ICMP RTT from Ashburn, USA to Sydney, Australia: average 193.6 ms, zero loss, Fair tier; includes 2026-08-16 measurement details and route ranking.

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

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

The 2026-08-16T04:07:28Z ICMP echo RTT measurement from Ashburn, USA, to Sydney, Australia, showed an average round trip of 193.6 ms over 50 samples, with a minimum of 185.3 ms and a maximum of 213.55 ms. Zero packet loss was observed, while the 6.56 ms standard deviation and 5.83 ms jitter place the route in the Fair latency tier.

Given the geodesic distance of 15,673.1 km, the theoretical fiber-floor RTT is 153.48 ms. The measured average is 1.26 times that floor, an efficiency of about 79.3%, which means the observed delay is relatively close to the physical lower bound for this distance.

The route ranked 16th of 19 outbound paths from this origin by average RTT. Its variability is slightly above the route set's median: the standard deviation is about 3.4% of the average, versus a median of 3.28%. With zero loss and a moderate spread between minimum and maximum, the path appears stable, though ICMP RTT alone is not a measure of application-level performance.

Latency Summary

Metric	Value
RTT	193.6 ms
Jitter	5.83 ms
Packet Loss	0%
Standard Fiber Floor	153.48 ms
Fiber Efficiency	79.3%
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 2026-08-16T04:07:28Z · avg 193.6 ± 0.93 ms (SE)

Sample distribution: box = interquartile range (189.1–195.9 ms), median 191.4 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	187.29
2	100	191.84
3	200	193.58
4	300	198.42
5	400	189.22
6	500	189.04
7	600	193.52
8	700	192.61
9	800	206.83
10	900	195.36
11	1000	194.99
12	1100	208.40
13	1200	200.90
14	1300	190.19
15	1400	189.77
16	1500	186.91
17	1600	190.28
18	1700	188.04
19	1800	210.76
20	1900	196.03
21	2000	195.61
22	2100	191.51
23	2200	186.95
24	2300	191.28
25	2400	200.82
26	2500	194.11
27	2600	192.67
28	2700	187.87
29	2800	186.88
30	2900	190.57
31	3000	190.36
32	3100	190.43
33	3200	193.60
34	3300	187.57
35	3400	189.05
36	3500	190.69
37	3600	191.21
38	3700	196.59
39	3800	213.55
40	3900	197.20
41	4000	189.69
42	4100	186.63
43	4200	198.85
44	4300	193.12
45	4400	191.25
46	4500	187.45
47	4600	185.30
48	4700	187.53
49	4800	206.69
50	4900	200.99

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

Round Statistic	Value
Minimum RTT	185.3 ms
Average RTT	193.6 ms
Maximum RTT	213.55 ms
Standard deviation	6.56 ms
Stdev / average	3.4%

RTT trend

Estimated route stability across the selected time window.

Average: 193.4 ms
Minimum: 191.6 ms
Maximum: 195.3 ms
Average loss: 0.02%

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 — 195.3 ms

Fastest routes departing Ashburn (IAD)

Ashburn to New York latency and RTT — 6 ms
Ashburn to Miami latency and RTT — 27.4 ms
Ashburn to Los Angeles latency and RTT — 60.7 ms
Ashburn to Seattle latency and RTT — 62.3 ms
Ashburn to London latency and RTT — 70.3 ms

Fastest routes arriving at Sydney (SYD)

Melbourne to Sydney latency and RTT — 9.8 ms
Singapore to Sydney latency and RTT — 94.5 ms
Tokyo to Sydney latency and RTT — 101.9 ms
Taipei to Sydney latency and RTT — 133.2 ms
Hong Kong to Sydney latency and RTT — 137.2 ms

Same corridor (North America → Asia Pacific)

Seattle to Tokyo latency and RTT — 85 ms
Los Angeles to Tokyo latency and RTT — 101.2 ms
Seattle to Taipei latency and RTT — 114.7 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 2026-08-16T04:07:28Z, CC BY 4.0".

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

Ashburn, USA → Sydney, Australia RTT