City Of Colorado Springs Municipal to Mahlon Sweet Field COS → EUG
890 nautical miles (1,024 statute miles) northwest on a straight line, true course 297°, about 289° magnetic at the departure end (variation 8E). At 120 knots that is 7 h 29 min at the quickest height in today's winds (4,500 ft, a 1-knot headwind), arriving about 5:44 am PDT (12:44 UTC), after sunset at the destination. Right now COS is VFR, wind from the south (180°) at 11 knots; EUG is VFR, wind from the east (090°) at 3 knots. 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: 4 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
- SIGMET 7C: thunderstorms (a convective SIGMET) up to 34,000 ft, moving from the southwest at 40 knots, until 12:55 am MDT (06:55 UTC). Over the first 10 nm of the route.
as issued
WSUS32 KKCI 120455 MKCC WST 120455 CONVECTIVE SIGMET 7C VALID UNTIL 0655Z TX OK CO NM FROM 40NNW PUB-70WSW LBL-40NE CME-40ESE RSK-30ENE HBU-40NNW PUB AREA TS MOV FROM 22040KT. TOPS TO FL340.
- 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 first 230 nm of the route.
- AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 38,000 ft. Over the first 320 nm of the route.
- AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the first 330 nm of the route.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 140 to 570 nm out.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 210 to 550 nm out.
- AIRMET TANGO 5W: strong surface winds (30 knots or more) (due to sustained surface winds greater than 30 knots). Near the route, 210 nm along the route.
- AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the route from 490 to 620 nm out.
- AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the last 210 nm of the route.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 760 to 780 nm out.
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 COS.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
- urgent E75L at 9,000 ft, 22 nm southwest, 10:30 pm MDT (04:30 UTC): remarks: low-level wind shear + 20K 1000-1500 above ground on approach. 100 nm along the route, 22 nm southwest of the line.
as filed, and in English
ASE UUA /OV ASE/TM 0430/FL090/TP E75L/RM LLWS +/- 20K 1000-1500 AGL ON APCH
- Report
- an urgent report filed through ASE
- Where
- over ASE
- Time
- 04:30 UTC
- Height
- at 9,000 ft
- Aircraft
- E75L
- Remarks
- low-level wind shear + 20K 1000-1500 above ground on approach
- urgent B737 at 7,600 ft, 39 nm northeast, 9:22 pm MDT (03:22 UTC): remarks: low-level wind shear 45 knots crosswind on final. 150 nm along the route, 39 nm northeast of the line.
as filed, and in English
HDN UUA /OV HDN/TM 0322/FL076/TP B737/RM LLWS 45 KTS CROSSWIND ON FINAL
- Report
- an urgent report filed through HDN
- Where
- over HDN
- Time
- 03:22 UTC
- Height
- at 7,600 ft
- Aircraft
- B737
- Remarks
- low-level wind shear 45 knots crosswind on final
- BE9L at 24,500 ft, 47 nm south, 8:21 pm MDT (02:21 UTC): moderate turbulence, remarks: ZDVWC-41. At the departure end, 47 nm south of the line.
as filed, and in English
PUB UA /OV PUB250040/TM 0221/FL245/TP BE9L/TB OCNL MOD/RM ZDVWC-41
- Report
- a routine report filed through PUB
- Where
- 40 nm west (250°) of PUB
- Time
- 02:21 UTC
- Height
- at 24,500 ft
- Aircraft
- BE9L
- Turbulence
- occasional moderate
- Remarks
- ZDVWC-41
- CL60 at 33,000 ft, 20 nm northeast, 8:35 pm MDT (02:35 UTC): remarks: mtw +/-100FT zdvwc. At the departure end, 20 nm northeast of the line.
