ICMP RTT metrics from São Paulo, Brazil to Marseille, France: average, minimum, maximum, jitter, packet loss, and fiber efficiency for this route.

🇧🇷 São Paulo, Brazil (GRU) → 🇫🇷 Marseille, France (MRS)

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

During the 2026-08-15T04:03:13Z round, the São Paulo-to-Marseille ICMP path recorded a 186.2 ms average RTT from 50 samples, with a minimum of 181.19 ms and a maximum of 199.82 ms. The full sample stayed within an 18.63 ms spread, and all probes returned without loss.

Standard deviation was 4.12 ms, about 2.2% of the average, while jitter was 3.29 ms. That variability sits below the 3.08% median observed for the 19 outbound routes in this round, and the path ranked ninth in that outbound set.

For the 9,113 km separation, the measured RTT is 2.09 times the theoretical fiber floor of 89.24 ms, equating to 47.9% fiber efficiency. The Fair latency tier therefore reflects absolute distance more than instability: the round-trip time is consistently near 186 ms with no packet loss.

Latency Summary

Metric	Value
RTT	186.2 ms
Jitter	3.29 ms
Packet Loss	0%
Standard Fiber Floor	89.24 ms
Fiber Efficiency	47.9%
Latency Tier	Fair
Source Region	South America
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: GRU → MRS

50 ICMP echo samples at 100 ms intervals · round 2026-08-15T04:03:13Z · avg 186.2 ± 0.58 ms (SE)

Sample distribution: box = interquartile range (183.5–188.0 ms), median 185.0 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 (89.2 ms) for this route.

Full 50-sample dataset

Seq	Offset (ms)	RTT (ms)
1	0	199.82
2	100	189.06
3	200	185.58
4	300	184.14
5	400	183.04
6	500	182.22
7	600	181.44
8	700	181.19
9	800	181.62
10	900	182.88
11	1000	181.77
12	1100	190.14
13	1200	184.22
14	1300	183.00
15	1400	183.41
16	1500	186.50
17	1600	187.98
18	1700	183.79
19	1800	183.02
20	1900	186.08
21	2000	183.67
22	2100	182.61
23	2200	183.60
24	2300	184.00
25	2400	187.97
26	2500	190.17
27	2600	199.41
28	2700	188.04
29	2800	184.73
30	2900	184.05
31	3000	184.98
32	3100	188.01
33	3200	184.18
34	3300	185.85
35	3400	184.94
36	3500	194.59
37	3600	186.93
38	3700	188.06
39	3800	185.07
40	3900	187.80
41	4000	183.51
42	4100	183.05
43	4200	183.84
44	4300	195.04
45	4400	187.24
46	4500	187.51
47	4600	191.84
48	4700	187.90
49	4800	183.50
50	4900	187.01

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 São Paulo (-23.54750, -46.63611) and Marseille (43.29695, 5.38107). It does not disclose either facility address.

Physical Reference	Value
WGS-84 geodesic distance	9,113 km
Vacuum RTT floor	60.8 ms
Standard fiber RTT floor ( $n_g=1.4679$ )	89.24 ms
Low-latency fiber material floor	88.88 ms
Engineering floor (5% path allowance)	93.72 ms
Research 1.33× mapped-fiber reference	118.69 ms
Estimated unamplified path loss	1913.7 dB
Transparent optical spans / inline amplifiers	120 / 119
Published RTT inflation over fiber floor	2.09×

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	181.19 ms
Average RTT	186.2 ms
Maximum RTT	199.82 ms
Standard deviation	4.12 ms
Stdev / average	2.2%

RTT trend

Estimated route stability across the selected time window.

Average: 186.1 ms
Minimum: 184.6 ms
Maximum: 188.2 ms
Average loss: 0.02%

Route Context

Departure PoP: São Paulo (GRU)
Destination PoP: Marseille (MRS)
Region overview: South America → Europe
Full global matrix: Backbone Latency Matrix
Physical methodology: Theoretical Fiber Latency

Reverse direction

Marseille to São Paulo latency and RTT — 188.1 ms

Fastest routes departing São Paulo (GRU)

São Paulo to Miami latency and RTT — 74 ms
São Paulo to New York latency and RTT — 122 ms
São Paulo to Ashburn latency and RTT — 128 ms
São Paulo to Los Angeles latency and RTT — 130.8 ms
São Paulo to Seattle latency and RTT — 156 ms

Fastest routes arriving at Marseille (MRS)

Paris to Marseille latency and RTT — 8.9 ms
Frankfurt to Marseille latency and RTT — 17.2 ms
Amsterdam to Marseille latency and RTT — 19.7 ms
Berlin to Marseille latency and RTT — 20.5 ms
London to Marseille latency and RTT — 24.9 ms

Same corridor (South America → Europe)

São Paulo to London latency and RTT — 174.7 ms
São Paulo to Paris latency and RTT — 179.4 ms
São Paulo to Amsterdam latency and RTT — 181.3 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/gru-mrs.pings.{csv,json,yaml}. When citing, include the route, the measurement round timestamp, and the dataset version — for example: "Hats Network latency dataset, São Paulo → Marseille 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.

São Paulo, Brazil → Marseille, France RTT