# Berlin, Germany → Paris, France RTT

🇩🇪 **Berlin, Germany (BER)** → 🇫🇷 **Paris, France (PAR)**

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

In round 2026-08-16T04:07:28Z, the Berlin-to-Paris ICMP echo measurements averaged 15.6ms across 50 samples, with the full run between 14.9ms and 17.81ms and no packet loss.

This route sits 4th among the 19 outbound paths measured from Berlin in the same round. Its standard deviation of 0.63ms is about 4% of the average, slightly above the 3.28% median standard-deviation-to-average ratio across the route set, so the path is stable but not the steadiest in the group.

Against the 880.6km great-circle distance, the observed RTT is 1.81 times the theoretical fiber-floor estimate of 8.62ms, equating to 55.3% fiber efficiency. For an ultra-low-latency route, the jitter of 0.52ms and zero loss leave little to fault.

## Latency Summary

| Metric               | Value                                          |
| -------------------- | ---------------------------------------------- |
| RTT                  | **15.6 ms**                                    |
| Jitter               | **0.52 ms**                                    |
| Packet Loss          | **0%**                                         |
| Standard Fiber Floor | **8.62 ms**                                    |
| Fiber Efficiency     | **55.3%**                                      |
| Latency Tier         | Ultra-Low                                      |
| Source Region        | [Europe](/docs/network/latency/regions/europe) |
| Destination Region   | [Europe](/docs/network/latency/regions/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.

## 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 [Berlin](https://www.geonames.org/2950159) (52.52437, 13.41053) and [Paris](https://www.geonames.org/2988507) (48.85341, 2.34880). It does not disclose either facility address.

| Physical Reference                            | Value        |
| --------------------------------------------- | ------------ |
| WGS-84 geodesic distance                      | **880.6 km** |
| Vacuum RTT floor                              | **5.87 ms**  |
| Standard fiber RTT floor ($n_g=1.4679$)       | **8.62 ms**  |
| Low-latency fiber material floor              | **8.59 ms**  |
| Engineering floor (5% path allowance)         | **9.06 ms**  |
| Research 1.33× mapped-fiber reference         | **11.47 ms** |
| Estimated unamplified path loss               | **184.9 dB** |
| Transparent optical spans / inline amplifiers | **12 / 11**  |
| Published RTT inflation over fiber floor      | **1.81×**    |

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        | **14.9 ms**  |
| Average RTT        | **15.6 ms**  |
| Maximum RTT        | **17.81 ms** |
| Standard deviation | **0.63 ms**  |
| Stdev / average    | **4.0%**     |

## Route Context

* Departure PoP: [Berlin (BER)](/docs/network/latency/ber-berlin)
* Destination PoP: [Paris (PAR)](/docs/network/latency/par-paris)
* Region overview: [Europe](/docs/network/latency/regions/europe) → [Europe](/docs/network/latency/regions/europe)
* 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**

* [Paris to Berlin latency and RTT](/docs/network/latency/pairs/par-ber-rtt) — 15.5 ms

**Fastest routes departing Berlin (BER)**

* [Berlin to Frankfurt latency and RTT](/docs/network/latency/pairs/ber-fra-rtt) — 6.1 ms
* [Berlin to Amsterdam latency and RTT](/docs/network/latency/pairs/ber-ams-rtt) — 7.2 ms
* [Berlin to London latency and RTT](/docs/network/latency/pairs/ber-lon-rtt) — 15.2 ms
* [Berlin to Marseille latency and RTT](/docs/network/latency/pairs/ber-mrs-rtt) — 20.2 ms
* [Berlin to Moscow latency and RTT](/docs/network/latency/pairs/ber-mow-rtt) — 28.6 ms

**Fastest routes arriving at Paris (PAR)**

* [London to Paris latency and RTT](/docs/network/latency/pairs/lon-par-rtt) — 6.4 ms
* [Amsterdam to Paris latency and RTT](/docs/network/latency/pairs/ams-par-rtt) — 7 ms
* [Frankfurt to Paris latency and RTT](/docs/network/latency/pairs/fra-par-rtt) — 7.6 ms
* [Marseille to Paris latency and RTT](/docs/network/latency/pairs/mrs-par-rtt) — 8.9 ms
* [Moscow to Paris latency and RTT](/docs/network/latency/pairs/mow-par-rtt) — 44 ms

**Same corridor (Europe → Europe)**

* [Amsterdam to London latency and RTT](/docs/network/latency/pairs/ams-lon-rtt) — 5.2 ms
* [London to Amsterdam latency and RTT](/docs/network/latency/pairs/lon-ams-rtt) — 5.2 ms
* [Amsterdam to Frankfurt latency and RTT](/docs/network/latency/pairs/ams-fra-rtt) — 5.9 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/ber-par.pings.{csv,json,yaml}`. When citing, include the route, the measurement round timestamp, and the dataset version — for example: "Hats Network latency dataset, Berlin → Paris 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/ber-par-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.