Figure 28. Los Angeles/Grapevine South Section of proposed Hyperloop route. Table 3. Los Angeles/Grapevine South data at 300 mph (480 kph). Criteria 0.5g Acceleration Min. bend radius at 2.28 miles 300 mph (483 kph) (3.67 km) Section Distance 13.4 miles (21.6 km) Journey time 167.6 seconds Tunnel distance 1.0 miles (1.61 km)