Ashburn to Sydney latency report: ICMP round-trip time, packet loss, jitter and distance analysis for the USA-Australia route.

🇺🇸 Ashburn, USA (IAD) → 🇦🇺 Sydney, Australia (SYD)

Measurement round: 2026-08-15T04:03:13Z.

During measurement round 2026-08-15T04:03:13Z, ICMP echo probes from Ashburn, USA to Sydney, Australia recorded an average round-trip time of 193.4 ms, with a minimum of 188.51 ms and a maximum of 211.93 ms over 50 samples, and no packets were lost.

The great-circle distance of 15,673.1 km puts the fiber-floor estimate at 153.48 ms, so the measured average is 1.26 times that floor, equivalent to 79.4% fiber efficiency. With a standard deviation of 4.42 ms and jitter of 4.05 ms, the route ran below the network's median variability of 3.08% of average RTT.

Ranked 16th of the 19 outbound routes in this round, this path sits near the physical limit for its distance. The combination of low jitter and loss-free samples makes Ashburn-to-Sydney a steady long-haul RTT profile despite the 193.4 ms average.

Latency Summary

Metric	Value
RTT	193.4 ms
Jitter	4.05 ms
Packet Loss	0%
Standard Fiber Floor	153.48 ms
Fiber Efficiency	79.4%
Latency Tier	Fair
Source Region	North 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: IAD → SYD

50 ICMP echo samples at 100 ms intervals · round 2026-08-15T04:03:13Z · avg 193.4 ± 0.63 ms (SE)

Sample distribution: box = interquartile range (190.3–195.2 ms), median 192.5 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 (153.5 ms) for this route.

Full 50-sample dataset

Seq	Offset (ms)	RTT (ms)
1	0	195.73
2	100	190.87
3	200	211.93
4	300	197.42
5	400	192.49
6	500	191.10
7	600	193.70
8	700	189.91
9	800	188.51
10	900	189.92
11	1000	203.84
12	1100	194.14
13	1200	199.91
14	1300	195.42
15	1400	193.05
16	1500	190.12
17	1600	188.59
18	1700	190.31
19	1800	189.66
20	1900	192.44
21	2000	193.79
22	2100	190.88
23	2200	190.50
24	2300	192.82
25	2400	190.00
26	2500	192.49
27	2600	198.87
28	2700	191.83
29	2800	201.21
30	2900	193.36
31	3000	194.38
32	3100	200.28
33	3200	198.43
34	3300	195.41
35	3400	190.62
36	3500	189.59
37	3600	188.96
38	3700	189.01
39	3800	191.11
40	3900	194.03
41	4000	195.19
42	4100	191.74
43	4200	189.52
44	4300	196.80
45	4400	192.66
46	4500	190.79
47	4600	192.05
48	4700	195.09
49	4800	190.38
50	4900	189.15

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 Ashburn (39.04372, -77.48749) and Sydney (-33.86785, 151.20732). It does not disclose either facility address.

Physical Reference	Value
WGS-84 geodesic distance	15,673.1 km
Vacuum RTT floor	104.56 ms
Standard fiber RTT floor ( $n_g=1.4679$ )	153.48 ms
Low-latency fiber material floor	152.87 ms
Engineering floor (5% path allowance)	161.18 ms
Research 1.33× mapped-fiber reference	204.13 ms
Estimated unamplified path loss	3291.4 dB
Transparent optical spans / inline amplifiers	206 / 205
Published RTT inflation over fiber floor	1.26×

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 (2026-08-15T04:03:13Z) collected 50 ICMP echo samples on this route. Distribution statistics from that round:

Round Statistic	Value
Minimum RTT	188.51 ms
Average RTT	193.4 ms
Maximum RTT	211.93 ms
Standard deviation	4.42 ms
Stdev / average	2.3%

RTT trend

Estimated route stability across the selected time window.

Average: 193.2 ms
Minimum: 191.7 ms
Maximum: 195.3 ms
Average loss: 0.03%

Route Context

Departure PoP: Ashburn (IAD)
Destination PoP: Sydney (SYD)
Region overview: North America → Asia Pacific
Corridor overview: North America to Asia Pacific
Full global matrix: Backbone Latency Matrix
Physical methodology: Theoretical Fiber Latency

Reverse direction

Sydney to Ashburn latency and RTT — 195.4 ms

Fastest routes departing Ashburn (IAD)

Ashburn to New York latency and RTT — 6 ms
Ashburn to Miami latency and RTT — 28.6 ms
Ashburn to Los Angeles latency and RTT — 60 ms
Ashburn to Seattle latency and RTT — 61.3 ms
Ashburn to London latency and RTT — 70.4 ms

Fastest routes arriving at Sydney (SYD)

Melbourne to Sydney latency and RTT — 9.8 ms
Singapore to Sydney latency and RTT — 95.3 ms
Tokyo to Sydney latency and RTT — 101.6 ms
Taipei to Sydney latency and RTT — 131.8 ms
Hong Kong to Sydney latency and RTT — 136.3 ms

Same corridor (North America → Asia Pacific)

Seattle to Tokyo latency and RTT — 84.8 ms
Los Angeles to Tokyo latency and RTT — 100.9 ms
Seattle to Taipei latency and RTT — 115.1 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/iad-syd.pings.{csv,json,yaml}. When citing, include the route, the measurement round timestamp, and the dataset version — for example: "Hats Network latency dataset, Ashburn → Sydney round 2026-08-15T04:03:13Z, CC BY 4.0".

Data auto-generated on August 15, 2026. Explore the full interactive latency matrix or browse more city-pair routes.

Ashburn, USA → Sydney, Australia RTT