Carthage, NY to Thousand Island Park, NY is 45 miles and takes about 1h 3m via I 81 and State Route 3, with a fuel budget near $7 and enough daylight to finish in a day. This trip stays within New York, connecting two points in the Northeast region. It's a straightforward drive, mostly on major roadways, making it a convenient option for a short excursion. You'll find it's a quick hop, perfect for a day trip or an easy addition to a longer itinerary.
Main Roads
Road
Distance
Duration
I 81
21.1 mi
24m
State Route 3
6.4 mi
9m
I 781
4 mi
4m
US 11
2.9 mi
3m
Fort Drum Road
2.8 mi
3m
Great Bend Road
2.3 mi
3m
County Road 100
1.8 mi
4m
West End Avenue
0.7 mi
<1m
Longest stretch:
I 81
— 21.1 mi, about 24m
Traffic on I-81
Hour-of-day weekday pattern from 8 FHWA count stations on your route.
Peak
4 PM
~377 veh/hr typical
· worst 563
Quietest
1 AM
~16 veh/hr
Peak-to-quiet ratio
23.6×
busier at peak than in the quiet hours
12a6anoon6p11p
Averaged across 48 weeks of 2023 FHWA Travel Monitoring Analysis System data. Weekday hours only (Mon–Fri).
Turn-by-Turn Driving Directions
Step-by-step road directions between Carthage, NY and Thousand Island Park, NY.
1
Start on NY 126
0.1 mi·17 sec·State Street
2
Turn left onto NY 3
0.5 mi·40 sec·North School Street
3
Continue on NY 3
0.7 mi·59 sec·West End Avenue
4
Continue on NY 3
6.4 mi·9 min·State Route 3
5
Turn right onto NY 26
230 ft·5 sec·Martin Street Road
6
Continue on NY 26
0.2 mi·25 sec·State Highway 26
7
Continue on NY 26
2.3 mi·3 min·Great Bend Road
8
Continue on NY 26
2.8 mi·3 min·Fort Drum Road
9
Turn left onto US 11
2.9 mi·3 min·US 11
10
Take the exit
0.3 mi·33 sec
Toward I 781 West
11
Continue on I 781
4.0 mi·4 min·I 781
12
Keep slight right at fork
0.3 mi·31 sec
Exit 1AToward I 81 North: Canada
13
Merge onto I 81
20 mi·22 min·I 81
14
Keep slight left at fork onto I 81
1.4 mi·2 min·I 81
15
Take the exit
0.2 mi·23 sec
Exit 51Toward Island State Parks
16
Turn right onto CR 191
0.5 mi·1 min·County Road 191
17
Turn right onto CR 100
217 ft·5 sec·Westminster Park Road
18
Continue on CR 100
0.5 mi·1 min·Thousand Island Park Road
19
Continue on CR 100
1.8 mi·4 min·County Road 100
20
Continue on Coast Avenue East
0.2 mi·36 sec·Coast Avenue East
21
Continue on Rainbow Street East
0.3 mi·1 min·Rainbow Street East
22
Arrive at destination
Rainbow Street West
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
The midpoint is around 22.5 miles from Carthage, NY, which is a good place for a longer meal and fuel stop.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
Heads-up: tricky spots
5 of 10
5 decision points cluster between mile 0.1 and 41.6 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
4
0.1 mi into trip|~0m in|NY 3 / North School Street
Turn left onto NY 3 / North School Street
Navigation decision point
4
15.9 mi into trip|~24m in
Take the exit toward I 781 West
Exit ramp - move to the correct lane early
Toward I 781 West
6
20.2 mi into trip|~28m in
Keep slight right at fork toward I 81 North: Canada
Highway fork - watch signs carefully
Exit 1A
Toward I 81 North: Canada
4
40.2 mi into trip|~52m in|I 81
Keep slight left at fork onto I 81
Highway fork - watch signs carefully
5
41.6 mi into trip|~54m in
Take the exit toward Island State Parks
Exit ramp - move to the correct lane early
Exit 51
Toward Island State Parks
Fuel & Cost
Regular Gas
$7.88 one way
$15.75 round trip
$4.45/gal25.4 MPG avg16 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.82
$8.54
$17.07
premium
$5.23
$9.27
$18.53
diesel
$6.18
$10.95
$21.89
No toll roads detected on this route.
Drive Cost (one way)
Fuel
$8
Estimated CO2 emission: 15.7 kg one way.
Prices: EIA weekly data, 2026-10-19.
Driving Electric?
