California
Distance from Oceanside to San Diego
Straight-line distance
30.0mi
Oceanside, CA and San Diego, CA are 30.0 miles (48.3 km) apart in a straight line. From Oceanside, the shortest path starts out heading SSE (161°).
- kilometers
- 48.3
- nautical miles
- 26.1
- heading from Oceanside
- 161° SSE
- heading from San Diego
- 341° NNW
Orange line: great-circle path · ring: midpoint · thin lines: county borders
How far Oceanside is from San Diego
The great-circle distance between the Census internal points of Oceanside and San Diego is 30.0 miles, 48.3 km or 26.1 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 30.0 miles, practically the same at this range.
Measurements
- Miles
- 30.0
- Kilometers
- 48.3
- Nautical miles
- 26.1
- Bearing from Oceanside
- 160.7° SSE
- Bearing arriving at San Diego
- 160.8°
- Bearing from San Diego
- 340.8° NNW
Halfway between Oceanside and San Diego
The great-circle midpoint is at 33.019829, -117.220752 (33°01'11.38"N 117°13'14.71"W). The nearest incorporated place of 1,000 or more people is Solana Beach, CA, with 12,868 residents, 2.9 miles from the midpoint. To find towns near the midpoint of any two places, use the halfway tool.
Time zones and daylight
Both use America/Los_Angeles, so there is no time difference. On June 21, Oceanside gets 14 h 21 min of daylight and San Diego 14 h 19 min; on December 21, 9 h 57 min and 9 h 59 min. The two sit at nearly the same latitude, so their day lengths match closely all year.
Population compared
San Diego has 8.2 times the population of Oceanside. From July 2020 to July 2024, Oceanside changed by -1.8% and San Diego by +1.4%. Both are in California.
- 01Oceanside, CA170,941 (-1.8%)
- 02San Diego, CA1,404,452 (+1.4%)
Questions people ask
How far is Oceanside from San Diego?
30.0 miles, 48.3 km or 26.1 nautical miles along the great circle between the two Census internal points. Road distance is longer.
Which direction is San Diego from Oceanside?
SSE. The great-circle path leaves Oceanside on a bearing of 160.7° and arrives at San Diego on 160.8°. The return trip starts on 340.8°.
What is halfway between Oceanside and San Diego?
The midpoint is at 33.019829, -117.220752. The nearest incorporated place of 1,000+ is Solana Beach, CA, 2.9 miles from it.
Is there a time difference between Oceanside and San Diego?
Both use America/Los_Angeles, so there is no time difference.
Which is bigger, Oceanside or San Diego?
San Diego, with 1,404,452 residents in July 2024 against 170,941 for Oceanside, 8.2 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.
- 01Census 2024 Gazetteer, places
- 02Census Vintage 2024 subcounty population estimates
- 03SunCalc library (Vladimir Agafonkin), algorithms after Jean Meeus
- 04IANA time zone database (clock times and daylight saving rules)
How every number is computed: methodology. Spotted a wrong figure? Report an error.