ICMP RTT measurement for Los Angeles, USA to Marseille, France: average 145.5 ms, jitter 2.76 ms, zero packet loss, and distance-adjusted latency context.

🇺🇸 Los Angeles, USA (LAX) → 🇫🇷 Marseille, France (MRS)

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

Measured in the 2026-08-15T04:03:13Z round, the Los Angeles-to-Marseille path returned an average ICMP RTT of 145.5 ms, with a minimum of 142.03 ms and a maximum of 159.18 ms. All 50 samples reached the destination, packet loss was zero, and jitter stayed at 2.76 ms with a standard deviation of 3.4 ms.

The great-circle distance of 9,710.4 km puts the vacuum-light floor at 64.78 ms and the fiber-floor estimate at 95.09 ms. The observed average is 1.53 times that fiber floor, or about 65.4% fiber efficiency, so the measured delay stays reasonably close to the unavoidable distance bound. This measurement connects a Pacific-facing US landing hub with France's Mediterranean cable gateway, making it a useful long-haul latency reference.

Within the 19-route outbound set, this path ranks 15th by average RTT, meaning most measured destinations from the same source were faster. Its variability is below the route-set median of 3.08% when standard deviation is expressed relative to average, indicating a steady long-haul path despite the lower rank.

Latency Summary

Metric	Value
RTT	145.5 ms
Jitter	2.76 ms
Packet Loss	0%
Standard Fiber Floor	95.09 ms
Fiber Efficiency	65.4%
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: LAX → MRS

50 ICMP echo samples at 100 ms intervals · round 2026-08-15T04:03:13Z · avg 145.5 ± 0.48 ms (SE)

Sample distribution: box = interquartile range (143.6–146.4 ms), median 144.8 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 (95.1 ms) for this route.

Full 50-sample dataset

Seq	Offset (ms)	RTT (ms)
1	0	146.55
2	100	145.10
3	200	145.21
4	300	143.39
5	400	159.18
6	500	147.77
7	600	144.74
8	700	142.98
9	800	142.68
10	900	145.73
11	1000	143.76
12	1100	145.70
13	1200	145.39
14	1300	147.10
15	1400	143.58
16	1500	144.02
17	1600	157.18
18	1700	147.05
19	1800	144.32
20	1900	143.10
21	2000	144.46
22	2100	143.50
23	2200	143.67
24	2300	146.73
25	2400	143.63
26	2500	142.93
27	2600	142.09
28	2700	145.70
29	2800	144.03
30	2900	142.65
31	3000	142.03
32	3100	143.21
33	3200	142.42
34	3300	146.64
35	3400	144.60
36	3500	147.48
37	3600	146.93
38	3700	146.13
39	3800	145.88
40	3900	146.62
41	4000	144.89
42	4100	143.91
43	4200	143.65
44	4300	142.86
45	4400	143.87
46	4500	155.93
47	4600	147.48
48	4700	145.59
49	4800	145.04
50	4900	145.92

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 Los Angeles (34.05223, -118.24368) and Marseille (43.29695, 5.38107). It does not disclose either facility address.

Physical Reference	Value
WGS-84 geodesic distance	9,710.4 km
Vacuum RTT floor	64.78 ms
Standard fiber RTT floor ( $n_g=1.4679$ )	95.09 ms
Low-latency fiber material floor	94.71 ms
Engineering floor (5% path allowance)	99.86 ms
Research 1.33× mapped-fiber reference	126.47 ms
Estimated unamplified path loss	2039.2 dB
Transparent optical spans / inline amplifiers	128 / 127
Published RTT inflation over fiber floor	1.53×

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	142.03 ms
Average RTT	145.5 ms
Maximum RTT	159.18 ms
Standard deviation	3.4 ms
Stdev / average	2.3%

RTT trend

Estimated route stability across the selected time window.

Average: 145.5 ms
Minimum: 144.1 ms
Maximum: 147.0 ms
Average loss: 0.02%

Route Context

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

Reverse direction

Marseille to Los Angeles latency and RTT — 144.4 ms

Fastest routes departing Los Angeles (LAX)

Los Angeles to Seattle latency and RTT — 27.5 ms
Los Angeles to Miami latency and RTT — 57.1 ms
Los Angeles to New York latency and RTT — 59 ms
Los Angeles to Ashburn latency and RTT — 59.9 ms
Los Angeles to Tokyo latency and RTT — 100.9 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 (North America → Europe)

New York to London latency and RTT — 64.3 ms
New York to Paris latency and RTT — 68.4 ms
New York to Amsterdam latency and RTT — 68.5 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/lax-mrs.pings.{csv,json,yaml}. When citing, include the route, the measurement round timestamp, and the dataset version — for example: "Hats Network latency dataset, Los Angeles → 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.

Los Angeles, USA → Marseille, France RTT