Griswold to Koshkonong is 36.6 miles and takes about 1h 5m via MO 142, US 63, and East Walnut Street, with a fuel budget near $6 and enough daylight to finish in a day. This short trip stays within Missouri, moving from the Midwest region to another part of the Midwest. Expect a drive that's mostly on highways, making it a straightforward and efficient connection between these two points. It's a good option if you need to get from Griswold to Koshkonong quickly without a lot of fuss.
Main Roads
Road
Distance
Duration
MO 142
17.7 mi
31m
US 63
8.6 mi
10m
East Walnut Street
5.8 mi
10m
MO UU
3.2 mi
7m
County Road 286
1.2 mi
4m
Diggins Street
0.1 mi
<1m
Longest stretch:
MO 142
— 17.7 mi, about 31m
Turn-by-Turn Driving Directions
Step-by-step road directions between Griswold, MO and Koshkonong, MO.
1
Start on County Road 286
1.2 mi·4 min·County Road 286
2
Continue on MO UU
3.2 mi·7 min·MO UU
3
Turn left onto MO 142
5.8 mi·10 min·East Walnut Street
4
Turn straight onto MO 142
0.5 mi·51 sec·MO 142
5
Keep slight right at fork onto MO 142
17 mi·30 min·MO 142
6
Turn right onto US 63
8.6 mi·10 min·US 63
7
Turn left onto Diggins Street
0.1 mi·24 sec·Diggins Street
8
Arrive at destination
Diggins Street
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
The midpoint is around 18.3 miles from Griswold, MO, 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
3 of 3
3 decision points cluster between mile 4.4 and 36.5 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
3
4.4 mi into trip|~12m in|MO 142 / East Walnut Street
Turn left onto MO 142 / East Walnut Street
Navigation decision point
4
10.7 mi into trip|~23m in|MO 142
Keep slight right at fork onto MO 142
Highway fork - watch signs carefully
4
36.5 mi into trip|~1h 4m in|Diggins Street
Turn left onto Diggins Street
Navigation decision point
Fuel & Cost
Regular Gas
$6.09 one way
$12.17 round trip
$4.22/gal25.4 MPG avg13 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.60
$6.63
$13.26
premium
$5.18
$7.47
$14.94
diesel
$5.35
$7.71
$15.42
No toll roads detected on this route.
Drive Cost (one way)
Fuel
$6
Estimated CO2 emission: 12.8 kg one way.
Prices: EIA weekly data, 2026-06-01.
Driving Electric?
About $4 in charging
· 0 stops
· 69% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
11
0
$3.84
$1.76
Efficient EV
9.2
0
$3.20
$1.46
EV Truck/SUV
14.6
0
$5.12
$2.34
Gas CO2
13 kg
EV CO2
4 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 May 21, 2026
Origin
Griswold, MO
Evening
in Griswold on Wednesday
Local time
7:59 PM
CDT
Current temp
76°F
Chance Rain Showers
NE 7 mph11% chanceLive forecast
Flood Warning
Flood Warning issued May 21 at 12:01PM CDT until May 26 at 1:00AM CDT by NWS St Louis MO
Flood Warning
Flood Warning issued May 21 at 12:01PM CDT until May 23 at 2:32AM CDT by NWS St Louis MO
Destination
Koshkonong, MO
Evening
in Koshkonong on Wednesday
Local time
7:59 PM
CDT
Current temp
75°F
Chance Rain Showers
NE 6 mph11% chanceLive forecast
Flood Warning
Flood Warning issued May 21 at 12:01PM CDT until May 26 at 1:00AM CDT by NWS St Louis MO
Flood Warning
Flood Warning issued May 21 at 12:01PM CDT until May 23 at 2:32AM CDT by NWS St Louis MO
68°F
Alton, MO
18 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
1 degrees cooler at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
1h 5m 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 mostly highway, with 72% of the route on roads like MO 142 and US 63. You'll experience a continuous stretch of 17.7 miles on MO 142 before transitioning to other main roads. The shift from highway cruising to surface streets will happen as you approach your destination, likely involving East Walnut Street for the final leg.
72% highway — fuel and pacing are the main things to plan.
8 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 17.7 mi on MO 142.
How Hard Is This Drive?
2/10
This is a straightforward highway drive that stays mostly on MO 142 and US 63. Navigation is very simple - set it and forget it for most of the drive. The trickiest moment comes around 4.4 miles in near MO 142 / East Walnut Street.
Driving Effort2/10
Very easy - short and simple to drive
Balances navigation complexity with total wheel time.
The drive from Griswold, MO to Koshkonong, MO is easy. At 1h 5m with 72% highway, most drivers will find it relaxed and low-stress.
Where does it get tricky?
The main spots that need attention: at 4.4 miles (MO 142 / East Walnut Street): Navigation decision point; at 10.7 miles (MO 142): Highway fork - watch signs carefully; at 36.5 miles (Diggins Street): Navigation decision point.
Elevation Profile
Mostly flat terrain
976 ft479 ft
Total Climb
874 ft
Total Descent
382 ft
Highest Point
976 ft
~36.6 mi in
Elevation Range
497 ft
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 1h 5m. Total distance: 36.6 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Solo Traveler
1h 5m drive, comfortable solo distance.
EV Driver
0 DC fast chargers along the route. Coverage: unknown.
The longest stretch is about 17.7 miles on MO 142. The full list of main roads is in the Roads section above.
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 4.4 miles (MO 142 / East Walnut Street): Navigation decision point; at 10.7 miles (MO 142): Highway fork - watch signs carefully; at 36.5 miles (Diggins Street): Navigation decision point.
Yes. A round trip is manageable in a single day if you plan a break at Koshkonong, MO before heading back.
