ICMP echo RTT from Marseille, France to Johannesburg, South Africa: 198.5 ms average, 0% loss, 2.5 ms jitter, with fiber floor reference for round 2026-08-16.

🇫🇷 Marseille, France (MRS) → 🇿🇦 Johannesburg, South Africa (JNB)

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

In the 2026-08-16T04:07:28Z round, ICMP echo RTT from Marseille to Johannesburg averaged 198.5 ms over 50 samples, with a minimum of 194.33 ms and a maximum of 207.86 ms. Packet loss was 0%, jitter was 2.5 ms, and the entire sample spread was only 13.53 ms, earning a Fair latency tier with unusually tight behavior.

At a geodesic distance of 8,037.1 km, the vacuum floor is 53.62 ms and the fiber floor is 78.71 ms. The 198.5 ms average is 2.52 times the fiber floor, or 39.7% fiber efficiency, indicating that the path's practical length is far greater than the direct Marseille–Johannesburg line.

This route was ranked 16th among the 19 outbound routes in the round, so it sits near the slower end of the set. Its standard deviation of 3.18 ms is only about 1.6% of the average RTT, well below the network-wide median of 3.28%, which makes it one of the more consistent long-distance routes in this measurement set.

Latency Summary

Metric	Value
RTT	198.5 ms
Jitter	2.5 ms
Packet Loss	0%
Standard Fiber Floor	78.71 ms
Fiber Efficiency	39.7%
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: MRS → JNB

50 ICMP echo samples at 100 ms intervals · round 2026-08-16T04:07:28Z · avg 198.5 ± 0.45 ms (SE)

Sample distribution: box = interquartile range (196.3–199.3 ms), median 198.1 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 (78.7 ms) for this route.

Full 50-sample dataset

Seq	Offset (ms)	RTT (ms)
1	0	198.94
2	100	207.86
3	200	199.12
4	300	199.07
5	400	207.82
6	500	206.94
7	600	200.36
8	700	197.49
9	800	196.53
10	900	200.77
11	1000	200.05
12	1100	199.73
13	1200	200.82
14	1300	198.34
15	1400	198.90
16	1500	197.60
17	1600	197.03
18	1700	198.05
19	1800	199.34
20	1900	196.92
21	2000	199.21
22	2100	195.79
23	2200	198.28
24	2300	196.94
25	2400	202.41
26	2500	198.10
27	2600	195.51
28	2700	195.87
29	2800	197.33
30	2900	198.91
31	3000	197.21
32	3100	195.48
33	3200	194.41
34	3300	195.22
35	3400	194.75
36	3500	195.77
37	3600	199.38
38	3700	204.48
39	3800	198.26
40	3900	195.33
41	4000	194.73
42	4100	194.33
43	4200	197.00
44	4300	204.08
45	4400	199.19
46	4500	198.36
47	4600	197.51
48	4700	197.24
49	4800	196.29
50	4900	195.95

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 Marseille (43.29695, 5.38107) and Johannesburg (-26.20227, 28.04363). It does not disclose either facility address.

Physical Reference	Value
WGS-84 geodesic distance	8,037.1 km
Vacuum RTT floor	53.62 ms
Standard fiber RTT floor ( $n_g=1.4679$ )	78.71 ms
Low-latency fiber material floor	78.39 ms
Engineering floor (5% path allowance)	82.65 ms
Research 1.33× mapped-fiber reference	104.68 ms
Estimated unamplified path loss	1687.8 dB
Transparent optical spans / inline amplifiers	106 / 105
Published RTT inflation over fiber floor	2.52×

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	194.33 ms
Average RTT	198.5 ms
Maximum RTT	207.86 ms
Standard deviation	3.18 ms
Stdev / average	1.6%

RTT trend

Estimated route stability across the selected time window.

Average: 198.7 ms
Minimum: 196.6 ms
Maximum: 200.7 ms
Average loss: 0.03%

Route Context

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

Reverse direction

Johannesburg to Marseille latency and RTT — 172 ms

Fastest routes departing Marseille (MRS)

Marseille to Paris latency and RTT — 8.9 ms
Marseille to Frankfurt latency and RTT — 16 ms
Marseille to London latency and RTT — 18.9 ms
Marseille to Amsterdam latency and RTT — 20.3 ms
Marseille to Berlin latency and RTT — 20.6 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
Paris to Johannesburg latency and RTT — 180.9 ms
Frankfurt to Johannesburg latency and RTT — 188.4 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/mrs-jnb.pings.{csv,json,yaml}. When citing, include the route, the measurement round timestamp, and the dataset version — for example: "Hats Network latency dataset, Marseille → 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.

Marseille, France → Johannesburg, South Africa RTT