Sydney, Australia to Los Angeles, USA ICMP RTT route data for round 2026-08-16T04:07:28Z: 50 samples, average 136.5 ms, max 143.81 ms, 0% packet loss.

🇦🇺 Sydney, Australia (SYD) → 🇺🇸 Los Angeles, USA (LAX)

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

During the 2026-08-16T04:07:28Z round, ICMP echo RTT between Sydney, Australia and Los Angeles, USA averaged 136.5 ms across 50 samples, with a minimum of 132.98 ms and a maximum of 143.81 ms. The 2.85 ms standard deviation and 2.5 ms jitter point to a stable path, and with packet loss at 0%, every probe in the round returned a response.

Across the 19 outbound routes measured in the same round, this Sydney-to-Los Angeles pairing ranked 6th by average RTT. Its sample variability is about 2.1% of the average, below the 3.28% median variability for those peers, so the route held a steadier latency profile than the typical route.

At a geodesic distance of 12,063.2 km, the route has a vacuum floor of 80.48 ms and an estimated fiber floor of 118.13 ms. The measured average is 1.16 times that fiber floor, an 86.5% fiber efficiency that leaves modest overhead for a trans-Pacific crossing.

Latency Summary

Metric	Value
RTT	136.5 ms
Jitter	2.5 ms
Packet Loss	0%
Standard Fiber Floor	118.13 ms
Fiber Efficiency	86.5%
Latency Tier	Good
Source Region	Asia Pacific
Destination Region	North 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: SYD → LAX

50 ICMP echo samples at 100 ms intervals · round 2026-08-16T04:07:28Z · avg 136.5 ± 0.40 ms (SE)

Sample distribution: box = interquartile range (134.4–137.8 ms), median 135.8 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 (118.1 ms) for this route.

Full 50-sample dataset

Seq	Offset (ms)	RTT (ms)
1	0	134.88
2	100	134.14
3	200	135.34
4	300	134.93
5	400	141.22
6	500	135.89
7	600	134.16
8	700	133.83
9	800	136.56
10	900	134.41
11	1000	135.72
12	1100	133.62
13	1200	140.63
14	1300	143.37
15	1400	138.82
16	1500	143.62
17	1600	139.27
18	1700	136.29
19	1800	137.87
20	1900	136.02
21	2000	133.69
22	2100	140.16
23	2200	136.46
24	2300	134.52
25	2400	135.92
26	2500	137.08
27	2600	137.19
28	2700	134.97
29	2800	135.63
30	2900	133.58
31	3000	135.26
32	3100	133.36
33	3200	143.81
34	3300	142.92
35	3400	136.17
36	3500	134.06
37	3600	132.98
38	3700	135.45
39	3800	136.18
40	3900	137.22
41	4000	134.40
42	4100	133.66
43	4200	133.04
44	4300	133.49
45	4400	137.56
46	4500	134.63
47	4600	135.50
48	4700	138.54
49	4800	137.92
50	4900	139.06

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 Sydney (-33.86785, 151.20732) and Los Angeles (34.05223, -118.24368). It does not disclose either facility address.

Physical Reference	Value
WGS-84 geodesic distance	12,063.2 km
Vacuum RTT floor	80.48 ms
Standard fiber RTT floor ( $n_g=1.4679$ )	118.13 ms
Low-latency fiber material floor	117.66 ms
Engineering floor (5% path allowance)	124.05 ms
Research 1.33× mapped-fiber reference	157.12 ms
Estimated unamplified path loss	2533.3 dB
Transparent optical spans / inline amplifiers	159 / 158
Published RTT inflation over fiber floor	1.16×

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	132.98 ms
Average RTT	136.5 ms
Maximum RTT	143.81 ms
Standard deviation	2.85 ms
Stdev / average	2.1%

RTT trend

Estimated route stability across the selected time window.

Average: 136.5 ms
Minimum: 135.3 ms
Maximum: 137.9 ms
Average loss: 0.01%

Route Context

Departure PoP: Sydney (SYD)
Destination PoP: Los Angeles (LAX)
Region overview: Asia Pacific → North America
Full global matrix: Backbone Latency Matrix
Physical methodology: Theoretical Fiber Latency

Reverse direction

Los Angeles to Sydney latency and RTT — 137.6 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 Los Angeles (LAX)

Seattle to Los Angeles latency and RTT — 25.9 ms
Miami to Los Angeles latency and RTT — 56.8 ms
New York to Los Angeles latency and RTT — 58.9 ms
Ashburn to Los Angeles latency and RTT — 60.7 ms
Tokyo to Los Angeles latency and RTT — 101.2 ms

Same corridor (Asia Pacific → North America)

Tokyo to Seattle latency and RTT — 84.8 ms
Taipei to Seattle latency and RTT — 115.8 ms
Hong Kong to Seattle latency and RTT — 131.6 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/syd-lax.pings.{csv,json,yaml}. When citing, include the route, the measurement round timestamp, and the dataset version — for example: "Hats Network latency dataset, Sydney → Los Angeles 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.

Sydney, Australia → Los Angeles, USA RTT