Explore São Paulo, Brazil to Marseille, France ICMP RTT, jitter, packet loss and fiber latency limits on the AS203314 network.

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

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

São Paulo to Marseille averaged 187.7 ms, compared with a 89.24 ms city-centre fiber reference. The difference cannot be assigned to a particular cable or carrier from RTT alone.

Standard deviation was 8.46 ms, or 4.5% of the average. This describes variation within the sample without identifying its cause.

Latency Summary

Metric	Value
RTT	187.7 ms
Jitter	7.15 ms
Packet Loss	0%
Standard Fiber Floor	89.24 ms
Fiber Efficiency	47.5%
Latency Tier	Fair
Source Region	South America
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: GRU → MRS

50 ICMP echo samples at 100 ms intervals · round 2026-08-16T04:07:28Z · avg 187.7 ± 1.20 ms (SE)

Sample distribution: box = interquartile range (181.5–192.7 ms), median 184.5 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	178.29
2	100	176.81
3	200	191.53
4	300	193.31
5	400	189.23
6	500	189.16
7	600	180.54
8	700	184.44
9	800	180.61
10	900	178.00
11	1000	182.24
12	1100	181.83
13	1200	179.48
14	1300	177.99
15	1400	203.92
16	1500	202.00
17	1600	189.75
18	1700	212.03
19	1800	195.01
20	1900	188.37
21	2000	182.14
22	2100	179.81
23	2200	196.92
24	2300	207.95
25	2400	189.42
26	2500	184.03
27	2600	191.14
28	2700	199.90
29	2800	187.62
30	2900	181.43
31	3000	181.71
32	3100	194.33
33	3200	201.29
34	3300	185.21
35	3400	180.60
36	3500	181.87
37	3600	183.63
38	3700	179.12
39	3800	183.59
40	3900	182.57
41	4000	179.25
42	4100	186.18
43	4200	193.03
44	4300	196.74
45	4400	184.50
46	4500	188.63
47	4600	181.07
48	4700	183.01
49	4800	182.39
50	4900	201.38

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: São Paulo (-23.54750, -46.63611) and Marseille (43.29695, 5.38107). These are not facility coordinates or a surveyed cable path.

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	2.1×

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	176.81 ms
Average RTT	187.7 ms
Maximum RTT	212.03 ms
Standard deviation	8.46 ms
Stdev / average	4.5%

Estimated RTT trend

Modeled comparison, not historical probe measurements.

Average: 188.0 ms
Minimum: 186.3 ms
Maximum: 189.6 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: 186.7 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: 155.9 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 (South America → Europe)

São Paulo to London latency and RTT: 175.8 ms
São Paulo to Amsterdam latency and RTT: 180 ms
São Paulo to Paris latency and RTT: 180.2 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/gru-mrs.pings.{csv,json,yaml}. Cite the route, round timestamp and dataset version. Example: "Hats Network latency dataset, São Paulo → 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.

São Paulo, Brazil → Marseille, France RTT