São Paulo, Brazil → Seattle, USA RTT
Explore São Paulo, Brazil to Seattle, USA ICMP RTT, jitter, packet loss and fiber latency limits on the AS203314 network.
🇧🇷 São Paulo, Brazil (GRU) → 🇺🇸 Seattle, USA (SEA)
Measurement round: 2026-10-20T08:46:17Z.
São Paulo to Seattle averaged 155.4 ms, with a 152.41-167.66 ms range and no lost replies.
Ranked fifth of 19 outbound routes, it was among São Paulo's lower-latency results. The 3.1 ms standard deviation shows limited absolute dispersion.
Latency Summary
| Metric | Value |
|---|---|
| RTT | 155.4 ms |
| Jitter | 2.43 ms |
| Packet Loss | 0% |
| Standard Fiber Floor | 106.76 ms |
| Fiber Efficiency | 68.7% |
| Latency Tier | Fair |
| Source Region | South America |
| Destination Region | North America |
Ping Measurement Series
50 ICMP echo probes were recorded in this round. Individual replies and their distribution are shown below.
Ping series: GRU → SEA
50 ICMP echo samples at 100 ms intervals · round 2026-10-20T08:46:17Z · avg 155.4 ± 0.44 ms (SE)
Sample distribution: box = interquartile range (153.2–156.5 ms), median 154.4 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 (106.8 ms) for this route.
Full 50-sample dataset
| Seq | Offset (ms) | RTT (ms) |
|---|---|---|
| 1 | 0 | 153.04 |
| 2 | 100 | 153.37 |
| 3 | 200 | 152.44 |
| 4 | 300 | 152.64 |
| 5 | 400 | 152.97 |
| 6 | 500 | 152.64 |
| 7 | 600 | 156.30 |
| 8 | 700 | 154.90 |
| 9 | 800 | 153.09 |
| 10 | 900 | 152.41 |
| 11 | 1000 | 153.49 |
| 12 | 1100 | 167.66 |
| 13 | 1200 | 159.13 |
| 14 | 1300 | 155.54 |
| 15 | 1400 | 153.53 |
| 16 | 1500 | 153.34 |
| 17 | 1600 | 152.43 |
| 18 | 1700 | 156.53 |
| 19 | 1800 | 154.16 |
| 20 | 1900 | 153.79 |
| 21 | 2000 | 153.07 |
| 22 | 2100 | 152.50 |
| 23 | 2200 | 161.47 |
| 24 | 2300 | 159.33 |
| 25 | 2400 | 164.53 |
| 26 | 2500 | 159.34 |
| 27 | 2600 | 156.08 |
| 28 | 2700 | 155.47 |
| 29 | 2800 | 153.39 |
| 30 | 2900 | 153.69 |
| 31 | 3000 | 157.64 |
| 32 | 3100 | 154.44 |
| 33 | 3200 | 155.55 |
| 34 | 3300 | 154.40 |
| 35 | 3400 | 153.16 |
| 36 | 3500 | 158.16 |
| 37 | 3600 | 156.60 |
| 38 | 3700 | 155.19 |
| 39 | 3800 | 153.13 |
| 40 | 3900 | 153.06 |
| 41 | 4000 | 156.52 |
| 42 | 4100 | 154.11 |
| 43 | 4200 | 153.53 |
| 44 | 4300 | 155.37 |
| 45 | 4400 | 159.44 |
| 46 | 4500 | 156.09 |
| 47 | 4600 | 155.37 |
| 48 | 4700 | 157.35 |
| 49 | 4800 | 155.07 |
| 50 | 4900 | 153.55 |
Download This Route's Data
Download the probe round as CSV, JSON or YAML under CC BY 4.0. Citation details include the route and round timestamp.
Theoretical Fiber Latency
The propagation model uses public city-centre coordinates from GeoNames: São Paulo (-23.54750, -46.63611) and Seattle (47.60621, -122.33207). These are not facility coordinates or a surveyed cable path.
| Physical Reference | Value |
|---|---|
| WGS-84 geodesic distance | 10,902.3 km |
| Vacuum RTT floor | 72.73 ms |
| Standard fiber RTT floor () | 106.76 ms |
| Low-latency fiber material floor | 106.33 ms |
| Engineering floor (5% path allowance) | 112.12 ms |
| Research 1.33× mapped-fiber reference | 142 ms |
| Estimated unamplified path loss | 2289.5 dB |
| Transparent optical spans / inline amplifiers | 144 / 143 |
| Published RTT inflation over fiber floor | 1.46× |
The span count assumes 80 km optical spans. Attenuation is a power-loss term, not a propagation delay. See the model assumptions and equations.
Stability & Trend
Statistics from the same 50 replies. They describe this probe round, not continuous historical monitoring.
| Round Statistic | Value |
|---|---|
| Minimum RTT | 152.41 ms |
| Average RTT | 155.4 ms |
| Maximum RTT | 167.66 ms |
| Standard deviation | 3.1 ms |
| Stdev / average | 2.0% |
Estimated RTT trend
Modeled comparison, not historical probe measurements.
- Average
- 155.3 ms
- Minimum
- 154.0 ms
- Maximum
- 156.7 ms
- Average loss
- 0.03%
Route Context
- Departure PoP: São Paulo (GRU)
- Destination PoP: Seattle (SEA)
- Region overview: South America → North America
- Full global matrix: Backbone Latency Matrix
- Physical methodology: Theoretical Fiber Latency
Related City-Pair Routes
Reverse direction
- Seattle to São Paulo latency and RTT: 155.1 ms
Fastest routes departing São Paulo (GRU)
- São Paulo to Miami latency and RTT: 74 ms
- São Paulo to New York latency and RTT: 122 ms
- São Paulo to Ashburn latency and RTT: 128 ms
- São Paulo to Los Angeles latency and RTT: 131 ms
- São Paulo to London latency and RTT: 175.2 ms
Fastest routes arriving at Seattle (SEA)
- Los Angeles to Seattle latency and RTT: 27.4 ms
- New York to Seattle latency and RTT: 58.9 ms
- Ashburn to Seattle latency and RTT: 62.2 ms
- Miami to Seattle latency and RTT: 81.4 ms
- Tokyo to Seattle latency and RTT: 84.5 ms
About This Measurement
These ICMP measurements cover the two backbone endpoints. Access networks, routing policy and load can change an end user's result. A probe round is not an SLA.
The underlying replies are available under CC BY 4.0 in the Hats Network latency dataset. Per-pair files are available at /opendata/latency/latest/pairs/gru-sea.pings.{csv,json,yaml}. Cite the route, round timestamp and dataset version. Example: "Hats Network latency dataset, São Paulo → Seattle round 2026-10-20T08:46:17Z, CC BY 4.0".
Round published October 20, 2026. See the full interactive latency matrix or browse more city-pair routes.