Driving route · Canada

Route from Saint Isidore de Prescott to Lac-Brome

Interactive map, distance, and indicative drive time for the route from Saint Isidore de Prescott to Lac-Brome — with the live planner for up-to-date turn-by-turn directions.

This page provides the map and indicative distance data for the route between Saint Isidore de Prescott (Ontario) and Lac-Brome (Quebec). Use the live planner below to get up-to-date driving directions by car, on foot, or by bicycle.

Distance from Saint Isidore de Prescott to Lac-Brome

The straight-line distance between Saint Isidore de Prescott and Lac-Brome is 187.8 km. The estimated road distance by car is around 225 km, with an indicative drive time of 2 h 30 min.

Straight-line distance 187.8 km
Estimated road distance ~225 km
Indicative drive time 2 h 30 min
Note: values are approximate estimates. Road distance is calculated by multiplying the straight-line distance by a road-deviation factor (1.13–1.30 based on length). Drive time assumes ~90 km/h average. Real traffic, tolls, and conditions can vary significantly. Use the live planner for current data.

Trip cost and route type: Saint Isidore de Prescott – Lac-Brome

Route type Medium

Medium-distance route (100–300 km) — plan a stop and check fuel before departure.

Indicative fuel cost $25–$34

Estimate: ~225 km, 8 L/100 km, $1.65/L. ±15%. Excludes tolls.

Driving directions from Saint Isidore de Prescott to Lac-Brome

The map shows the locations of Saint Isidore de Prescott (A) and Lac-Brome (B). Use the form below to calculate the up-to-date road route with turn-by-turn directions, real distance, and estimated drive time.

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Driving directions from Saint Isidore de Prescott to Lac-Brome

Real distance: 247.2 km  ·  Estimated time: 3 h 32 min

🗓 Calculated on June 4, 2026
  1. Drive south on Ste. Catherine Street/Rue Sainte-Catherine/CR 9. 5.2 km
  2. Turn right to take the 417 East ramp toward Montreal. 83.1 km
  3. Take exit 32 onto 30 toward Sorel-Tracy/Toronto. 4.1 km
  4. Keep left to stay on 30. 61.8 km
  5. Take exit 67 onto 10/15 toward Sherbrooke. 1.1 km
  6. Keep right to take I 89/10/15 toward Sherbrooke. 10.7 km
  7. Keep left to stay on 10/Autoroute des Cantons-de-l'Est. 68.3 km
  8. Take exit 90 onto 243 toward Waterloo/Valcourt/Lac-Brome. 264 m
  9. Turn right onto Chemin Foster/243. Continue on 243. 3.4 km
  10. Bear left onto Chemin Lakeside/243. 8.5 km
  11. Turn right onto Chemin de Knowlton/Knowlton Road/104. 460 m

Standard car route without avoiding highways. For advanced options (motorcycle, bicycle, transit, avoid tolls) use the live planner above.

Estimate trip cost: Saint Isidore de Prescott – Lac-Brome

Litres estimated
Fuel cost
Toll estimate
Total estimate
Range ±15%

Indicative estimates based on ~225 km. Tolls calculated at ~$0.10/km on tolled segments. The calculator updates with the live planner's real distance. Actual consumption, driving style, weather, and toll rates vary.

Origin and destination

Origin

Saint Isidore de Prescott

Ontario · 45.38580, -74.90580

Saint Isidore de Prescott sits in eastern Ontario as a small rural community mapped amid agricultural countryside north of the St. Lawrence lowlands. On regional maps it appears as a local village serving surrounding…

Destination

Lac-Brome

Quebec · 45.21670, -72.51670

Lac-Brome sits in southern Quebec's Eastern Townships on and around Brome Lake. On provincial maps it registers as a mixed lake-and-valley municipality with shoreline villages, rural hamlets and forested low hills. For…

How to drive from Saint Isidore de Prescott to Lac-Brome

The straight-line distance between Saint Isidore de Prescott (Ontario) and Lac-Brome (Quebec) is about 187.8 km. The actual road distance varies by chosen route, road type, and travel conditions — especially in winter and across mountain or northern segments.

Before you leave, consider:

  • Check current traffic with a navigation app — particularly around major cities.
  • Look up any toll segments on your route (Ontario 407, select bridges).
  • In winter or at higher elevations, drive times and conditions can change quickly. Carry a charged phone, fuel reserve, and weather-appropriate gear.
  • Plan stops at service centres or towns along the way — fuel and rest stops can be sparse on remote sections.

