Sydney, Australia to Ashburn, USA ICMP RTT measurement: average, minimum, maximum, jitter, packet loss, and route efficiency for this long-haul path.

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

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

In the 2026-08-15T04:03:13Z round, ICMP echo probes from Sydney, Australia to Ashburn, USA returned an average round-trip time of 195.4 ms, with samples from 188.59 ms to 212.3 ms and no packet loss. The 5.42 ms standard deviation and 5.13 ms jitter show modest variability, and the route is classified in the fair latency tier.

At 78.5% fiber efficiency, this path is close to the theoretical fiber-floor minimum: the observed average is only 1.27 times that baseline over a great-circle distance of 15,673.1 km. This makes it a comparatively direct, well-behaved trans-Pacific crossing.

Ranked 10th among the 19 outbound routes in the round, the route's relative spread of about 2.8% is slightly tighter than the 3.1% median relative spread for the set. The zero-loss result and sub-200 ms average are useful reference points for Sydney-to-Ashburn connectivity.

Latency Summary

Metric	Value
RTT	195.4 ms
Jitter	5.13 ms
Packet Loss	0%
Standard Fiber Floor	153.48 ms
Fiber Efficiency	78.5%
Latency Tier	Fair
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 → IAD

50 ICMP echo samples at 100 ms intervals · round 2026-08-15T04:03:13Z · avg 195.4 ± 0.77 ms (SE)

Sample distribution: box = interquartile range (191.7–197.1 ms), median 193.7 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 (153.5 ms) for this route.

Full 50-sample dataset

Seq	Offset (ms)	RTT (ms)
1	0	190.26
2	100	195.19
3	200	192.37
4	300	193.79
5	400	189.70
6	500	191.73
7	600	203.69
8	700	196.00
9	800	190.47
10	900	189.52
11	1000	188.59
12	1100	190.58
13	1200	212.30
14	1300	207.96
15	1400	201.32
16	1500	193.59
17	1600	194.25
18	1700	190.18
19	1800	191.98
20	1900	189.70
21	2000	207.67
22	2100	200.02
23	2200	191.88
24	2300	193.41
25	2400	206.67
26	2500	199.43
27	2600	192.92
28	2700	191.32
29	2800	188.92
30	2900	192.96
31	3000	204.39
32	3100	197.61
33	3200	191.79
34	3300	196.55
35	3400	195.70
36	3500	193.15
37	3600	196.04
38	3700	196.18
39	3800	197.25
40	3900	192.36
41	4000	195.06
42	4100	191.50
43	4200	193.82
44	4300	202.75
45	4400	194.15
46	4500	198.78
47	4600	193.60
48	4700	191.65
49	4800	196.53
50	4900	192.77

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 Ashburn (39.04372, -77.48749). 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	1.27×

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	188.59 ms
Average RTT	195.4 ms
Maximum RTT	212.3 ms
Standard deviation	5.42 ms
Stdev / average	2.8%

RTT trend

Estimated route stability across the selected time window.

Average: 195.3 ms
Minimum: 193.4 ms
Maximum: 197.5 ms
Average loss: 0.04%

Route Context

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

Reverse direction

Ashburn to Sydney latency and RTT — 193.4 ms

Fastest routes departing Sydney (SYD)

Sydney to Melbourne latency and RTT — 9.8 ms
Sydney to Singapore latency and RTT — 94.7 ms
Sydney to Tokyo latency and RTT — 101.6 ms
Sydney to Taipei latency and RTT — 133.2 ms
Sydney to Hong Kong latency and RTT — 135.9 ms

Fastest routes arriving at Ashburn (IAD)

New York to Ashburn latency and RTT — 6 ms
Miami to Ashburn latency and RTT — 27.3 ms
Los Angeles to Ashburn latency and RTT — 59.9 ms
Seattle to Ashburn latency and RTT — 62 ms
London to Ashburn latency and RTT — 71.3 ms

Same corridor (Asia Pacific → North America)

Tokyo to Seattle latency and RTT — 84.6 ms
Tokyo to Los Angeles latency and RTT — 101.5 ms
Taipei to Seattle latency and RTT — 115.7 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/syd-iad.pings.{csv,json,yaml}. When citing, include the route, the measurement round timestamp, and the dataset version — for example: "Hats Network latency dataset, Sydney → Ashburn 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.

Sydney, Australia → Ashburn, USA RTT