ICMP RTT measurements from Ashburn, USA to Miami, USA: 27.4 ms average, 0% packet loss, and 0.98 ms jitter based on 50 probes.

🇺🇸 Ashburn, USA (IAD) → 🇺🇸 Miami, USA (MIA)

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

In the 2026-08-16T04:07:28Z measurement round, the Ashburn-to-Miami route averaged 27.4 ms ICMP RTT across 50 samples, with a minimum of 26.09 ms and a maximum of 30.01 ms; no packets were lost and jitter stayed at 0.98 ms.

Against the geodesic reference for 1,493.2 km, the vacuum floor is 9.96 ms and the direct fiber floor is 14.62 ms. The observed average is 1.87 times the fiber floor, giving a fiber efficiency of 53.4 percent—a useful baseline for judging how close this route's round-trip time is to the direct-fiber reference for that distance.

This pair is the second-ranked outbound route among the 19 Ashburn routes captured in the same round. Its standard deviation of 1.06 ms represents roughly 3.9 percent of the average, slightly above the 3.28 percent median relative variation seen across the route set, so the route is stable but not the most consistent in comparative terms.

Latency Summary

Metric	Value
RTT	27.4 ms
Jitter	0.98 ms
Packet Loss	0%
Standard Fiber Floor	14.62 ms
Fiber Efficiency	53.4%
Latency Tier	Ultra-Low
Source Region	North America
Destination Region	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.

Ping series: IAD → MIA

50 ICMP echo samples at 100 ms intervals · round 2026-08-16T04:07:28Z · avg 27.4 ± 0.15 ms (SE)

Sample distribution: box = interquartile range (26.6–28.1 ms), median 27.1 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 (14.6 ms) for this route.

Full 50-sample dataset

Seq	Offset (ms)	RTT (ms)
1	0	26.25
2	100	29.82
3	200	27.71
4	300	28.59
5	400	28.30
6	500	26.67
7	600	26.95
8	700	27.43
9	800	27.39
10	900	26.68
11	1000	26.50
12	1100	26.11
13	1200	26.09
14	1300	26.65
15	1400	27.78
16	1500	26.57
17	1600	26.41
18	1700	26.19
19	1800	26.56
20	1900	26.45
21	2000	27.09
22	2100	29.30
23	2200	27.35
24	2300	28.62
25	2400	26.83
26	2500	28.93
27	2600	27.60
28	2700	27.26
29	2800	30.01
30	2900	28.92
31	3000	28.23
32	3100	26.79
33	3200	26.77
34	3300	29.10
35	3400	27.04
36	3500	26.44
37	3600	26.47
38	3700	26.36
39	3800	26.80
40	3900	26.16
41	4000	29.31
42	4100	27.07
43	4200	26.39
44	4300	27.00
45	4400	26.83
46	4500	27.15
47	4600	27.91
48	4700	29.02
49	4800	28.10
50	4900	28.05

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 Ashburn (39.04372, -77.48749) and Miami (25.77427, -80.19366). It does not disclose either facility address.

Physical Reference	Value
WGS-84 geodesic distance	1,493.2 km
Vacuum RTT floor	9.96 ms
Standard fiber RTT floor ( $n_g=1.4679$ )	14.62 ms
Low-latency fiber material floor	14.56 ms
Engineering floor (5% path allowance)	15.36 ms
Research 1.33× mapped-fiber reference	19.45 ms
Estimated unamplified path loss	313.6 dB
Transparent optical spans / inline amplifiers	20 / 19
Published RTT inflation over fiber floor	1.87×

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 (2026-08-16T04:07:28Z) collected 50 ICMP echo samples on this route. Distribution statistics from that round:

Round Statistic	Value
Minimum RTT	26.09 ms
Average RTT	27.4 ms
Maximum RTT	30.01 ms
Standard deviation	1.06 ms
Stdev / average	3.9%

RTT trend

Estimated route stability across the selected time window.

Average: 27.4 ms
Minimum: 27.1 ms
Maximum: 27.6 ms
Average loss: 0.01%

Route Context

Departure PoP: Ashburn (IAD)
Destination PoP: Miami (MIA)
Region overview: North America → North America
Full global matrix: Backbone Latency Matrix
Physical methodology: Theoretical Fiber Latency

Reverse direction

Miami to Ashburn latency and RTT — 27.3 ms

Fastest routes departing Ashburn (IAD)

Ashburn to New York latency and RTT — 6 ms
Ashburn to Los Angeles latency and RTT — 60.7 ms
Ashburn to Seattle latency and RTT — 62.3 ms
Ashburn to London latency and RTT — 70.3 ms
Ashburn to Amsterdam latency and RTT — 75.2 ms

Fastest routes arriving at Miami (MIA)

New York to Miami latency and RTT — 32.9 ms
Los Angeles to Miami latency and RTT — 57.3 ms
São Paulo to Miami latency and RTT — 74 ms
Seattle to Miami latency and RTT — 81.7 ms
London to Miami latency and RTT — 101.9 ms

Same corridor (North America → North America)

New York to Ashburn latency and RTT — 6 ms
Seattle to Los Angeles latency and RTT — 25.9 ms
Los Angeles to Seattle latency and RTT — 26.9 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. Per-pair files are available at /opendata/latency/latest/pairs/iad-mia.pings.{csv,json,yaml}. When citing, include the route, the measurement round timestamp, and the dataset version — for example: "Hats Network latency dataset, Ashburn → Miami round 2026-08-16T04:07:28Z, CC BY 4.0".

Data auto-generated on August 16, 2026. Explore the full interactive latency matrix or browse more city-pair routes.

Ashburn, USA → Miami, USA RTT