Explore Sydney, Australia to Marseille, France ICMP RTT, jitter, packet loss and fiber latency limits on the AS203314 network.

🇦🇺 Sydney, Australia (SYD) → 🇫🇷 Marseille, France (MRS)

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

Sydney to Marseille averaged 240.5 ms across 50 replies. The observed range was 231.2 to 264.13 ms; these figures describe one probe round, not a long-term service target.

Standard deviation was 7.87 ms, or 3.3% of the average. This describes variation within the sample without identifying its cause.

Latency Summary

Metric	Value
RTT	240.5 ms
Jitter	6.37 ms
Packet Loss	0%
Standard Fiber Floor	165.41 ms
Fiber Efficiency	68.8%
Latency Tier	Fair
Source Region	Asia Pacific
Destination Region	Europe

Ping Measurement Series

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

Ping series: SYD → MRS

50 ICMP echo samples at 100 ms intervals · round 2026-08-16T04:07:28Z · avg 240.5 ± 1.11 ms (SE)

Sample distribution: box = interquartile range (235.0–243.1 ms), median 238.3 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 (165.4 ms) for this route.

Full 50-sample dataset

Seq	Offset (ms)	RTT (ms)
1	0	236.76
2	100	242.40
3	200	235.60
4	300	238.90
5	400	234.79
6	500	250.19
7	600	237.72
8	700	239.50
9	800	240.83
10	900	237.51
11	1000	243.02
12	1100	235.01
13	1200	236.05
14	1300	232.94
15	1400	239.35
16	1500	235.27
17	1600	233.10
18	1700	246.49
19	1800	247.14
20	1900	238.82
21	2000	233.06
22	2100	240.85
23	2200	234.19
24	2300	231.31
25	2400	233.19
26	2500	231.20
27	2600	239.05
28	2700	238.62
29	2800	263.35
30	2900	249.58
31	3000	254.67
32	3100	264.13
33	3200	248.88
34	3300	237.33
35	3400	232.78
36	3500	237.98
37	3600	243.07
38	3700	234.09
39	3800	240.86
40	3900	235.86
41	4000	235.05
42	4100	231.73
43	4200	233.83
44	4300	238.71
45	4400	254.39
46	4500	255.63
47	4600	250.80
48	4700	237.05
49	4800	237.16
50	4900	245.21

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 Marseille (43.29695, 5.38107). These are not facility coordinates or a surveyed cable path.

Physical Reference	Value
WGS-84 geodesic distance	16,891 km
Vacuum RTT floor	112.68 ms
Standard fiber RTT floor ( $n_g=1.4679$ )	165.41 ms
Low-latency fiber material floor	164.74 ms
Engineering floor (5% path allowance)	173.7 ms
Research 1.33× mapped-fiber reference	219.99 ms
Estimated unamplified path loss	3547.1 dB
Transparent optical spans / inline amplifiers	222 / 221
Published RTT inflation over fiber floor	1.45×

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	231.2 ms
Average RTT	240.5 ms
Maximum RTT	264.13 ms
Standard deviation	7.87 ms
Stdev / average	3.3%

Estimated RTT trend

Modeled comparison, not historical probe measurements.

Average: 240.7 ms
Minimum: 238.1 ms
Maximum: 242.8 ms
Average loss: 0.02%

Route Context

Departure PoP: Sydney (SYD)
Destination PoP: Marseille (MRS)
Region overview: Asia Pacific → Europe
Full global matrix: Backbone Latency Matrix
Physical methodology: Theoretical Fiber Latency

Reverse direction

Marseille to Sydney latency and RTT: 240.6 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 Marseille (MRS)

Paris to Marseille latency and RTT: 8.9 ms
Frankfurt to Marseille latency and RTT: 16.4 ms
London to Marseille latency and RTT: 17.9 ms
Amsterdam to Marseille latency and RTT: 19.6 ms
Berlin to Marseille latency and RTT: 20.2 ms

Same corridor (Asia Pacific → Europe)

Hong Kong to Moscow latency and RTT: 118.2 ms
Taipei to Moscow latency and RTT: 132.7 ms
Singapore to Marseille latency and RTT: 140.6 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-mrs.pings.{csv,json,yaml}. Cite the route, round timestamp and dataset version. Example: "Hats Network latency dataset, Sydney → Marseille 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 → Marseille, France RTT