as filed, and in English
COS UA /OV BRK080015/TM 0235/FL330/TP CL60/RM MTW +/-100FT ZDVWC
- Report
- a routine report filed through COS
- Where
- 15 nm east (080°) of BRK
- Time
- 02:35 UTC
- Height
- at 33,000 ft
- Aircraft
- CL60
- Remarks
- mtw +/-100FT zdvwc
- E170 at 22,500 ft, 2 nm northwest, 11:06 pm MDT (05:06 UTC): light to moderate turbulence up to 23,000 ft, remarks: during the descent tbarr star ZDVWC-13. 40 nm along the route, 2 nm northwest of the line.
as filed, and in English
DEN UA /OV DEN216057/TM 0506/FL225/TP E170/TB CONS LGT OCNL MOD BLO 230/RM DURD TBARR STAR. ZDVWC-13
- Report
- a routine report filed through DEN
- Where
- 57 nm southwest (216°) of DEN
- Time
- 05:06 UTC
- Height
- at 22,500 ft
- Aircraft
- E170
- Turbulence
- continuous light occasional moderate below 23,000 ft
- Remarks
- during the descent tbarr star ZDVWC-13
- CL35 at 41,000 ft, 29 nm north, 8:40 pm MDT (02:40 UTC): remarks: mtw +/-50FT a 15-knot loss of airspeed ZDVWC-05. 100 nm along the route, 29 nm north of the line.
as filed, and in English
EGE UA /OV RLG/TM 0240/FL410/TP CL35/RM MTW +/-50FT +/-15KT ZDVWC-05
- Report
- a routine report filed through EGE
- Where
- over RLG
- Time
- 02:40 UTC
- Height
- at 41,000 ft
- Aircraft
- CL35
- Remarks
- mtw +/-50FT a 15-knot loss of airspeed ZDVWC-05
- UAL2479 at 36,000 ft, 46 nm southwest, 9:11 pm MDT (03:11 UTC): no turbulence, wind 231° at 49 knots. 140 nm along the route, 46 nm southwest of the line.
as filed, and in English
ARP UAL2479 3910N 10753W 0311 F360 231/049KT TB SMTH IC
- Report
- a routine report filed through ARP
- BE20 at 16,000 ft, 23 nm south, 9:28 pm MDT (03:28 UTC): light chop turbulence, light rime icing, -3 °C, remarks: ZDVWC-11. 150 nm along the route, 23 nm south of the line.
as filed, and in English
RIL UA /OV RIL/TM 0328/FL160/TP BE20/TA M03/TB LGT CHOP/IC LGT RIME/RM ZDVWC-11
- Report
- a routine report filed through RIL
- Where
- over RIL
- Time
- 03:28 UTC
- Height
- at 16,000 ft
- Aircraft
- BE20
- Temperature
- −3 °C
- Turbulence
- light chop
- Icing
- light rime
- Remarks
- ZDVWC-11
- B737 at 10,000 ft, 31 nm north, 10:25 pm MDT (04:25 UTC): no icing, remarks: during the descent runway 5. 810 nm along the route, 31 nm north of the line.
as filed, and in English
RDM UA /OV RDM/TM 0425/FL100/TP B737/TA UNKN/IC NEG/RM DURD RWY 5
- Report
- a routine report filed through RDM
- Where
- over RDM
- Time
- 04:25 UTC
- Height
- at 10,000 ft
- Aircraft
- B737
- Temperature
- UNKN
- Icing
- none
- Remarks
- during the descent runway 5
- UAL737 at 31,000 ft, 5 nm northwest, 9:17 pm MDT (03:17 UTC): no turbulence, wind 358° at 94 knots. At the destination end, 5 nm northwest of the line.
