GCP us-south1 latency

Dallas. How long a round trip from your machine to this region takes — and how much of that distance alone demands.

The region

Cloud	Google Cloud
Region code	us-south1
Region name	Dallas
Datacentre city	Dallas, Texas, US
Coordinates	32.78, -96.80
Published IPv4 prefixes	16
Probe endpoint	https://storage.us-south1.rep.googleapis.com/
Probe style	timed blind — the endpoint sends no CORS headers
Verification	Probed on this region’s dedicated regional storage endpoint — one address per region, no wildcard DNS — with identity confirmed by a single gcping call per sweep. The recorded range-check predates this endpoint and covered an earlier host. Checked 2026-08-21.

Coordinates are the real datacentre city rather than the marketing region name, because they feed the distance maths below.

Distance, and the floor it sets

Light in fibre covers about 100 km per millisecond of round trip. These are the great-circle distances to Dallas, Texas and the latency no network can beat — not a measurement, a limit. What you actually measure is this plus routing.

From	Distance	Floor
New York	2,205 km	22 ms
Los Angeles	1,992 km	20 ms
São Paulo	8,217 km	82 ms
London	7,641 km	76 ms
Frankfurt	8,256 km	83 ms
Johannesburg	14,686 km	147 ms
Dubai	12,922 km	129 ms
Mumbai	14,145 km	141 ms
Singapore	15,646 km	156 ms
Tokyo	10,401 km	104 ms
Sydney	13,819 km	138 ms

Other regions in this metro

Within 75 km of Dallas, Texas — near enough that distance sets no meaningful floor between them. When several sit in one city, the fastest is the city’s real floor; a slower neighbour is usually the endpoint’s own server time.

Measure it yourself

These figures are geometry. Your own round trip to us-south1 depends on your connection and the route it takes — open the instrument, pick GCP, and sweep. Every region is timed from your browser against the endpoint listed above, and the result is split into the part physics demands and the part the network added.

See every GCP region on the GCP latency page.