ICMP RTT measurement for Paris, France to Johannesburg, South Africa: average 180.9 ms, 0% loss, 47.1% fiber efficiency. Route context and insights.

🇫🇷 Paris, France (PAR) → 🇿🇦 Johannesburg, South Africa (JNB)

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

On the 2026-08-16T04:07:28Z ICMP echo round, probes from Paris, France to Johannesburg, South Africa averaged 180.9 ms across 50 samples, with a minimum of 176.39 ms, a maximum of 195.6 ms and zero packet loss. Measured jitter was 3.26 ms, keeping the route stable even though its 180.9 ms average places it in the Fair latency tier.

The physical reference for this 8,697.3 km route is a vacuum floor of 58.02 ms and a fiber floor of 85.17 ms. The observed average is 2.12 times the fiber floor, which translates to 47.1% fiber efficiency; that is a realistic outcome for an intercontinental path to Southern Africa and leaves meaningful headroom over the theoretical minimum.

Across the network's 19 outbound routes, Paris–Johannesburg ranks 16th, so it sits on the slower end of the measured set, as its distance would suggest. Its standard deviation of 3.41 ms is about 1.9% of the average, comfortably below the network's median 3.28% dispersion, so the route's long path is paired with notably consistent timing.

Latency Summary

Metric	Value
RTT	180.9 ms
Jitter	3.26 ms
Packet Loss	0%
Standard Fiber Floor	85.17 ms
Fiber Efficiency	47.1%
Latency Tier	Fair
Source Region	Europe
Destination Region	Africa

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: PAR → JNB

50 ICMP echo samples at 100 ms intervals · round 2026-08-16T04:07:28Z · avg 180.9 ± 0.48 ms (SE)

Sample distribution: box = interquartile range (178.9–182.5 ms), median 179.9 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 (85.2 ms) for this route.

Full 50-sample dataset

Seq	Offset (ms)	RTT (ms)
1	0	176.39
2	100	195.60
3	200	183.45
4	300	182.31
5	400	182.85
6	500	178.69
7	600	183.40
8	700	189.55
9	800	180.85
10	900	181.17
11	1000	179.77
12	1100	178.95
13	1200	178.96
14	1300	177.47
15	1400	179.58
16	1500	182.92
17	1600	184.18
18	1700	179.03
19	1800	177.01
20	1900	179.65
21	2000	177.17
22	2100	179.92
23	2200	184.70
24	2300	182.93
25	2400	182.33
26	2500	178.32
27	2600	182.53
28	2700	181.72
29	2800	178.41
30	2900	177.04
31	3000	179.88
32	3100	180.86
33	3200	177.60
34	3300	181.52
35	3400	187.60
36	3500	180.39
37	3600	178.10
38	3700	179.85
39	3800	179.53
40	3900	182.43
41	4000	179.82
42	4100	183.02
43	4200	179.47
44	4300	184.47
45	4400	179.27
46	4500	179.17
47	4600	180.92
48	4700	178.94
49	4800	177.83
50	4900	177.48

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 Paris (48.85341, 2.34880) and Johannesburg (-26.20227, 28.04363). It does not disclose either facility address.

Physical Reference	Value
WGS-84 geodesic distance	8,697.3 km
Vacuum RTT floor	58.02 ms
Standard fiber RTT floor ( $n_g=1.4679$ )	85.17 ms
Low-latency fiber material floor	84.83 ms
Engineering floor (5% path allowance)	89.44 ms
Research 1.33× mapped-fiber reference	113.28 ms
Estimated unamplified path loss	1826.4 dB
Transparent optical spans / inline amplifiers	115 / 114
Published RTT inflation over fiber floor	2.12×

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	176.39 ms
Average RTT	180.9 ms
Maximum RTT	195.6 ms
Standard deviation	3.41 ms
Stdev / average	1.9%

RTT trend

Estimated route stability across the selected time window.

Average: 181.1 ms
Minimum: 179.3 ms
Maximum: 182.5 ms
Average loss: 0.02%

Route Context

Departure PoP: Paris (PAR)
Destination PoP: Johannesburg (JNB)
Region overview: Europe → Africa
Full global matrix: Backbone Latency Matrix
Physical methodology: Theoretical Fiber Latency

Reverse direction

Johannesburg to Paris latency and RTT — 164.4 ms

Fastest routes departing Paris (PAR)

Paris to London latency and RTT — 6.4 ms
Paris to Amsterdam latency and RTT — 7 ms
Paris to Frankfurt latency and RTT — 7.6 ms
Paris to Marseille latency and RTT — 8.9 ms
Paris to Berlin latency and RTT — 15.5 ms

Fastest routes arriving at Johannesburg (JNB)

Amsterdam to Johannesburg latency and RTT — 171.9 ms
Berlin to Johannesburg latency and RTT — 172.1 ms
London to Johannesburg latency and RTT — 179.6 ms
Frankfurt to Johannesburg latency and RTT — 188.4 ms
Marseille to Johannesburg latency and RTT — 198.5 ms

Same corridor (Europe → Africa)

Moscow to Johannesburg latency and RTT — 201.9 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/par-jnb.pings.{csv,json,yaml}. When citing, include the route, the measurement round timestamp, and the dataset version — for example: "Hats Network latency dataset, Paris → Johannesburg 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.

Paris, France → Johannesburg, South Africa RTT