San Luis Obispo to Modesto

• Fuel Up

  Fill your tank in San Luis Obispo as gas prices are often higher in remote stretches of the Central Valley.
• Check Traffic

  Use navigation apps to monitor construction on CA-99, which is a major trucking corridor.
• Hydration

  Keep extra water in your car, especially during summer months when temperatures exceed 100 degrees.
• Rest Stops

  Utilize the designated rest areas along CA-99 to avoid fatigue on the long, straight stretches of road.
• Snack Strategy

  Pack snacks before leaving, as healthy food options are limited between major towns.

• Watch for Trucks

  CA-99 has heavy semi-truck traffic; maintain a safe following distance at all times.
• Sun Glare

  Wear polarized sunglasses, as the flat valley landscape can cause significant glare during sunrise and sunset.
• Emergency Kit

  Carry a basic roadside emergency kit including jumper cables and a flashlight.
• Cell Service

  Be aware that cell service may be spotty in the rural areas between Paso Robles and the Central Valley.

• Is there a train from SLO to Modesto?
  No direct train exists; you would need to take Amtrak to a hub and transfer to a bus.
• How long is the drive?
  The drive typically takes between 3.5 and 4.5 hours depending on traffic.
• Are there tolls on this route?
  No, there are no toll roads on the standard route between these two cities.
• What is the best highway to take?
  US-101 to CA-46 to CA-99 is the most efficient path.
• Is it safe to drive at night?
  Yes, but be cautious of wildlife crossing rural roads in the coastal mountain passes.

• From San Luis Obispo, California, United States
• To Modesto, California, United States
• Modes

Spring and Fall are ideal to avoid the extreme heat of the Central Valley summer.