How far is Interlachen, FL from St. Petersburg, FL?
The driving distance from Interlachen, FL to St. Petersburg, FL is about 161.1 miles (259.3 km), with a travel time of about 02h 41m by car.
- The straight-line flight distance is about 136.6 miles (219.9 km).
- For a round trip, plan for roughly 05h 22m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 8:00 AM to 10:00 AM EDT.
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 02h 41m.
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.
Town in Florida, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Sunny
Driving Route Map
The map below follows the saved road route between Interlachen and St. Petersburg.
Turn-by-Turn Driving Directions
Step-by-step road directions between Interlachen and St. Petersburg.
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1
Start on the route
29 m · 9 sec
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2
Turn left onto Commonwealth Avenue
130 m · 19 sec · Commonwealth Avenue
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3
At the end of the road, turn left
12.1 mi · 15 min
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4
Take the exit slight right
1187 ft · 33 sec
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5
Keep slight left
103 m · 11 sec
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6
Merge slight right onto Sid Martin Highway
24.2 mi · 30 min · Sid Martin Highway
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7
Turn right onto Northwest 70th Street
1.5 mi · 2 min · Northwest 70th Street
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8
Continue on Northwest 77th Street
1.2 mi · 2 min · Northwest 77th Street
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9
Take the ramp straight toward I 75 South: Tampa
2914 ft · 1 min
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10
Merge slight left
82.7 mi · 1 hr 29 min
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11
Keep slight right to continue on I 275 South: Tampa, Saint Petersburg
37.6 mi · 46 min
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12
Take the exit slight right toward FL 595: Treasure Island, Florida Orange Groves Winery
1409 ft · 34 sec
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13
Turn right onto 5th Avenue North
1.2 mi · 2 min · 5th Avenue North
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14
Turn left onto 34th Street North
2693 ft · 1 min · 34th Street North
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15
Continue on 34th Street South
99 m · 14 sec · 34th Street South
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16
Arrive at your destination
0 m · 1 sec · 34th Street South
Car Route Details
A richer read on the saved driving route between Interlachen and St. Petersburg.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
I 75 South
Merge slight left
82.7 mi · 01h 29m
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.
Mostly Sunny leaving Interlachen and Sunny near St. Petersburg.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Interlachen to St. Petersburg?
The road trip is about 161.1 miles (259.3 km) and usually takes 02h 41m 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?
Bushnell is a useful midpoint, sitting about 81.2 miles from Interlachen and 79.9 miles from St. Petersburg.
How much longer is the road route than the straight-line distance?
The direct path is about 136.6 miles (219.9 km), while the road route adds roughly 24.5 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 EDT. If you want a more comfortable same-day return, try to leave by 1:08 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $23.56 one way or $47.12 round trip. Estimated CO2 is about 50.5 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Interlachen and Sunny near St. Petersburg.
Stop Ideas Near Bushnell
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 Bushnell.
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Flight Path Map
This map shows the direct air route between Interlachen and St. Petersburg. Straight-line distance: 136.64 mi (219.9 km).
#1 Interlachen
City in Putnam County, Florida, United States of America
| Population | 1,477 |
| Coordinates | 29.6242100, -81.8925600 |
| Altitude | 32 |
| Country | United States |
#2 St. Petersburg
The second most populous city in Florida.
| Population | 253,693 |
| Coordinates | 27.7708600, -82.6792700 |
| Altitude | 13 |
| Country | United States |
End: US 19 (-82.679372, 27.77086)
Estimated Travel Time
Distance: 259 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 05h 22m |
| 40 mph (64.37 km/h) | 04h 01m |
| 50 mph (80.47 km/h) | 03h 13m |
| 60 mph (96.56 km/h) | 02h 41m |
| 70 mph (112.65 km/h) | 02h 18m |
| 80 mph (129 km/h) | 02h 00m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.15 | $23.56 | $47.12 |
| Mid-grade | $4.60 | $26.11 | $52.21 |
| Premium | $4.90 | $27.81 | $55.62 |
| Diesel | $4.35 | $24.71 | $49.42 |
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 Florida · Apr 19, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.