racecast.io

All-Out Fallfest Half Marathon

Westminster, CO, USA

Partly cloudy throughout the day.

clear-night
9
clear-day
9
Details
partly-cloudy-day
9
partly-cloudy-day
9
partly-cloudy-day
9
partly-cloudy-day
8
partly-cloudy-day
8
clear-day
8
partly-cloudy-day
8
Pre-Race
Race
Post-Race
Our favorite marathon tested handheld water bottle. Nathan SpeedDraw Plus Insulated Flask.
When you buy through our links, we may earn a commission.
Wanna to know when the weather changes? .

Race Overview

The All-Out Fall Fest Half Marathon in Westminster, Colorado, offers runners a scenic journey along the Big Dry Creek Trail, leading to the picturesque Standley Lake Regional Park. Participants enjoy a mix of paved and gravel paths, with breathtaking views of the Flatirons and a notable stretch near the dam. The event embraces 80s nostalgia, adding a fun and energetic vibe to the race experience.
Wikipedia

FAQ

When is the 2027 All-Out Fallfest Half Marathon?

The 2027 All-Out Fallfest Half Marathon will be held on Saturday September 18, 2027.

What is the time limit for the All-Out Fallfest Half Marathon?

The time limit for the All-Out Fallfest Half Marathon is 4 hours.

All-Out Fallfest Half Marathon Course Map

Loading Course Map...

All-Out Fallfest Half Marathon Weather History

All-Out Fallfest Half Marathon Weather Averages

Average Temp: 64°, Average Low: 50°, Average High: 78°
Time8AM9AM10AM11AM12PM
Temp
54°
61°
66°
70°
74°
Feel54°61°66°70°73°
Rain-----
Wind3mph
4mph
4mph
5mph
6mph
Dew42°41°40°39°37°
RunScoreRun Score: 8Run Score: 9Run Score: 8Run Score: 8Run Score: 8

All-Out Fallfest Half Marathon 2026

Sep 19, 2026
Partly cloudy throughout the day with rain.
Low: 56°, High: 76°, Moderate Rain
Time8AM9AM10AM11AM12PM
Temp
partly-cloudy-day 59°
partly-cloudy-day 67°
clear-day 71°
clear-day 73°
partly-cloudy-day 74°
Feel59°67°71°73°74°
Rain-----
Wind5mph
6mph
6mph
6mph
5mph
Dew50°51°46°46°46°
RunScoreRun Score: 9Run Score: 9Run Score: 8Run Score: 8Run Score: 8

All-Out Fallfest Half Marathon 2025

Sep 13, 2025
Becoming cloudy in the afternoon with late afternoon rain.
Low: 56°, High: 73°, Light Rain
Time8AM9AM10AM11AM12PM
Temp
partly-cloudy-day 56°
clear-day 64°
partly-cloudy-day 69°
partly-cloudy-day 71°
partly-cloudy-day 72°
Feel56°64°69°71°72°
Rain-----
Wind1mph
1mph
4mph
5mph
6mph
Dew46°46°45°46°45°
RunScoreRun Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8

All-Out Fallfest Half Marathon 2024

Sep 14, 2024
Clear conditions throughout the day.
Low: 55°, High: 88°
Time8AM9AM10AM11AM12PM
Temp
clear-day 59°
clear-day 66°
clear-day 73°
clear-day 74°
clear-day 77°
Feel59°66°73°74°77°
Rain-----
Wind1mph
4mph
2mph
2mph
3mph
Dew40°40°40°41°39°
RunScoreRun Score: 8Run Score: 9Run Score: 8Run Score: 8Run Score: 8

All-Out Fallfest Half Marathon 2023

Sep 16, 2023
Clear conditions throughout the day.
Low: 46°, High: 74°
Time8AM9AM10AM11AM12PM
Temp
clear-day 50°
clear-day 56°
clear-day 61°
clear-day 65°
clear-day 69°
Feel50°56°61°65°69°
Rain-----
Wind1mph
2mph
1mph
1mph
5mph
Dew42°39°39°39°35°
RunScoreRun Score: 8Run Score: 9Run Score: 8Run Score: 8Run Score: 9

