See measured ICMP echo RTT from Miami, USA to Marseille, France: average latency, jitter, packet loss, and efficiency for this Mediterranean landing route.

🇺🇸 Miami, USA (MIA) → 🇫🇷 Marseille, France (MRS)

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

For the 2026-08-16T04:07:28Z window, Miami, USA to Marseille, France averaged 113.7 ms on ICMP echo RTT, with zero loss across 50 samples and a Good latency tier. The minimum was 110.36 ms, the maximum 126.2 ms, and jitter was 2.44 ms.

With 7,752.4 km between the cities, the fiber floor is about 75.92 ms; the measured average is 1.50 times that floor, equivalent to roughly 66.8% fiber efficiency. The minimum of 110.36 ms leaves a 34.4 ms overhead above that floor, while the full range of samples stayed within a 15.84 ms band.

Among the 19 outbound routes in the same measurement set, Miami-Marseille ranked 9th by RTT. Its standard deviation of 3.72 ms equals about 3.3% of the average, effectively matching the 3.28% network median variability; the combination of stable spread, 2.44 ms jitter, and no loss makes this a dependable route despite the 113.7 ms average.

Latency Summary

Metric	Value
RTT	113.7 ms
Jitter	2.44 ms
Packet Loss	0%
Standard Fiber Floor	75.92 ms
Fiber Efficiency	66.8%
Latency Tier	Good
Source Region	North 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: MIA → MRS

50 ICMP echo samples at 100 ms intervals · round 2026-08-16T04:07:28Z · avg 113.7 ± 0.53 ms (SE)

Sample distribution: box = interquartile range (111.2–114.0 ms), median 112.3 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 (75.9 ms) for this route.

Full 50-sample dataset

Seq	Offset (ms)	RTT (ms)
1	0	112.35
2	100	112.70
3	200	111.06
4	300	111.14
5	400	112.36
6	500	111.90
7	600	111.06
8	700	118.45
9	800	126.20
10	900	119.55
11	1000	115.38
12	1100	113.07
13	1200	112.25
14	1300	111.28
15	1400	110.71
16	1500	111.88
17	1600	110.88
18	1700	110.36
19	1800	123.79
20	1900	119.59
21	2000	113.51
22	2100	111.57
23	2200	111.70
24	2300	111.31
25	2400	110.54
26	2500	110.73
27	2600	111.15
28	2700	111.55
29	2800	111.16
30	2900	112.49
31	3000	111.15
32	3100	115.81
33	3200	116.38
34	3300	112.43
35	3400	110.97
36	3500	111.91
37	3600	110.77
38	3700	112.33
39	3800	122.64
40	3900	118.99
41	4000	115.29
42	4100	121.21
43	4200	113.98
44	4300	113.57
45	4400	112.82
46	4500	113.77
47	4600	113.99
48	4700	112.04
49	4800	111.32
50	4900	111.96

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 Miami (25.77427, -80.19366) and Marseille (43.29695, 5.38107). It does not disclose either facility address.

Physical Reference	Value
WGS-84 geodesic distance	7,752.4 km
Vacuum RTT floor	51.72 ms
Standard fiber RTT floor ( $n_g=1.4679$ )	75.92 ms
Low-latency fiber material floor	75.61 ms
Engineering floor (5% path allowance)	79.72 ms
Research 1.33× mapped-fiber reference	100.97 ms
Estimated unamplified path loss	1628 dB
Transparent optical spans / inline amplifiers	102 / 101
Published RTT inflation over fiber floor	1.5×

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	110.36 ms
Average RTT	113.7 ms
Maximum RTT	126.2 ms
Standard deviation	3.72 ms
Stdev / average	3.3%

RTT trend

Estimated route stability across the selected time window.

Average: 113.7 ms
Minimum: 112.5 ms
Maximum: 114.6 ms
Average loss: 0.02%

Route Context

Departure PoP: Miami (MIA)
Destination PoP: Marseille (MRS)
Region overview: North America → Europe
Full global matrix: Backbone Latency Matrix
Physical methodology: Theoretical Fiber Latency

Reverse direction

Marseille to Miami latency and RTT — 112.4 ms

Fastest routes departing Miami (MIA)

Miami to Ashburn latency and RTT — 27.3 ms
Miami to New York latency and RTT — 33.3 ms
Miami to Los Angeles latency and RTT — 56.8 ms
Miami to Seattle latency and RTT — 81.9 ms
Miami to London latency and RTT — 101.8 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 (North America → Europe)

New York to London latency and RTT — 63.5 ms
New York to Amsterdam latency and RTT — 68.7 ms
New York to Paris latency and RTT — 68.9 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/mia-mrs.pings.{csv,json,yaml}. When citing, include the route, the measurement round timestamp, and the dataset version — for example: "Hats Network latency dataset, Miami → Marseille 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.

Miami, USA → Marseille, France RTT