ICMP RTT measurement from São Paulo, Brazil to Hong Kong, Hong Kong: average 273.5 ms, min/max, jitter, packet loss, and route distance.

🇧🇷 São Paulo, Brazil (GRU) → 🇭🇰 Hong Kong (HKG)

Measurement round: 2026-08-16T04:07:28Z.

For the 2026-08-16T04:07:28Z round, ICMP echo probes from São Paulo to Hong Kong averaged 273.5 ms, with a minimum of 267.18 ms and a maximum of 286.64 ms. The 50-sample run stayed tight: standard deviation was 4.57 ms, jitter was 4.53 ms, and packet loss was 0%.

The great-circle distance between the two cities is 18,060 km, corresponding to a vacuum one-way floor of 120.48 ms and an approximate fiber floor of 176.86 ms. The observed round-trip time is 1.55 times that fiber floor, or about 64.7% fiber efficiency.

This route ranked 16th of 19 outbound paths measured from São Paulo in this round, placing it in the higher-latency tier. Its standard deviation is about 1.7% of the average, below the 3.28% median stdev-to-average ratio for those 19 paths, so the path is stable despite the high baseline latency.

Latency Summary

Metric	Value
RTT	273.5 ms
Jitter	4.53 ms
Packet Loss	0%
Standard Fiber Floor	176.86 ms
Fiber Efficiency	64.7%
Latency Tier	High
Source Region	South America
Destination Region	Asia Pacific

Ping Measurement Series

The chart below renders the 50-sample ICMP echo measurement round for this route; an accessible table of every sample is included with the chart.

Ping series: GRU → HKG

50 ICMP echo samples at 100 ms intervals · round 2026-08-16T04:07:28Z · avg 273.5 ± 0.65 ms (SE)

Sample distribution: box = interquartile range (270.2–276.1 ms), median 272.2 ms · whiskers = min–max · diamond = round average · each dot is one measured sample.

How to read this chart

The shaded band spans the measured minimum to maximum RTT of all samples collected up to that point, and the thin line traces the running average. The final position therefore matches the round statistics exactly — the band only widens when a new extreme sample arrives.

The dashed line is the round average, and the shaded band at the bottom is the theoretical fiber-optic floor (176.9 ms) for this route.

Full 50-sample dataset

Seq	Offset (ms)	RTT (ms)
1	0	276.37
2	100	270.66
3	200	270.25
4	300	271.51
5	400	283.78
6	500	273.09
7	600	277.95
8	700	270.75
9	800	272.30
10	900	270.21
11	1000	268.02
12	1100	272.07
13	1200	268.73
14	1300	267.90
15	1400	267.18
16	1500	271.76
17	1600	281.07
18	1700	275.22
19	1800	282.30
20	1900	272.26
21	2000	280.50
22	2100	273.43
23	2200	271.85
24	2300	273.45
25	2400	286.64
26	2500	282.14
27	2600	273.39
28	2700	277.42
29	2800	280.24
30	2900	273.65
31	3000	270.64
32	3100	273.28
33	3200	269.40
34	3300	269.51
35	3400	269.86
36	3500	277.34
37	3600	270.56
38	3700	268.06
39	3800	267.74
40	3900	276.72
41	4000	270.19
42	4100	270.02
43	4200	271.34
44	4300	272.17
45	4400	273.01
46	4500	271.84
47	4600	279.63
48	4700	274.06
49	4800	269.40
50	4900	274.14

Download This Route's Data

This route's measurement round is published as open data (CC BY 4.0) in CSV, JSON, and YAML. See About This Measurement for citation guidance.

Download this dataset

Per-route ICMP ping series, released under CC BY 4.0. Uncompressed plain text — no decompression step needed.

CSV JSON YAML Full dataset

Theoretical Fiber Latency

The public physical reference uses the GeoNames city centres for São Paulo (-23.54750, -46.63611) and Hong Kong (22.27832, 114.17469). It does not disclose either facility address.

Physical Reference	Value
WGS-84 geodesic distance	18,060 km
Vacuum RTT floor	120.48 ms
Standard fiber RTT floor ( $n_g=1.4679$ )	176.86 ms
Low-latency fiber material floor	176.15 ms
Engineering floor (5% path allowance)	185.72 ms
Research 1.33× mapped-fiber reference	235.22 ms
Estimated unamplified path loss	3792.6 dB
Transparent optical spans / inline amplifiers	238 / 237
Published RTT inflation over fiber floor	1.55×

Attenuation is used to estimate the number of 80 km optical spans; it does not directly slow light. See the full theoretical fiber latency, GeoNames, attenuation, and amplifier methodology.

Stability & Trend

The current measurement round (2026-08-16T04:07:28Z) collected 50 ICMP echo samples on this route. Distribution statistics from that round:

Round Statistic	Value
Minimum RTT	267.18 ms
Average RTT	273.5 ms
Maximum RTT	286.64 ms
Standard deviation	4.57 ms
Stdev / average	1.7%

RTT trend

Estimated route stability across the selected time window.

Average: 273.8 ms
Minimum: 270.8 ms
Maximum: 276.4 ms
Average loss: 0.01%

Route Context

Departure PoP: São Paulo (GRU)
Destination PoP: Hong Kong (HKG)
Region overview: South America → Asia Pacific
Full global matrix: Backbone Latency Matrix
Physical methodology: Theoretical Fiber Latency

Reverse direction

Hong Kong to São Paulo latency and RTT — 287.6 ms

Fastest routes departing São Paulo (GRU)

São Paulo to Miami latency and RTT — 74 ms
São Paulo to New York latency and RTT — 122 ms
São Paulo to Ashburn latency and RTT — 128 ms
São Paulo to Los Angeles latency and RTT — 130.8 ms
São Paulo to Seattle latency and RTT — 155.9 ms

Fastest routes arriving at Hong Kong (HKG)

Taipei to Hong Kong latency and RTT — 15.5 ms
Singapore to Hong Kong latency and RTT — 30.8 ms
Tokyo to Hong Kong latency and RTT — 44.8 ms
Moscow to Hong Kong latency and RTT — 118.6 ms
Seattle to Hong Kong latency and RTT — 130.4 ms

Same corridor (South America → Asia Pacific)

São Paulo to Tokyo latency and RTT — 230.3 ms
São Paulo to Taipei latency and RTT — 259.1 ms
São Paulo to Sydney latency and RTT — 265.5 ms

About This Measurement

Published RTT reflects best-case backbone path behavior measured with ICMP echo probes between PoPs. End-user latency also depends on local access networks, congestion, routing policy, and traffic engineering. None of these values is an SLA.

The measurement round behind this page is published as open data under CC BY 4.0 in the Hats Network latency dataset. Per-pair files are available at /opendata/latency/latest/pairs/gru-hkg.pings.{csv,json,yaml}. When citing, include the route, the measurement round timestamp, and the dataset version — for example: "Hats Network latency dataset, São Paulo → Hong Kong round 2026-08-16T04:07:28Z, CC BY 4.0".

Data auto-generated on August 16, 2026. Explore the full interactive latency matrix or browse more city-pair routes.

São Paulo, Brazil → Hong Kong RTT