Sarnia
Sarnia
Peterborough
Peterborough
Driving

Sarnia to Peterborough

Updated: 26 May 2026

Traveling from Sarnia to Peterborough involves a journey of approximately 350 kilometers through the heart of Southern Ontario. The most efficient route is via Highway 401 East, transitioning to Highway 115 North near Clarington. This drive typically takes around four hours, depending on traffic levels near the Greater Toronto Area. Peterborough is known as the gateway to the Kawarthas, offering a distinct change from the industrial landscape of Sarnia. Public transit options are limited, making personal vehicle travel the most practical choice for this route.

Total Distance: 350 km driving distance; 310 km straight-line air distance.
Fastest Way
Driving via Highway 401 and 115 is the fastest route, taking approximately 4 hours.
Cheapest Way
Driving your own vehicle is the most cost-effective way to reach Peterborough from Sarnia.
Compare Sarnia to Peterborough Routes
Driving
Direct
Duration
4 hours
Avg Price
$50-$70 in fuel
Operator
Personal Vehicle
Route
Highway 402 to 401 East, then Highway 115 North.

Highway 115 is generally less congested than the 401.

Travel Tips
  • Route Planning
    Use Highway 407 if you want to bypass Toronto traffic, though it is a toll road.
  • Fueling Up
    Fill your tank in Sarnia or London to avoid higher prices near the GTA.
  • Parking
    Downtown Peterborough offers several municipal parking lots with reasonable daily rates.
  • Navigation
    Download offline maps as cell service can be spotty in rural areas north of the 401.
  • Timing
    Avoid traveling on Friday afternoons to escape the cottage country traffic.
Safety Tips
  • Wildlife
    Be cautious of deer on the roads, especially during dawn and dusk.
  • Construction
    Check for road work on Highway 115 before you leave.
  • Visibility
    Ensure your headlights are clean for night driving on rural stretches.
  • Emergency
    Keep a charged power bank for your phone in case of vehicle breakdown.
People Also Ask
  • Is there a train to Peterborough?
    No, there is no direct passenger rail service to Peterborough.
  • How long does it take to drive?
    It takes about 4 hours under normal conditions.
  • Are there tolls on this route?
    Only if you choose to use the 407 ETR to bypass Toronto.
  • What is the best time to leave?
    Early morning or late evening to avoid peak traffic.
  • Is it a difficult drive?
    It is a straightforward highway drive with minimal technical difficulty.
Quick Info
  • From Sarnia, Ontario, Canada
  • To Peterborough, Ontario, Canada
  • Modes
Best Time to Travel

Autumn for the vibrant fall foliage in the Kawartha region.

Things to Do in Peterborough
1
Trent-Severn Waterway
Visit the Peterborough Lift Lock, the highest hydraulic lift lock in the world. It is a marvel of engineering and a National Historic Site.
2
Petroglyphs Provincial Park
Located near Peterborough, this park features the largest concentration of Indigenous rock carvings in Canada. It is a site of deep cultural significance.
3
Riverview Park and Zoo
A great family destination in Peterborough offering free admission and a variety of animals. It is situated along the Otonabee River.
4
Canadian Canoe Museum
Explore the world's largest collection of canoes and kayaks. It highlights the history of water travel in Canada.
Tags
Sarnia to Peterborough driving to Peterborough Ontario road trip Sarnia travel Peterborough transit Highway 401 to 115 traveling in Ontario Sarnia to Peterborough bus