Illinois to Indiana

Distance from Naperville to South Bend

Straight-line distance

97.8mi

Naperville, IL and South Bend, IN are 97.8 miles (157.4 km) apart in a straight line. From Naperville, the shortest path starts out heading E (92°).

kilometers
157.4
nautical miles
85.0
heading from Naperville
92° E
heading from South Bend
274° W
NapervilleSouth Bend

Orange line: great-circle path · ring: midpoint · thin lines: county borders

How far Naperville is from South Bend

The great-circle distance between the Census internal points of Naperville and South Bend is 97.8 miles, 157.4 km or 85.0 nautical miles. That is the shortest path over the Earth's surface, computed with the haversine formula on a sphere with the mean Earth radius, 6,371.0 km. A course held on one compass bearing (a rhumb line) would be 97.8 miles, practically the same at this range.

Measurements

Miles
97.8
Kilometers
157.4
Nautical miles
85.0
Bearing from Naperville
92.3° E
Bearing arriving at South Bend
93.6°
Bearing from South Bend
273.6° W

Halfway between Naperville and South Bend

The great-circle midpoint is at 41.716784, -87.214865 (41°43'0.42"N 87°12'53.52"W). The nearest incorporated place of 1,000 or more people is Ogden Dunes, IN, with 1,172 residents, 6.2 miles from the midpoint. To find towns near the midpoint of any two places, use the halfway tool.

Time zones and daylight

Naperville uses America/Chicago and South Bend uses America/Indiana/Indianapolis; South Bend is 1 hour ahead all year. On June 21, Naperville gets 15 h 13 min of daylight and South Bend 15 h 12 min; on December 21, 9 h 09 min and 9 h 09 min. The two sit at nearly the same latitude, so their day lengths match closely all year.

Population compared

Naperville has 1.5 times the population of South Bend. From July 2020 to July 2024, Naperville changed by +2.5% and South Bend by +0.4%. The trip crosses from Illinois into Indiana.

  1. 01Naperville, IL153,124 (+2.5%)
  2. 02South Bend, IN103,713 (+0.4%)
July 1, 2024 population and change since July 2020, Census Vintage 2024.

Questions people ask

How far is Naperville from South Bend?

97.8 miles, 157.4 km or 85.0 nautical miles along the great circle between the two Census internal points. Road distance is longer.

Which direction is South Bend from Naperville?

E. The great-circle path leaves Naperville on a bearing of 92.3° and arrives at South Bend on 93.6°. The return trip starts on 273.6°.

What is halfway between Naperville and South Bend?

The midpoint is at 41.716784, -87.214865. The nearest incorporated place of 1,000+ is Ogden Dunes, IN, 6.2 miles from it.

Is there a time difference between Naperville and South Bend?

Naperville uses America/Chicago and South Bend uses America/Indiana/Indianapolis; South Bend is 1 hour ahead all year.

Which is bigger, Naperville or South Bend?

Naperville, with 153,124 residents in July 2024 against 103,713 for South Bend, 1.5 times as many.

Sources and data as of

Data as of: Census 2024 Gazetteer internal points and Vintage 2024 estimates; time zones from Open-Meteo.

  1. 01Census 2024 Gazetteer, places
  2. 02Census Vintage 2024 subcounty population estimates
  3. 03SunCalc library (Vladimir Agafonkin), algorithms after Jean Meeus
  4. 04IANA time zone database (clock times and daylight saving rules)

How every number is computed: methodology. Spotted a wrong figure? Report an error.