as filed, and in English
ARP UAL737 4410N 12318W 0317 F310 358/094KT TB SMTH IC
- Report
- a routine report filed through ARP
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 9 forecast points nearest it (PUB, DEN, GJT, RKS, SLC, PIH, BOI, LKV, RDM). 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 | 360° at 4 kt | +1 kt | 1 °C | 119 kt | 7 h 29 min | 5:44 am PDT (12:44 UTC) |
| 6,500 ft | 360° at 4 kt | +1 kt | 0 °C | 119 kt | 7 h 29 min | 5:44 am PDT (12:44 UTC) |
| 8,500 ft | 220° at 9 kt | +2 kt | 0 °C | 118 kt | 7 h 33 min | 5:48 am PDT (12:48 UTC) |
| 10,500 ft | 230° at 13 kt | +6 kt | -2 °C | 114 kt | 7 h 48 min | 6:03 am PDT (13:03 UTC) |
| 12,500 ft | 240° at 18 kt | +9 kt | -5 °C | 111 kt | 8 h 01 min | 6:16 am PDT (13:16 UTC) |
| 14,500 ft | 230° at 22 kt | +9 kt | -9 °C | 111 kt | 8 h 01 min | 6:16 am PDT (13:16 UTC) |
| 16,500 ft | 230° at 25 kt | +9 kt | -12 °C | 111 kt | 8 h 01 min | 6:16 am PDT (13:16 UTC) |
| 18,000 ft FL180 | 220° at 28 kt | +9 kt | -15 °C | 111 kt | 8 h 01 min | 6:16 am PDT (13:16 UTC) |
| 24,000 ft FL240 | 230° at 33 kt | +12 kt | -25 °C | 108 kt | 8 h 14 min | 6:29 am PDT (13:29 UTC) |
| 30,000 ft FL300 | 230° at 38 kt | +16 kt | -31 °C | 104 kt | 8 h 33 min | 6:48 am PDT (13:48 UTC) |
| 34,000 ft FL340 | 230° at 46 kt | +22 kt | -34 °C | 98 kt | 9 h 05 min | 7:20 am PDT (14:20 UTC) |
| 39,000 ft FL390 | 230° at 46 kt | +20 kt | -42 °C | 100 kt | 8 h 54 min | 7:09 am PDT (14:09 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| PUB | used from 0 nm out; 53 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 50 nm out; 74 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° | ||
| GJT | used from 100 nm out; 75 nm from the line | 210/43 7° | 230/45 1° | 220/49 -12° | 220/62 -22° | 220/59 -28° | 230/60 -33° | 220/55 -45° | ||
| RKS | used from 200 nm out; 70 nm from the line | 200/41 | 220/44 1° | 220/35 -11° | 220/46 -24° | 210/53 -27° | 220/62 -35° | 230/61 -44° | ||
| SLC | used from 300 nm out; 44 nm from the line | 200/5 | 230/8 2° | 220/20 -2° | 210/40 -12° | 190/53 -25° | 210/62 -30° | 220/69 -34° | 220/64 -43° | |
| PIH | used from 400 nm out; 76 nm from the line | L/V | 240/13 1° | 240/15 -3° | 210/42 -15° | 200/70 -25° | 220/74 -29° | 220/71 -36° | 220/62 -43° | |
| BOI | used from 500 nm out; 87 nm from the line | 300/7 2° | 280/5 -4° | 210/16 -9° | 210/60 -20° | 210/75 -29° | 210/63 -32° | 220/64 -32° | 220/54 -39° | |
| LKV | used from 700 nm out; 82 nm from the line | 010/8 -8° | 350/13 -11° | 340/21 -21° | 360/60 -26° | 350/37 -32° | 310/26 -35° | 260/25 -39° | ||
| RDM | used from 750 nm out; 44 nm from the line | 040/17 -1° | 030/31 -8° | 010/29 -12° | 010/61 -19° | 360/95 -25° | 360/82 -36° | 360/40 -37° | 310/19 -40° |
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 |
|---|---|---|---|---|---|---|---|
| COS Colorado Springs, CO | departure | VFR Sky: a broken layer at 18,000 feet | from the south (180°) at 11 knots | 10+ mi | 18,000 ft | 6,187 ft | 10:54 pm MDT (04:54 UTC) |
| LXV Leadville, CO | 80 nm out, 11 nm south of the line | VFR Sky: a few clouds at 7,000 feet | from the north (350°) at 4 knots | 10+ mi | none | 9,933 ft | 04:53 UTC |
