Robert Gray Army Airfield to Denver International GRK → DEN
625 nautical miles (719 statute miles) northwest on a straight line, true course 330°, about 326° magnetic at the departure end (variation 4E). At 120 knots that is 4 h 32 min at the quickest height in today's winds (4,500 ft, a 18-knot tailwind), arriving about 6:16 am MDT (12:16 UTC), after sunset at the destination. For planning, not a briefing: the legal preflight briefing comes from Flight Service (1-800-WX-BRIEF) or the FAA's own tools. Airlines fly this pair: 11 flights in the DOT's last twelve reported months, the route's page.
The route the straight line, the warnings crossed, restrictions, pilot reports and the airports along the way · click a mark for its words
Green, blue, red and purple airport dots are the flying conditions reported there now (VFR, marginal VFR, IFR, low IFR); grey means no report. Red areas are SIGMETs, orange areas AIRMETs, hatched red areas temporary flight restrictions. Map tiles: OpenFreeMap, data © OpenStreetMap contributors.
Warnings the route crosses SIGMETs and AIRMETs whose area the line passes through or comes within 25 nm of
- AIRMET TANGO 3W: low-level wind shear (due to air speed loss or gain of 20 knots or more below 2,000 ft above the ground), from 1:00 am CDT (06:00 UTC). Over the route from 347 to 496 nm out.
- AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft, from 1:00 am CDT (06:00 UTC). Over the last 139 nm of the route.
- AIRMET TANGO 2W: moderate turbulence above 18,000 ft from 35,000 ft to 45,000 ft, from 1:00 am CDT (06:00 UTC). Near the route, 506 nm along the route.
A SIGMET warns of weather hazardous to all aircraft; an AIRMET of weather that matters to small aircraft and to flying without instruments. "From 60 to 180 nm out" is measured along the route from GRK.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
Not fetched just now.
Winds aloft along the route, and the time en route the forecast for use 02:00–09:00 UTC · at 120 knots true airspeed
The westbound cruising heights for this course (VFR: even thousands plus 500 ft; above 18,000 ft the forecast levels), with the wind averaged along the line from the 6 forecast points nearest it (ABI, SPS, AMA, GCK, PUB, DEN). A plus sign is a headwind, a minus sign a tailwind.
| Height | Average wind | Head- or tailwind | Temperature | Ground speed | Time en route | Arrival |
|---|---|---|---|---|---|---|
| 4,500 ft | 210° at 35 kt | −18 kt | 18 °C | 138 kt | 4 h 32 min | 6:16 am MDT (12:16 UTC) |
| 6,500 ft | 210° at 33 kt | −14 kt | 17 °C | 134 kt | 4 h 40 min | 6:24 am MDT (12:24 UTC) |
| 8,500 ft | 220° at 27 kt | −6 kt | 14 °C | 126 kt | 4 h 58 min | 6:42 am MDT (12:42 UTC) |
| 10,500 ft | 230° at 25 kt | −2 kt | 11 °C | 122 kt | 5 h 07 min | 6:51 am MDT (12:51 UTC) |
| 12,500 ft | 240° at 25 kt | 0 | 7 °C | 120 kt | 5 h 12 min | 6:56 am MDT (12:56 UTC) |
| 14,500 ft | 230° at 26 kt | −2 kt | 2 °C | 122 kt | 5 h 07 min | 6:51 am MDT (12:51 UTC) |
| 16,500 ft | 230° at 27 kt | −4 kt | -2 °C | 124 kt | 5 h 02 min | 6:46 am MDT (12:46 UTC) |
| 18,000 ft FL180 | 230° at 27 kt | −5 kt | -6 °C | 125 kt | 5 h | 6:44 am MDT (12:44 UTC) |
| 24,000 ft FL240 | 240° at 35 kt | 0 | -18 °C | 120 kt | 5 h 12 min | 6:56 am MDT (12:56 UTC) |
| 30,000 ft FL300 | 240° at 56 kt | +6 kt | -28 °C | 114 kt | 5 h 29 min | 7:13 am MDT (13:13 UTC) |
| 34,000 ft FL340 | 250° at 52 kt | +13 kt | -37 °C | 107 kt | 5 h 50 min | 7:34 am MDT (13:34 UTC) |
| 39,000 ft FL390 | 260° at 46 kt | +19 kt | -49 °C | 101 kt | 6 h 11 min | 7:55 am MDT (13:55 UTC) |
Based on data from the 12th at 00:00 UTC; valid on the 12th at 06:00 UTC for use 02:00 to 09:00 UTC; temperatures above 24,000 ft are below zero. Heights are above sea level; a height is left out when the forecast has no wind for it over most of the line (the ground is higher). Ground speed is the airspeed less the headwind; the time en route is for the straight line and ignores climb, descent and routing around weather.
