tunnel distance 10.7 miles (17.2 km)