ICMP RTT page: Sydney, Australia to Paris, France, 50-probe average 250.3 ms, min 243.57 ms, max 268.33 ms, zero packet loss.

🇦🇺 Sydney, Australia (SYD) → 🇫🇷 Paris, France (PAR)

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

ICMP echo measurements taken at 2026-08-16T04:07:28Z show an average Sydney–Paris round-trip time of 250.3 ms from 50 probes spaced 100 ms apart. The minimum was 243.57 ms, the maximum 268.33 ms, and all probes returned successfully.

Variability on this path is low: standard deviation was 5.4 ms and jitter 3.75 ms, a spread of roughly 2.2% of the average — below the 3.28% median ratio for the 19 outgoing paths in this round. On average RTT, the route is 13th of those 19 paths.

The geodesic distance between Sydney and Paris is 16,957.7 km, and the direct-fiber floor is about 166.06 ms. The measured 250.3 ms is 1.51 times that floor, corresponding to a 66.3% fiber-efficiency score, and the zero-loss, low-jitter profile makes this a clean ICMP timing reference for the route.

Latency Summary

Metric	Value
RTT	250.3 ms
Jitter	3.75 ms
Packet Loss	0%
Standard Fiber Floor	166.06 ms
Fiber Efficiency	66.3%
Latency Tier	High
Source Region	Asia Pacific
Destination Region	Europe

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 → PAR

50 ICMP echo samples at 100 ms intervals · round 2026-08-16T04:07:28Z · avg 250.3 ± 0.76 ms (SE)

Sample distribution: box = interquartile range (246.4–253.4 ms), median 249.0 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 (166.1 ms) for this route.

Full 50-sample dataset

Seq	Offset (ms)	RTT (ms)
1	0	258.75
2	100	259.31
3	200	253.84
4	300	254.28
5	400	250.61
6	500	256.64
7	600	259.64
8	700	252.82
9	800	254.03
10	900	248.05
11	1000	246.91
12	1100	244.59
13	1200	243.57
14	1300	246.50
15	1400	246.86
16	1500	249.00
17	1600	252.53
18	1700	253.67
19	1800	253.37
20	1900	251.72
21	2000	246.41
22	2100	244.70
23	2200	254.12
24	2300	250.98
25	2400	252.40
26	2500	264.46
27	2600	253.47
28	2700	247.86
29	2800	246.61
30	2900	246.57
31	3000	243.75
32	3100	256.34
33	3200	247.63
34	3300	249.99
35	3400	245.81
36	3500	245.08
37	3600	250.84
38	3700	252.03
39	3800	245.79
40	3900	250.85
41	4000	248.91
42	4100	247.05
43	4200	246.16
44	4300	246.51
45	4400	247.62
46	4500	244.51
47	4600	244.21
48	4700	244.23
49	4800	245.09
50	4900	268.33

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 Paris (48.85341, 2.34880). It does not disclose either facility address.

Physical Reference	Value
WGS-84 geodesic distance	16,957.7 km
Vacuum RTT floor	113.13 ms
Standard fiber RTT floor ( $n_g=1.4679$ )	166.06 ms
Low-latency fiber material floor	165.4 ms
Engineering floor (5% path allowance)	174.39 ms
Research 1.33× mapped-fiber reference	220.86 ms
Estimated unamplified path loss	3561.1 dB
Transparent optical spans / inline amplifiers	223 / 222
Published RTT inflation over fiber floor	1.51×

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	243.57 ms
Average RTT	250.3 ms
Maximum RTT	268.33 ms
Standard deviation	5.4 ms
Stdev / average	2.2%

RTT trend

Estimated route stability across the selected time window.

Average: 250.5 ms
Minimum: 247.8 ms
Maximum: 253.2 ms
Average loss: 0.04%

Route Context

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

Reverse direction

Paris to Sydney latency and RTT — 249.7 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 Paris (PAR)

London to Paris latency and RTT — 6.4 ms
Amsterdam to Paris latency and RTT — 7 ms
Frankfurt to Paris latency and RTT — 7.6 ms
Marseille to Paris latency and RTT — 8.9 ms
Berlin to Paris latency and RTT — 15.6 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

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-par.pings.{csv,json,yaml}. When citing, include the route, the measurement round timestamp, and the dataset version — for example: "Hats Network latency dataset, Sydney → Paris 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 → Paris, France RTT