Denver International to Gunnison-Crested Butte Regional DEN → GUC
132 nautical miles (152 statute miles) southwest on a straight line, true course 234°, about 226° magnetic at the departure end (variation 8E). At 120 knots that is 1 h 20 min at the quickest height in today's winds (8,500 ft, a 21-knot headwind), arriving about 10:26 pm MDT (04:26 UTC), after sunset at the destination. Right now DEN is VFR, wind from the south-southwest (200°) at 16 knots; GUC is VFR, wind calm. 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: 1,979 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 4W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the whole route.
- AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the whole route.
- AIRMET TANGO 1W: low-level wind shear (due to air speed loss or gain of 20 knots or more below 2,000 ft above the ground). Over the last 104 nm of the route.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the last 75 nm of 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 DEN.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
- urgent B407 at 10,000 ft, 43 nm southeast, 8:13 pm MDT (02:13 UTC): moderate to severe turbulence. 47 nm along the route, 43 nm southeast of the line.
as filed, and in English
COS UUA /OV 10 W COS/TM 0213/FL100/TP B407/TB MDT-SEV
- Report
- an urgent report filed through COS
- Where
- 10 west cos
- Time
- 02:13 UTC
- Height
- at 10,000 ft
- Aircraft
- B407
- Turbulence
- mdt-sev
- B738 at 23,000 ft, 21 nm northwest, 8:34 pm MDT (02:34 UTC): moderate turbulence, remarks: during the climb ZDVWC-05. 19 nm along the route, 21 nm northwest of the line.
as filed, and in English
DEN UA /OV DVV270030/TM 0234/FL230/TP B738/TB MOD /RM DURC ZDVWC-05
- Report
- a routine report filed through DEN
- Where
- 30 nm west (270°) of DVV
- Time
- 02:34 UTC
- Height
- at 23,000 ft
- Aircraft
- B738
- Turbulence
- moderate
- Remarks
- during the climb ZDVWC-05
- BCS1 at 24,000 ft, 21 nm northwest, 7:30 pm MDT (01:30 UTC): moderate turbulence from 22,000 ft to 24,000 ft, remarks: during the climb ZDVWC-05. 19 nm along the route, 21 nm northwest of the line.
as filed, and in English
DEN UA /OV DVV270030/TM 0130/FL240/TP BCS1/TB MOD 220-240/RM DURC ZDVWC-05
- Report
- a routine report filed through DEN
- Where
- 30 nm west (270°) of DVV
- Time
- 01:30 UTC
- Height
- at 24,000 ft
- Aircraft
- BCS1
- Turbulence
- moderate from 22,000 ft to 24,000 ft
- Remarks
- during the climb ZDVWC-05
- GLF4 at 25,000 ft, 9 nm northwest, 8:05 pm MDT (02:05 UTC): moderate turbulence, remarks: during the climb ZDVWC-05. 38 nm along the route, 9 nm northwest of the line.
as filed, and in English
DEN UA /OV FQF250040/TM 0205/FL250/TP GLF4/TB MOD /RM DURC ZDVWC-05
- Report
- a routine report filed through DEN
- Where
- 40 nm west (250°) of FQF
- Time
- 02:05 UTC
- Height
- at 25,000 ft
- Aircraft
- GLF4
- Turbulence
- moderate
- Remarks
- during the climb ZDVWC-05
- B738 at 18,000 ft, 25 nm southeast, 8:02 pm MDT (02:02 UTC): moderate chop turbulence from 18,000 ft to 25,000 ft, remarks: during the climb ZDVWC-41. 57 nm along the route, 25 nm southeast of the line.
as filed, and in English
COS UA /OV BRK270030/TM 0202/FL180/TP B738/TB MOD CHOP 180-250/RM DURC ZDVWC-41
- Report
- a routine report filed through COS
- Where
- 30 nm west (270°) of BRK
- Time
- 02:02 UTC
- Height
- at 18,000 ft
- Aircraft
- B738
- Turbulence
- moderate chop from 18,000 ft to 25,000 ft
- Remarks
- during the climb ZDVWC-41
- B737 descending, 3 nm south, 8:29 pm MDT (02:29 UTC): no turbulence up to 10,000 ft. At the departure end, 3 nm south of the line.