Route description: Saint Isidore de Prescott – Lac-Brome

Looking for directions from Saint Isidore de Prescott to Lac-Brome? The estimated road distance is 225 km (187.8 km straight line), with an indicative drive time of 2 h 30 min. A medium-distance route (100–300 km) that connects Ontario to Quebec. Plan at least one stop and check fuel before departure. Choose the transport mode in the live planner to get the detailed track.

The trip starts at Saint Isidore de Prescott (Ontario) — coordinates 45.3858° N, -74.9058° E. The destination is Lac-Brome (Quebec), at 45.2167° N, -72.5167° E.

Practical tips for the Saint Isidore de Prescott – Lac-Brome drive

Terrain along the way

The route starts in Ontario — a province Great Lakes shoreline in the south, Canadian Shield forests across the north — and reaches Lac-Brome in Quebec, St. Lawrence valley framed by the Laurentians and the Appalachians. The route also passes near Mercier (Quebec).

When to leave

For a medium-distance trip, leaving before 07:00 or after 10:00 helps you avoid urban congestion. Friday afternoons and Sunday returns often slow the major highways.

Alternatives

For this route of about 225 km, consider VIA Rail Canada — VIA's Corridor service connects many Eastern Canadian cities, and the long-distance trains (the Canadian, Ocean) run through the Prairies and the Maritimes. Cross-border trips may also include Amtrak's Adirondack or Cascades. Check schedules at viarail.ca and amtrak.com.

Explore Lac-Brome

Full information about Lac-Brome: interactive map, GPS coordinates, elevation, nearby cities, and routes to and from Lac-Brome.

Lac-Brome profile →

Explore Saint Isidore de Prescott

Full information about Saint Isidore de Prescott: map, GPS coordinates, and all routes from Saint Isidore de Prescott to other Canadian cities.

Saint Isidore de Prescott profile →

Related tools

Cities along the Saint Isidore de Prescott – Lac-Brome route

These cities are near the direct route between Saint Isidore de Prescott and Lac-Brome. They may be useful as a stopover or alternate destination.

Routes with intermediate stops: Saint Isidore de Prescott → Mercier · Saint Isidore de Prescott → Léry · Saint Isidore de Prescott → Châteauguay

Related routes

From Saint Isidore de Prescott to other cities:

To Lac-Brome from other cities:

From Lac-Brome to intermediate cities:

All info about Saint Isidore de Prescott →  ·  All info about Lac-Brome →

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Frequently asked questions: Saint Isidore de Prescott – Lac-Brome

What is the straight-line distance between Saint Isidore de Prescott and Lac-Brome?

The straight-line distance between Saint Isidore de Prescott and Lac-Brome is about 187.8 km. This is the direct geometric distance between the two coordinates, ignoring road geometry.

What is the estimated road distance from Saint Isidore de Prescott to Lac-Brome?

The estimated road distance from Saint Isidore de Prescott to Lac-Brome is about 225 km — derived by multiplying the straight-line distance by a road-deviation factor (1.13–1.30 based on length). For an up-to-date route, use the live planner.

How long does it take to drive from Saint Isidore de Prescott to Lac-Brome?

Indicative drive time from Saint Isidore de Prescott to Lac-Brome is about 2 h 30 min, based on an average highway speed of 90 km/h on a mixed motorway/highway profile. Real time depends on traffic, weather, stops, vehicle type, and conditions.

How do I get up-to-date driving directions from Saint Isidore de Prescott to Lac-Brome?

Use the live planner on this page: select your transport mode and click "Update route". You'll see the route with turn-by-turn directions, current distance, and estimated time based on up-to-date routing data.

Does the Saint Isidore de Prescott–Lac-Brome route involve highway tolls?

CanadaDrivingDirections.com does not provide toll details. Toll roads are limited in Canada — Ontario's 407 ETR, a few Quebec bridges, and the Confederation Bridge to PEI are the main ones. Check the operator's site for current pricing.

How does traffic affect the route from Saint Isidore de Prescott to Lac-Brome?

Traffic varies by time of day, season, and weather. The live planner uses up-to-date routing data; for live traffic, use a navigation app before departure — especially in winter when conditions can change rapidly.

Is there an alternative route from Saint Isidore de Prescott to Lac-Brome?

A common alternative is going via Mercier or Léry. Use the live planner to compare routes.

Can I open the Saint Isidore de Prescott–Lac-Brome route in Google Maps?

Yes. Click "Open in Google Maps" on this page to view the route in the Google Maps app or browser. You can also open Google Maps directly and enter Saint Isidore de Prescott as origin and Lac-Brome as destination.