How far is Florissant, MO from Hillsboro, MO?
The driving distance from Florissant, MO to Hillsboro, MO is about 50 miles (80.4 km), with a travel time of about 01h 06m by car.
- The straight-line flight distance is about 40.6 miles (65.4 km).
- For a round trip, plan for roughly 02h 13m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 8:00 AM to 10:00 AM CDT.
Reverse, save, or send this route
This route works well as a day trip with time at the destination. Copy the route link, send it to another device, or print a clean version before you head out.
This route works well as a day trip with time at the destination.
Flight Distance
Driving Distance
Gas Cost Calculator
Leave and Arrive Planner
Pick a departure time to see your estimated arrival and same-day return window.
Drive time stays fixed at 01h 06m.
A morning start gives you useful time at the destination and keeps the return out of the late evening.
You are leaving earlier than the recommended window, which gives you extra margin for breaks and traffic.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
City in Saint Louis County, Missouri, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Scattered Showers And Thunderstorms
Chance Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between Florissant and Hillsboro.
Turn-by-Turn Driving Directions
Step-by-step road directions between Florissant and Hillsboro.
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1
Start on North New Florissant Road
26 m · 6 sec · North New Florissant Road
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2
Turn right onto Washington Street
1 mi · 2 min · Washington Street
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3
Turn left onto Lindbergh Boulevard
1.7 mi · 3 min · Lindbergh Boulevard
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4
Take the ramp slight right
1912 ft · 47 sec
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5
Merge slight left onto Rosemary Straub Davison Highway
20.8 mi · 26 min · Rosemary Straub Davison Highway
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6
Take the exit slight right toward MO 30: Gravois Road
1580 ft · 34 sec
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7
Keep slight right to continue on MO 30 West: Fenton
93 m · 8 sec
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8
Merge slight left
2.4 mi · 3 min
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9
Take the exit slight right toward MO 141: Fenton, Valley Park
1188 ft · 27 sec
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10
Turn left
4 mi · 6 min
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11
Take the exit slight right toward MO 21 South: Hillsboro
1043 ft · 14 sec
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12
Merge slight left onto Veterans Memorial Highway
17.1 mi · 20 min · Veterans Memorial Highway
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13
Take the exit slight right toward MO A
1791 ft · 46 sec
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14
Turn left
1001 ft · 21 sec
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15
Turn straight onto MO 21 Business
63 m · 9 sec
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16
Turn slight right onto Old State Highway 21
1.2 mi · 3 min · Old State Highway 21
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17
Arrive at your destination
0 m · 1 sec · Old State Highway 21
Car Route Details
A richer read on the saved driving route between Florissant and Hillsboro.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
Rosemary Straub Davison Highway
Merge slight left onto Rosemary Straub Davison Highway
20.8 mi · 00h 26m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A comfortable day-trip route
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
Scattered Showers And Thunderstorms leaving Florissant and Chance Showers And Thunderstorms near Hillsboro.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Florissant to Hillsboro?
The road trip is about 50 miles (80.4 km) and usually takes 01h 06m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
What is the halfway point on this route?
Sunset Hills is a useful midpoint, sitting about 25 miles from Florissant and 25 miles from Hillsboro.
How much longer is the road route than the straight-line distance?
The direct path is about 40.6 miles (65.4 km), while the road route adds roughly 9.4 extra miles because roads do not follow the straight air line.
When is the best time to leave for this route?
A good departure window is usually 8:00 AM to 10:00 AM CDT. If you want a more comfortable same-day return, try to leave by 4:16 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $6.64 one way or $13.27 round trip. Estimated CO2 is about 15.6 kg one way.
What should you check before leaving?
Before you leave, expect Scattered Showers And Thunderstorms around Florissant and Chance Showers And Thunderstorms near Hillsboro.
Stop Ideas Near Sunset Hills
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Sunset Hills.
Kirkwood
Gateway Transportation Center
Alton
Washington
Flight Path Map
This map shows the direct air route between Florissant and Hillsboro. Straight-line distance: 40.61 mi (65.36 km).
#1 Florissant
The most populous city in St.
| Population | 50,795 |
| Coordinates | 38.7892200, -90.3226100 |
| Altitude | 175 |
| Country | United States |
#2 Hillsboro
City in Missouri, United States
| Population | 3,355 |
| Coordinates | 38.2322800, -90.5629000 |
| Altitude | 242 |
| Country | United States |
End: Hillsboro (-90.5629, 38.23228)
Estimated Travel Time
Distance: 80 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 39m |
| 40 mph (64.37 km/h) | 01h 14m |
| 50 mph (80.47 km/h) | 00h 59m |
| 60 mph (96.56 km/h) | 00h 49m |
| 70 mph (112.65 km/h) | 00h 42m |
| 80 mph (129 km/h) | 00h 37m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $6.64 | $13.27 |
| Mid-grade | $4.25 | $7.49 | $14.97 |
| Premium | $4.65 | $8.19 | $16.38 |
| Diesel | $5.30 | $9.34 | $18.67 |
Assumes 8.3 L/100 km (about 28.3 MPG). CO2 is an estimate and varies by vehicle, fuel blend, traffic, and terrain.
Prices in Missouri · May 31, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.