as filed, and in English
DEN UA /OV DEN/TM 0229/FLDURD/TP B737/TB NEG BLO 100
- Report
- a routine report filed through DEN
- Where
- over DEN
- Time
- 02:29 UTC
- Height
- during the descent
- Aircraft
- B737
- Turbulence
- no below 10,000 ft
- B737 descending, 3 nm south, 7:23 pm MDT (01:23 UTC): no turbulence up to 10,000 ft. At the departure end, 3 nm south of the line.
as filed, and in English
DEN UA /OV DEN/TM 0123/FLDURD/TP B737/TB NEG BLO 100
- Report
- a routine report filed through DEN
- Where
- over DEN
- Time
- 01:23 UTC
- Height
- during the descent
- Aircraft
- B737
- Turbulence
- no below 10,000 ft
- A321 descending, 3 nm south, 6:26 pm MDT (00:26 UTC): no turbulence up to 10,000 ft. At the departure end, 3 nm south of the line.
as filed, and in English
DEN UA /OV DEN/TM 0026/FLDURD/TP A321/TB NEG BLO 100
- Report
- a routine report filed through DEN
- Where
- over DEN
- Time
- 00:26 UTC
- Height
- during the descent
- Aircraft
- A321
- Turbulence
- no below 10,000 ft
- B737 at 14,000 ft, 24 nm southeast, 6:20 pm MDT (00:20 UTC): light to moderate turbulence, remarks: light to moderate from 14,000 ft to 16,000 ft occn light above 16,000 ft. 19 nm along the route, 24 nm southeast of the line.
as filed, and in English
DEN UA /OV DEN170025/TM 0020/FL140/TP B737/TB LGT-MOD/RM LGT-MOD 140-160 OCCN LGT ABOVE 160
- Report
- a routine report filed through DEN
- Where
- 25 nm south (170°) of DEN
- Time
- 00:20 UTC
- Height
- at 14,000 ft
- Aircraft
- B737
- Turbulence
- light to moderate
- Remarks
- light to moderate from 14,000 ft to 16,000 ft occn light above 16,000 ft
- GLF6 at 40,000 ft, 32 nm southeast, 6:48 pm MDT (00:48 UTC): light to moderate chop turbulence, remarks: ZDVWC-46. 28 nm along the route, 32 nm southeast of the line.
as filed, and in English
COS UA /OV COS340020/TM 0048/FL400/TP GLF6/TB LGT-MOD CHOP/RM ZDVWC-46
- Report
- a routine report filed through COS
- Where
- 20 nm north (340°) of COS
- Time
- 00:48 UTC
- Height
- at 40,000 ft
- Aircraft
- GLF6
- Turbulence
- light to moderate chop
- Remarks
- ZDVWC-46
- E55P at 38,000 ft, 25 nm southeast, 7:23 pm MDT (01:23 UTC): light chop turbulence, remarks: ZDVWC-05. 38 nm along the route, 25 nm southeast of the line.
as filed, and in English
DEN UA /OV FQF200040/TM 0123/FL380/TP E55P/TB LGT CHOP/RM ZDVWC-05
- Report
- a routine report filed through DEN
- Where
- 40 nm south (200°) of FQF
- Time
- 01:23 UTC
- Height
- at 38,000 ft
- Aircraft
- E55P
- Turbulence
- light chop
- Remarks
- ZDVWC-05
- B737 at 25,000 ft, 41 nm southeast, 6:29 pm MDT (00:29 UTC): light rime icing, 0 °C, remarks: during the climb ZDVWC-29. 47 nm along the route, 41 nm southeast of the line.
