# Marseille, France → Los Angeles, USA RTT

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

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

Measurement round 2026-08-16T04:07:28Z covered 50 ICMP echo probes from Marseille to Los Angeles with an average RTT of 144.5 ms, a minimum of 140.24 ms, and a maximum of 154.02 ms. The 3.04 ms standard deviation and 2.51 ms jitter show moderate spread over a very long path, while zero packet loss indicates the route remained fully responsive during the sample window.

With a geodesic distance of 9,710.4 km, the fiber-floor estimate for this route is 95.09 ms. The observed average is 1.52 times that floor, giving a fiber efficiency of 65.8 percent and placing the route in the Good latency tier.

Among the 19 outbound routes in this measurement set, Marseille-Los Angeles ranks 12th, placing it toward the lower half of the current outbound order. Its standard-deviation-to-average ratio is about 2.1 percent, well below the network-median 3.28 percent, so absolute RTT is high but the round-trip times remained comparatively steady across the 50 probes.

## Latency Summary

| Metric               | Value                                                        |
| -------------------- | ------------------------------------------------------------ |
| RTT                  | **144.5 ms**                                                 |
| Jitter               | **2.51 ms**                                                  |
| Packet Loss          | **0%**                                                       |
| Standard Fiber Floor | **95.09 ms**                                                 |
| Fiber Efficiency     | **65.8%**                                                    |
| Latency Tier         | Good                                                         |
| Source Region        | [Europe](/docs/network/latency/regions/europe)               |
| Destination Region   | [North America](/docs/network/latency/regions/north-america) |

## 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.

## 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](#about-this-measurement) for citation guidance.

## Theoretical Fiber Latency

The public physical reference uses the GeoNames city centres for [Marseille](https://www.geonames.org/2995469) (43.29695, 5.38107) and [Los Angeles](https://www.geonames.org/5368361) (34.05223, -118.24368). 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      | **1.52×**      |

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](/docs/network/latency/theoretical-fiber-latency).

## 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        | **140.24 ms** |
| Average RTT        | **144.5 ms**  |
| Maximum RTT        | **154.02 ms** |
| Standard deviation | **3.04 ms**   |
| Stdev / average    | **2.1%**      |

## Route Context

* Departure PoP: [Marseille (MRS)](/docs/network/latency/mrs-marseille)
* Destination PoP: [Los Angeles (LAX)](/docs/network/latency/lax-los-angeles)
* Region overview: [Europe](/docs/network/latency/regions/europe) → [North America](/docs/network/latency/regions/north-america)
* Corridor overview: [Europe to North America](/docs/network/latency/regions/europe-to-north-america)
* Full global matrix: [Backbone Latency Matrix](/docs/network/latency)
* Physical methodology: [Theoretical Fiber Latency](/docs/network/latency/theoretical-fiber-latency)

## Related City-Pair Routes

**Reverse direction**

* [Los Angeles to Marseille latency and RTT](/docs/network/latency/pairs/lax-mrs-rtt) — 143.9 ms

**Fastest routes departing Marseille (MRS)**

* [Marseille to Paris latency and RTT](/docs/network/latency/pairs/mrs-par-rtt) — 8.9 ms
* [Marseille to Frankfurt latency and RTT](/docs/network/latency/pairs/mrs-fra-rtt) — 16 ms
* [Marseille to London latency and RTT](/docs/network/latency/pairs/mrs-lon-rtt) — 18.9 ms
* [Marseille to Amsterdam latency and RTT](/docs/network/latency/pairs/mrs-ams-rtt) — 20.3 ms
* [Marseille to Berlin latency and RTT](/docs/network/latency/pairs/mrs-ber-rtt) — 20.6 ms

**Fastest routes arriving at Los Angeles (LAX)**

* [Seattle to Los Angeles latency and RTT](/docs/network/latency/pairs/sea-lax-rtt) — 25.9 ms
* [Miami to Los Angeles latency and RTT](/docs/network/latency/pairs/mia-lax-rtt) — 56.8 ms
* [New York to Los Angeles latency and RTT](/docs/network/latency/pairs/nyc-lax-rtt) — 58.9 ms
* [Ashburn to Los Angeles latency and RTT](/docs/network/latency/pairs/iad-lax-rtt) — 60.7 ms
* [Tokyo to Los Angeles latency and RTT](/docs/network/latency/pairs/tyo-lax-rtt) — 101.2 ms

**Same corridor (Europe → North America)**

* [London to New York latency and RTT](/docs/network/latency/pairs/lon-nyc-rtt) — 63.8 ms
* [Amsterdam to New York latency and RTT](/docs/network/latency/pairs/ams-nyc-rtt) — 68.6 ms
* [Paris to New York latency and RTT](/docs/network/latency/pairs/par-nyc-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](/opendata/latency/). Per-pair files are available at `/opendata/latency/latest/pairs/mrs-lax.pings.{csv,json,yaml}`. When citing, include the route, the measurement round timestamp, and the dataset version — for example: "Hats Network latency dataset, Marseille → Los Angeles round 2026-08-16T04:07:28Z, CC BY 4.0".

***

*Data auto-generated on August 16, 2026. Explore the [full interactive latency matrix](/docs/network/latency) or browse more [city-pair routes](/docs/network/latency/pairs).*

---

## License and attribution

- **Canonical source:** [View the human-readable HTML page](https://hatsnet.io/docs/network/latency/pairs/mrs-lax-rtt).
- **Original documentation:** © Hats Network Inc., licensed under [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/).
- **Public latency data:** © Hats Network Inc., licensed under [CC BY 4.0](https://creativecommons.org/licenses/by/4.0/).
- **Full terms:** [Content and Data License](https://hatsnet.io/docs/legal/content-and-data-license) — includes attribution requirements, third-party material, trademarks, source code and other exclusions.