Explore Sydney, Australia to São Paulo, Brazil ICMP RTT, jitter, packet loss and fiber latency limits on the AS203314 network.

🇦🇺 Sydney, Australia (SYD) → 🇧🇷 São Paulo, Brazil (GRU)

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

Sydney to São Paulo averaged 296.7 ms, compared with a 131 ms city-centre fiber reference. The difference cannot be assigned to a particular cable or carrier from RTT alone.

Standard deviation was 13.03 ms, or 4.4% of the average. This describes variation within the sample without identifying its cause.

Latency Summary

Metric	Value
RTT	296.7 ms
Jitter	10.12 ms
Packet Loss	0%
Standard Fiber Floor	131 ms
Fiber Efficiency	44.2%
Latency Tier	High
Source Region	Asia Pacific
Destination Region	South America

Ping Measurement Series

50 ICMP echo probes were recorded in this round. Individual replies and their distribution are shown below.

Ping series: SYD → GRU

50 ICMP echo samples at 100 ms intervals · round 2026-08-16T04:07:28Z · avg 296.7 ± 1.84 ms (SE)

Sample distribution: box = interquartile range (287.1–302.5 ms), median 293.7 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 (131.0 ms) for this route.

Full 50-sample dataset

Seq	Offset (ms)	RTT (ms)
1	0	279.16
2	100	278.26
3	200	307.62
4	300	295.87
5	400	296.32
6	500	291.97
7	600	290.88
8	700	298.64
9	800	294.05
10	900	287.69
11	1000	295.53
12	1100	286.38
13	1200	282.24
14	1300	294.88
15	1400	286.15
16	1500	289.10
17	1600	302.28
18	1700	287.04
19	1800	291.76
20	1900	304.22
21	2000	298.15
22	2100	286.40
23	2200	288.66
24	2300	286.59
25	2400	314.60
26	2500	327.03
27	2600	303.87
28	2700	321.31
29	2800	304.31
30	2900	288.23
31	3000	286.63
32	3100	294.38
33	3200	283.48
34	3300	287.09
35	3400	285.68
36	3500	285.78
37	3600	307.20
38	3700	292.87
39	3800	295.06
40	3900	302.58
41	4000	289.18
42	4100	293.43
43	4200	288.11
44	4300	284.60
45	4400	300.10
46	4500	321.12
47	4600	324.23
48	4700	318.89
49	4800	298.13
50	4900	337.27

Download This Route's Data

Download the probe round as CSV, JSON or YAML under CC BY 4.0. Citation details include the route and round timestamp.

CSV JSON YAML Full dataset

Theoretical Fiber Latency

The propagation model uses public city-centre coordinates from GeoNames: Sydney (-33.86785, 151.20732) and São Paulo (-23.54750, -46.63611). These are not facility coordinates or a surveyed cable path.

Physical Reference	Value
WGS-84 geodesic distance	13,377 km
Vacuum RTT floor	89.24 ms
Standard fiber RTT floor ( $n_g=1.4679$ )	131 ms
Low-latency fiber material floor	130.47 ms
Engineering floor (5% path allowance)	137.57 ms
Research 1.33× mapped-fiber reference	174.23 ms
Estimated unamplified path loss	2809.2 dB
Transparent optical spans / inline amplifiers	176 / 175
Published RTT inflation over fiber floor	2.26×

The span count assumes 80 km optical spans. Attenuation is a power-loss term, not a propagation delay. See the model assumptions and equations.

Stability & Trend

Statistics from the same 50 replies. They describe this probe round, not continuous historical monitoring.

Round Statistic	Value
Minimum RTT	278.26 ms
Average RTT	296.7 ms
Maximum RTT	337.27 ms
Standard deviation	13.03 ms
Stdev / average	4.4%

Estimated RTT trend

Modeled comparison, not historical probe measurements.

Average: 296.7 ms
Minimum: 294.7 ms
Maximum: 299.7 ms
Average loss: 0.03%

Route Context

Departure PoP: Sydney (SYD)
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 Sydney latency and RTT: 265.5 ms

Fastest routes departing Sydney (SYD)

Sydney to Melbourne latency and RTT: 9.8 ms
Sydney to Singapore latency and RTT: 94.5 ms
Sydney to Tokyo latency and RTT: 101.3 ms
Sydney to Taipei latency and RTT: 131.7 ms
Sydney to Hong Kong latency and RTT: 135.7 ms

Fastest routes arriving at São Paulo (GRU)

Ashburn to São Paulo latency and RTT: 101.4 ms
New York to São Paulo latency and RTT: 106.9 ms
Miami to São Paulo latency and RTT: 128.7 ms
Los Angeles to São Paulo latency and RTT: 131.3 ms
Seattle to São Paulo latency and RTT: 155.7 ms

Same corridor (Asia Pacific → South America)

Tokyo to São Paulo latency and RTT: 230.5 ms
Taipei to São Paulo latency and RTT: 273 ms
Hong Kong to São Paulo latency and RTT: 287.6 ms

About This Measurement

These ICMP measurements cover the two backbone endpoints. Access networks, routing policy and load can change an end user's result. A probe round is not an SLA.

The underlying replies are available under CC BY 4.0 in the Hats Network latency dataset. Per-pair files are available at /opendata/latency/latest/pairs/syd-gru.pings.{csv,json,yaml}. Cite the route, round timestamp and dataset version. Example: "Hats Network latency dataset, Sydney → São Paulo round 2026-08-16T04:07:28Z, CC BY 4.0".

Round published August 16, 2026. See the full interactive latency matrix or browse more city-pair routes.

Sydney, Australia → São Paulo, Brazil RTT