The forecast points as issued
| Point | From | 3,000 | 6,000 | 9,000 | 12,000 | 18,000 | 24,000 | 30,000 | 34,000 | 39,000 |
|---|---|---|---|---|---|---|---|---|---|---|
| ABI | used from 0 nm out; 101 nm from the line | 200/31 17° | 210/21 15° | 240/15 9° | 250/14 -4° | 250/24 -14° | 250/36 -28° | 270/35 -38° | 290/41 -50° | |
| SPS | used from 149 nm out; 61 nm from the line | 200/39 | 220/28 17° | 230/27 12° | 240/15 9° | 250/15 -4° | 250/24 -15° | 260/45 -28° | 270/43 -39° | 280/45 -51° |
| AMA | used from 248 nm out; 55 nm from the line | 210/38 | 230/29 14° | 240/29 7° | 220/27 -5° | 240/37 -18° | 240/66 -28° | 250/59 -37° | 260/47 -49° | |
| GCK | used from 397 nm out; 91 nm from the line | 220/48 21° | 230/37 14° | 250/30 8° | 230/37 -6° | 240/37 -20° | 240/69 -28° | 250/67 -37° | 260/58 -48° | |
| PUB | used from 446 nm out; 85 nm from the line | 230/25 13° | 230/32 6° | 220/44 -8° | 230/49 -21° | 240/70 -28° | 240/67 -34° | 240/58 -46° | ||
| DEN | used from 595 nm out; 15 nm from the line | 240/21 14° | 250/44 6° | 220/49 -8° | 220/49 -21° | 230/54 -30° | 240/57 -35° | 240/49 -45° |
The weather now: both ends and the airports along the way public airports with a weather report within 25 nm of the line, one for each stretch
| Airport | Where | Conditions | Wind | Visibility | Ceiling | Elevation | Reported |
|---|---|---|---|---|---|---|---|
| GRK Fort Hood (Killeen), TX | departure | no report just now | 1,015 ft | ||||
| MNZ Hamilton, TX | 40 nm out, 4 nm northeast of the line | no report just now | 1,304 ft | ||||
| ETN Eastland, TX | 99 nm out, 4 nm south of the line | no report just now | 1,467 ft | ||||
| CDS Childress, TX | 238 nm out, 2 nm southwest of the line | no report just now | 1,953 ft | ||||
| PPA Pampa, TX | 317 nm out, 6 nm east of the line | no report just now | 3,245 ft | ||||
| EHA Elkhart, KS | 407 nm out, 15 nm northeast of the line | no report just now | 3,621 ft | ||||
| LAA Lamar, CO | 486 nm out, 17 nm northeast of the line | no report just now | 3,705 ft | ||||
| LHX La Junta, CO | 506 nm out, 16 nm southwest of the line | no report just now | 4,228 ft | ||||
| LIC Limon, CO | 565 nm out, 19 nm northeast of the line | no report just now | 5,374 ft | ||||
| DEN Denver, CO | destination | no report just now | 5,433 ft |
The highest airport on this list sits at 5,433 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At DEN when you get there the forecast at the estimated arrival, 6:16 am MDT (12:16 UTC)
DEN has no terminal forecast; use the nearest airport that does.
Temporary flight restrictions on the line or within 25 nm of it
- 6/8911 DENVER, CO, Monday, October 12, 2026 UTC 8 nm from the route, at the destination end · a hazard on the ground (fire-fighting, a chemical spill, rescue work) · today · ZDV
Daylight
Sunset at GRK 7:02 pm CDT (00:02 UTC), at DEN 6:22 pm MDT (00:22 UTC) (civil twilight ends 6:49 pm MDT (00:49 UTC)). At 120 knots the arrival at DEN is before sunrise there (7:05 am MDT (13:05 UTC)).
Each restriction opens the FAA's own page with the exact area, heights and times. Ordinary notices to air missions (closed runways, lights out) are not shown: the FAA's notice search is not open to sites like this one at this time.
Radar and forecast charts for the regions crossed government pictures, the latest each time the page loads
Sources: the Aviation Weather Center's data service (SIGMETs, AIRMETs, graphical AIRMETs, pilot reports, winds and temperatures aloft, observations and terminal forecasts), the National Weather Service radar, the Weather Prediction Center's charts, the FAA's temporary flight restriction list and shapes, and the FAA's airport file for the positions, elevations and magnetic variation. Fetched when the page is viewed and kept a few minutes. Each leg is the straight line between its two airports; airways, terrain and airspace are not considered. The airports in detail: Robert Gray Army Airfield, Denver International.