| EGE Eagle, CO | 110 nm out, 5 nm west of the line, tower | VFR Sky: a few clouds at 6,000 feet, a broken layer at 9,000 feet, overcast at 11,000 feet | from the west (280°) at 10 knots, gusting to 15 | 10+ mi | 9,000 ft | 6,547 ft | 04:56 UTC |
| VEL Vernal, UT | 240 nm out, 8 nm southwest of the line | VFR Sky: a broken layer at 7,000 feet, overcast at 10,000 feet | from the south-southwest (200°) at 13 knots, gusting to 25 | 10+ mi | 7,000 ft | 5,274 ft | 04:53 UTC |
| EVW Evanston, WY | 330 nm out, 12 nm northeast of the line | VFR Sky: overcast at 4,200 feet Weather: light rain | from the south (170°) at 8 knots | 10+ mi | 4,200 ft | 7,142 ft | 04:53 UTC |
| OGD Ogden, UT | 370 nm out, 11 nm south of the line, tower | VFR Sky: scattered clouds at 3,600 feet, a broken layer at 5,500 feet | from the south-southeast (160°) at 4 knots | 10+ mi | 5,500 ft | 4,472 ft | 04:53 UTC |
| TWF Twin Falls, ID | 500 nm out, 22 nm northeast of the line, tower | VFR Sky: scattered clouds at 4,200 feet, overcast at 5,000 feet | from the west-southwest (250°) at 8 knots | 10+ mi | 5,000 ft | 4,153 ft | 04:53 UTC |
| BNO Burns, OR | 700 nm out, 21 nm north of the line | VFR | from the north-northwest (340°) at 12 knots, gusting to 24 | 10+ mi | none | 4,148 ft | 04:53 UTC |
| BDN Bend, OR | 810 nm out, 22 nm northeast of the line | VFR Sky: overcast at 7,000 feet | from the west (280°) at 3 knots | 10+ mi | 7,000 ft | 3,459 ft | 04:55 UTC |
| EUG Eugene, OR | destination | VFR Sky: a few clouds at 9,500 feet | from the east (090°) at 3 knots | 10+ mi | none | 373 ft | 9:54 pm PDT (04:54 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 EUG when you get there the forecast at the estimated arrival, 5:44 am PDT (12:44 UTC)
Wind light and variable, visibility more than 6 miles, clear skies VFR
The whole forecast for EUG
- From Sun 5:00 pm PDT (00:00 UTC): wind from the north at 10 knots, visibility more than 6 miles, scattered clouds at 5,000 feet
- From Sun 8:00 pm PDT (03:00 UTC): wind light and variable, visibility more than 6 miles, clear skies
The forecast for COS, the departure
- From Sun 9:00 pm MDT (03:00 UTC): wind from the west-southwest at 12 knots, visibility more than 6 miles, a broken layer at 10,000 feet, a broken layer at 20,000 feet
- From Sun 10:00 pm MDT (04:00 UTC): wind from the south at 12 knots, visibility more than 6 miles, scattered clouds at 6,000 feet, a broken layer at 20,000 feet
- From Mon 6:00 am MDT (12:00 UTC): wind from the north-northeast at 8 knots, visibility more than 6 miles, clear skies
- From Mon 11:00 am MDT (17:00 UTC): wind from the south at 15 knots, gusting to 25, visibility more than 6 miles, scattered clouds at 12,000 feet
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 5 nm from the route, at the departure end · a hazard on the ground (fire-fighting, a chemical spill, rescue work) · until 13 October · ZDV
Daylight
Sunset at COS 6:25 pm MDT (00:25 UTC), at EUG 6:34 pm PDT (01:34 UTC) (civil twilight ends 7:03 pm PDT (02:03 UTC)). At 120 knots the arrival at EUG is before sunrise there (7:23 am PDT (14:23 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: City Of Colorado Springs Municipal, Mahlon Sweet Field.