# Marseille, France → Miami, USA RTT

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

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

During the 2026-08-16T04:07:28Z test round, ICMP echo measurements from Marseille, France, to Miami, USA, averaged 112.4 ms over 50 samples, with a minimum of 105.38 ms and a maximum of 129.43 ms. No packet loss was observed and the route was rated Good for latency.

The 7,752.4 km great-circle distance has a theoretical fiber-floor RTT of 75.92 ms, putting the measured average at 1.48 times that floor and at 67.5% fiber efficiency. The 5.13 ms standard deviation and 4.52 ms jitter point to a stable path over the test interval.

This route ranked 9th among the 19 outbound routes from Marseille measured in the same round, while the network-wide median standard-deviation-to-average ratio was 3.28%. The practical upshot is a reliable Mediterranean-to-Florida baseline with average latency near 112 ms and no packet loss.

## Latency Summary

| Metric               | Value                                                        |
| -------------------- | ------------------------------------------------------------ |
| RTT                  | **112.4 ms**                                                 |
| Jitter               | **4.52 ms**                                                  |
| Packet Loss          | **0%**                                                       |
| Standard Fiber Floor | **75.92 ms**                                                 |
| Fiber Efficiency     | **67.5%**                                                    |
| 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 [Miami](https://www.geonames.org/4164138) (25.77427, -80.19366). 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      | **1.48×**      |

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        | **105.38 ms** |
| Average RTT        | **112.4 ms**  |
| Maximum RTT        | **129.43 ms** |
| Standard deviation | **5.13 ms**   |
| Stdev / average    | **4.6%**      |

## Route Context

* Departure PoP: [Marseille (MRS)](/docs/network/latency/mrs-marseille)
* Destination PoP: [Miami (MIA)](/docs/network/latency/mia-miami)
* 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**

* [Miami to Marseille latency and RTT](/docs/network/latency/pairs/mia-mrs-rtt) — 113.7 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 Miami (MIA)**

* [Ashburn to Miami latency and RTT](/docs/network/latency/pairs/iad-mia-rtt) — 27.4 ms
* [New York to Miami latency and RTT](/docs/network/latency/pairs/nyc-mia-rtt) — 32.9 ms
* [Los Angeles to Miami latency and RTT](/docs/network/latency/pairs/lax-mia-rtt) — 57.3 ms
* [São Paulo to Miami latency and RTT](/docs/network/latency/pairs/gru-mia-rtt) — 74 ms
* [Seattle to Miami latency and RTT](/docs/network/latency/pairs/sea-mia-rtt) — 81.7 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-mia.pings.{csv,json,yaml}`. When citing, include the route, the measurement round timestamp, and the dataset version — for example: "Hats Network latency dataset, Marseille → Miami 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).*

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## License and attribution

- **Canonical source:** [View the human-readable HTML page](https://hatsnet.io/docs/network/latency/pairs/mrs-mia-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.