as filed, and in English
COS UA /OV BRK242015/TM 0029/FL250/TP B737/SK TOP280/TA 00/IC LGT RIME/RM DURC ZDVWC-29
- Report
- a routine report filed through COS
- Where
- 15 nm southwest (242°) of BRK
- Time
- 00:29 UTC
- Height
- at 25,000 ft
- Aircraft
- B737
- Sky
- TOP280
- Temperature
- 0 °C
- Icing
- light rime
- Remarks
- during the climb ZDVWC-29
- B738 at 32,000 ft, 44 nm northwest, 7:42 pm MDT (01:42 UTC): light to moderate turbulence up to 30,000 ft, remarks: during the climb ZDVWC-05. 66 nm along the route, 44 nm northwest of the line.
as filed, and in English
EGE UA /OV RLG160014/TM 0142/FL320/TP B738/TB LGT-MOD BLO 300/RM DURC ZDVWC-05
- Report
- a routine report filed through EGE
- Where
- 14 nm south (160°) of RLG
- Time
- 01:42 UTC
- Height
- at 32,000 ft
- Aircraft
- B738
- Turbulence
- light to moderate below 30,000 ft
- Remarks
- during the climb ZDVWC-05
- SW4 at 20,000 ft, 0 nm southeast, 7:00 pm MDT (01:00 UTC): light rime icing, 0 °C, remarks: ZDVWC-12. At the destination end, 0 nm southeast of the line.
as filed, and in English
GUC UA /OV GUC/TM 0100/FL200/TP SW4/TA 00/IC LGT RIME/RM ZDVWC-12
- Report
- a routine report filed through GUC
- Where
- over GUC
- Time
- 01:00 UTC
- Height
- at 20,000 ft
- Aircraft
- SW4
- Temperature
- 0 °C
- Icing
- light rime
- Remarks
- ZDVWC-12
1 more routine reports are on the map.
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 2 forecast points nearest it (DEN, ALS). A plus sign is a headwind, a minus sign a tailwind.
| Height | Average wind | Head- or tailwind | Temperature | Ground speed | Time en route | Arrival |
|---|---|---|---|---|---|---|
| 8,500 ft | 240° at 21 kt | +21 kt | 14 °C | 99 kt | 1 h 20 min | 10:26 pm MDT (04:26 UTC) |
| 10,500 ft | 240° at 33 kt | +33 kt | 8 °C | 87 kt | 1 h 31 min | 10:37 pm MDT (04:37 UTC) |
| 12,500 ft | 240° at 42 kt | +41 kt | 4 °C | 79 kt | 1 h 40 min | 10:46 pm MDT (04:46 UTC) |
| 14,500 ft | 230° at 44 kt | +44 kt | 0 °C | 76 kt | 1 h 44 min | 10:50 pm MDT (04:50 UTC) |
| 16,500 ft | 230° at 47 kt | +47 kt | -5 °C | 73 kt | 1 h 48 min | 10:54 pm MDT (04:54 UTC) |
| 18,000 ft FL180 | 220° at 50 kt | +49 kt | -8 °C | 71 kt | 1 h 52 min | 10:58 pm MDT (04:58 UTC) |
| 24,000 ft FL240 | 220° at 53 kt | +52 kt | -21 °C | 68 kt | 1 h 56 min | 11:02 pm MDT (05:02 UTC) |
| 30,000 ft FL300 | 230° at 60 kt | +60 kt | -29 °C | 60 kt | 2 h 12 min | 11:18 pm MDT (05:18 UTC) |
| 34,000 ft FL340 | 240° at 62 kt | +61 kt | -34 °C | 59 kt | 2 h 14 min | 11:20 pm MDT (05:20 UTC) |
| 39,000 ft FL390 | 240° at 52 kt | +52 kt | -45 °C | 68 kt | 1 h 56 min | 11:02 pm MDT (05:02 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| DEN | used from 0 nm out; 24 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° | ||
| ALS | used from 94 nm out; 85 nm from the line | 230/37 4° | 220/54 -9° | 230/62 -22° | 240/77 -26° | 240/74 -33° | 230/59 -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 |
|---|---|---|---|---|---|---|---|
| DEN Denver, CO | departure | VFR Sky: a few clouds at 14,000 feet, a broken layer at 22,000 feet | from the south-southwest (200°) at 16 knots | 10+ mi | 22,000 ft | 5,433 ft | 8:53 pm MDT (02:53 UTC) |
| APA Denver, CO | 19 nm out, 9 nm southeast of the line, tower | VFR Sky: a few clouds at 14,000 feet, a broken layer at 22,000 feet | from the south-southwest (200°) at 21 knots, gusting to 34 | 10+ mi | 22,000 ft | 5,884 ft | 02:53 UTC |