About $5 in charging
· 0 stops
· 69% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
13.5
0
$4.73
$2.16
Efficient EV
11.3
0
$3.94
$1.80
EV Truck/SUV
18
0
$6.30
$2.88
Gas CO2
16 kg
EV CO2
5 kg (69% less)
This trip is well within single-charge range for most EVs. No charging stops needed if you start fully charged.
DC fast charging avg $0.35/kWh. Home charging avg $0.16/kWh. US grid CO2: 0.39 kg/kWh.
Travel Intel
Current conditions at both ends of the drive.
Forecast as of Oct 18, 2026
Origin
Carthage, NY
Evening
in Carthage on Tuesday
Local time
5:37 PM
EDT
Current temp
27°F
Patchy Fog
SE 6 mph1% chanceLive forecast
Freeze Warning
Freeze Warning issued October 18 at 2:22AM EDT until October 18 at 9:00AM EDT by NWS Upton NY
Freeze Warning
Freeze Warning issued October 17 at 12:34PM EDT until October 18 at 9:00AM EDT by NWS Buffalo NY
Destination
Thousand Island Park, NY
Evening
in Thousand Island Park on Tuesday
Local time
5:37 PM
EDT
Current temp
31°F
Mostly Clear
S 9 mph1% chanceLive forecast
Freeze Warning
Freeze Warning issued October 18 at 2:22AM EDT until October 18 at 9:00AM EDT by NWS Upton NY
Freeze Warning
Freeze Warning issued October 17 at 12:34PM EDT until October 18 at 9:00AM EDT by NWS Buffalo NY
60°F
Watertown, NY
23 mi in
Time zone
Same local time
Origin and destination are on the same clock, so arrival timing is easier to judge at a glance.
Temperature spread
4 degrees warmer at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
1h 3m on the road
The weather snapshot is not static. If you are leaving later, give both cities one more quick forecast check before departure.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
More Details
What kind of drive is this?
This drive is predominantly highway, with 77% of the route utilizing major roads. You'll experience a longest stretch of 21.1 miles on I 81. After leaving the interstate, you'll transition to surface roads like State Route 3. Expect a significant portion of your time on the highway, which means consistent speed limits for most of the drive.
77% highway — fuel and pacing are the main things to plan.
22 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 21.1 mi on I 81.
How Hard Is This Drive?
6/10
This is a straightforward highway drive that stays mostly on I 81 and State Route 3. You will hit about 10 points where you need to pay attention to lane position or signs. The trickiest moment comes around 0.1 miles in near NY 3 / North School Street.
Driving Effort6/10
Moderate - straightforward overall, but long enough or busy enough to require pacing
Balances navigation complexity with total wheel time.
This drive requires moderate attention. Across 45 miles you will encounter 10 spots where lane choice or exit timing matters. Not difficult for experienced highway drivers, but worth previewing the tricky sections before you go.
Where does it get tricky?
The main spots that need attention: at 0.1 miles (NY 3 / North School Street): Navigation decision point; at 15.9 miles: Exit ramp - move to the correct lane early; at 20.2 miles: Highway fork - watch signs carefully.
Elevation Profile
Mostly flat terrain
769 ft271 ft
Total Climb
140 ft
Total Descent
638 ft
Highest Point
769 ft
Elevation Range
499 ft
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
On the drive from Carthage, NY to Thousand Island Park, NY, road signs begin pointing toward Island State Parks along the way.
Doable as a same-day drive at 1h 3m. Total distance: 45 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Solo Traveler
1h 3m drive, comfortable solo distance.
EV Driver
0 DC fast chargers along the route. Coverage: unknown.
First-Time Driver
Mostly highway driving (77%). Some complex stretches to watch for.
Frequently Asked Questions
The longest stretch is about 21.1 miles on I 81. The full list of main roads is in the Roads section above.
Yes — we found about 3 rest areas or service plazas within a short detour of the route (from OpenStreetMap). See the Rest Stops tab under Nearby Places for locations and mile markers. Plan to stretch, use the bathroom, and top off fluids every 2–3 hours on longer drives.
It helps. This route has a higher-than-average number of complex decision points, which get harder in the dark. If the last hour of the trip is on surface roads or mountain grades, aim to arrive at Thousand Island Park, NY before sunset when you can. Check the Trip Plan for departure windows that land you in daylight.
Yes. At under 2 hours behind the wheel, this works well for families — plan one quick stop if you have younger kids.
The main spots that need attention: at 0.1 miles (NY 3 / North School Street): Navigation decision point; at 15.9 miles: Exit ramp - move to the correct lane early; at 20.2 miles: Highway fork - watch signs carefully.
Yes. A round trip is manageable in a single day if you plan a break at Thousand Island Park, NY before heading back.
