Hong Kong to São Paulo ping and RTT: 298.4 ms, 9.16 ms jitter, 176.86 ms fiber floor, and 59.3% efficiency across AS203314. Updated 2026-08-09.

🇭🇰 This page compares the published ping and round-trip time (RTT) from Hong Kong (HKG) to 🇧🇷 São Paulo (GRU) with vacuum and optical-fiber physical limits.

As of August 9, 2026, the Hong Kong → São Paulo route on Hats Network averages 298.4 ms RTT across a 50-sample daily ICMP echo measurement round, 1.69× the theoretical fiber-floor limit of 176.86 ms.

Among the 19 measured routes departing Hong Kong, this route ranks 18th fastest by average RTT.

With a stdev-to-average ratio of 3.3%, this route sits close to the network-wide stability median of 3.4%. Across the round, per-probe RTT ranged from 286.82 ms to 328.97 ms with a standard deviation of 9.96 ms.

Latency Summary

Metric	Value
RTT	298.4 ms
Jitter	9.16 ms
Packet Loss	0%
Standard Fiber Floor	176.86 ms
Fiber Efficiency	59.3%
Latency Tier	High
Source Region	Asia Pacific
Destination Region	South America

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: HKG → GRU

50 ICMP echo samples at 100 ms intervals · round 2026-08-09 · avg 298.4 ± 1.41 ms (SE)

Sample distribution: box = interquartile range (291.0–305.0 ms), median 294.8 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	294.00
2	100	290.84
3	200	286.82
4	300	291.62
5	400	305.22
6	500	307.48
7	600	320.39
8	700	297.92
9	800	296.31
10	900	292.63
11	1000	287.84
12	1100	287.49
13	1200	288.63
14	1300	319.08
15	1400	307.77
16	1500	307.55
17	1600	293.37
18	1700	328.97
19	1800	303.39
20	1900	293.80
21	2000	287.98
22	2100	288.81
23	2200	302.68
24	2300	302.94
25	2400	293.69
26	2500	289.19
27	2600	294.02
28	2700	288.03
29	2800	293.80
30	2900	302.55
31	3000	321.16
32	3100	304.86
33	3200	291.97
34	3300	287.65
35	3400	291.41
36	3500	298.26
37	3600	313.12
38	3700	297.92
39	3800	309.26
40	3900	295.63
41	4000	290.31
42	4100	291.77
43	4200	291.47
44	4300	289.19
45	4400	308.01
46	4500	305.03
47	4600	295.79
48	4700	289.96
49	4800	305.23
50	4900	297.19

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 Hong Kong (22.27832, 114.17469) and São Paulo (-23.54750, -46.63611). 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	1.69×

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 (2026-08-09) collected 50 ICMP echo samples on this route. Distribution statistics from that round:

Round Statistic	Value
Minimum RTT	286.82 ms
Average RTT	298.4 ms
Maximum RTT	328.97 ms
Standard deviation	9.96 ms
Stdev / average	3.3%

RTT trend

Estimated route stability across the selected time window.

Average: 298.3 ms
Minimum: 295.8 ms
Maximum: 300.4 ms
Average loss: 0.03%

Route Context

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

Reverse direction

São Paulo to Hong Kong latency and RTT — 273.3 ms

Fastest routes departing Hong Kong (HKG)

Hong Kong to Taipei latency and RTT — 14.8 ms
Hong Kong to Singapore latency and RTT — 31.6 ms
Hong Kong to Tokyo latency and RTT — 44.9 ms
Hong Kong to Moscow latency and RTT — 119.5 ms
Hong Kong to Melbourne latency and RTT — 126.8 ms

Fastest routes arriving at São Paulo (GRU)

Ashburn to São Paulo latency and RTT — 101.9 ms
New York to São Paulo latency and RTT — 107.2 ms
Miami to São Paulo latency and RTT — 128.9 ms
Los Angeles to São Paulo latency and RTT — 131.5 ms
Seattle to São Paulo latency and RTT — 155.8 ms

Same corridor (Asia Pacific → South America)

Tokyo to São Paulo latency and RTT — 228.7 ms
Taipei to São Paulo latency and RTT — 283.4 ms
Sydney to São Paulo latency and RTT — 293.8 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/hkg-gru.pings.{csv,json,yaml}. When citing, include the route, the measurement round date, and the dataset version — for example: "Hats Network latency dataset, Hong Kong → São Paulo round 2026-08-09, CC BY 4.0".

Data auto-generated on August 9, 2026. Explore the full interactive latency matrix or browse more city-pair routes.

Hong Kong to São Paulo Latency, Ping & RTT | AS203314