| LXV Leadville, CO | 85 nm out, 15 nm northwest of the line | VFR Sky: a few clouds at 3,600 feet, a few clouds at 4,400 feet | from the south-southeast (160°) at 11 knots, gusting to 20 | 10+ mi | none | 9,933 ft | 02:53 UTC |
| AEJ Buena Vista, CO | 94 nm out, 10 nm southeast of the line | VFR Sky: a broken layer at 6,000 feet, overcast at 7,000 feet | from the south (190°) at 6 knots | 10+ mi | 6,000 ft | 7,950 ft | 02:55 UTC |
| GUC Gunnison, CO | destination | VFR Sky: overcast at 8,500 feet | calm | 10+ mi | 8,500 ft | 7,679 ft | 8:56 pm MDT (02:56 UTC) |
The highest airport on this list sits at 9,933 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At GUC when you get there the forecast at the estimated arrival, 10:26 pm MDT (04:26 UTC)
Wind from the south at 9 knots, visibility more than 6 miles, scattered clouds at 4,500 feet, a broken layer at 8,000 feet VFR
The whole forecast for GUC
- From Sun 6:00 pm MDT (00:00 UTC): wind from the south-southeast at 11 knots, gusting to 23, visibility more than 6 miles, scattered clouds at 9,000 feet, a broken layer at 12,000 feet
- 30% chance between Sun 6:00 pm MDT (00:00 UTC) and 9:00 pm MDT (03:00 UTC): visibility 4 miles, light rain showers, a broken layer at 6,000 feet
- From Sun 10:00 pm MDT (04:00 UTC): wind from the south at 9 knots, visibility more than 6 miles, scattered clouds at 4,500 feet, a broken layer at 8,000 feet
- From Mon 1:00 am MDT (07:00 UTC): wind from the southwest at 8 knots, visibility more than 6 miles, a few clouds at 5,000 feet, scattered clouds at 13,000 feet
- From Mon 3:00 am MDT (09:00 UTC): wind from the south-southwest at 5 knots, visibility more than 6 miles, a few clouds at 7,000 feet, scattered clouds at 20,000 feet
- From Mon 1:00 pm MDT (19:00 UTC): wind from the west-southwest at 8 knots, visibility more than 6 miles, a few clouds at 7,000 feet, scattered clouds at 25,000 feet
The forecast for DEN, the departure
- From Sun 9:00 pm MDT (03:00 UTC): wind from the south at 14 knots, gusting to 23, visibility more than 6 miles, a few clouds at 14,000 feet, a broken layer at 22,000 feet
- From Mon 1:00 am MDT (07:00 UTC): wind from the south at 11 knots, visibility more than 6 miles, a few clouds at 22,000 feet
- From Mon 9:00 am MDT (15:00 UTC): wind from the southwest at 14 knots, gusting to 21, visibility more than 6 miles, clear skies
- From Mon 4:00 pm MDT (22:00 UTC): wind from the south at 9 knots, visibility more than 6 miles, clear skies
- From Mon 7:00 pm MDT (01:00 UTC): wind from the northeast at 8 knots, visibility more than 6 miles, clear skies
Temporary flight restrictions on the line or within 25 nm of it
- 6/8784 LAKE GEORGE, CO, Sunday, October 11, 2026 through Tuesday, October 13, 2026 UTC 20 nm from the route, 57 nm along the route · a hazard on the ground (fire-fighting, a chemical spill, rescue work) · until 13 October · ZDV
Daylight
Sunset at DEN 6:24 pm MDT (00:24 UTC), at GUC 6:34 pm MDT (00:34 UTC) (civil twilight ends 7:00 pm MDT (01:00 UTC)). At 120 knots the arrival at GUC is after sunset there (6:35 pm MDT (00:35 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: Denver International, Gunnison-Crested Butte Regional.