All-Out Fallfest Half Marathon 2022

Sep 16, 2022
Partly cloudy throughout the day.
Low: 51°, High: 79°
Time8AM9AM10AM11AM12PM
Temp
clear-day 56°
clear-day 63°
clear-day 68°
clear-day 72°
clear-day 76°
Feel56°63°68°72°76°
Rain-----
Wind2mph
3mph
4mph
7mph
4mph
Dew48°47°45°45°44°
RunScoreRun Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8

All-Out Fallfest Half Marathon 2021

Sep 18, 2021
Clear conditions throughout the day.
Low: 48°, High: 91°
Time8AM9AM10AM11AM12PM
Temp
clear-day 53°
clear-day 61°
clear-day 69°
clear-day 75°
clear-day 81°
Feel53°61°69°75°79°
Rain-----
Wind2mph
3mph
3mph
1mph
1mph
Dew42°40°39°34°34°
RunScoreRun Score: 8Run Score: 9Run Score: 8Run Score: 7Run Score: 7

All-Out Fallfest Half Marathon 2020

Sep 19, 2020
Partly cloudy throughout the day.
Low: 57°, High: 88°
Time8AM9AM10AM11AM12PM
Temp
partly-cloudy-day 60°
partly-cloudy-day 68°
partly-cloudy-day 74°
clear-day 81°
partly-cloudy-day 85°
Feel60°68°74°79°82°
Rain-----
Wind4mph
7mph
8mph
6mph
4mph
Dew41°42°39°39°33°
RunScoreRun Score: 9Run Score: 8Run Score: 8Run Score: 8Run Score: 8

All-Out Fallfest Half Marathon 2019

Sep 21, 2019
Becoming cloudy in the afternoon.
Low: 53°, High: 78°
Time8AM9AM10AM11AM12PM
Temp
clear-day 58°
clear-day 65°
clear-day 68°
clear-day 72°
clear-day 75°
Feel58°65°68°72°75°
Rain-----
Wind4mph
3mph
7mph
9mph
7mph
Dew30°31°31°31°28°
RunScoreRun Score: 9Run Score: 9Run Score: 9Run Score: 8Run Score: 8

All-Out Fallfest Half Marathon 2018

Sep 22, 2018
Clear conditions throughout the day.
Low: 47°, High: 86°
Time8AM9AM10AM11AM12PM
Temp
clear-day 54°
clear-day 62°
clear-day 70°
clear-day 77°
clear-day 82°
Feel54°62°70°77°80°
Rain-----
Wind3mph
5mph
3mph
4mph
7mph
Dew39°38°36°33°25°
RunScoreRun Score: 9Run Score: 9Run Score: 8Run Score: 8Run Score: 8

All-Out Fallfest Half Marathon 2017

Sep 23, 2017
Partly cloudy throughout the day with rain.
Low: 45°, High: 54°, Heavy Rain
Time8AM9AM10AM11AM12PM
Temp
cloudy 48°
partly-cloudy-day 50°
cloudy 50°
cloudy 52°
cloudy 52°
Feel46°48°50°52°52°
Rain-----
Wind4mph
5mph
3mph
5mph
8mph
Dew42°42°41°42°43°
RunScoreRun Score: 9Run Score: 9Run Score: 9Run Score: 9Run Score: 9

All-Out Fallfest Half Marathon 2016

Sep 24, 2016
Partly cloudy throughout the day.
Low: 42°, High: 68°, Light Rain
Time8AM9AM10AM11AM12PM
Temp
partly-cloudy-day 45°
clear-day 50°
partly-cloudy-day 57°
clear-day 61°
clear-day 65°
Feel45°50°57°61°65°
Rain-----
Wind2mph
4mph
5mph
8mph
15mph
Dew37°37°33°31°27°
RunScoreRun Score: 8Run Score: 9Run Score: 9Run Score: 9Run Score: 7

All-Out Fallfest Half Marathon 2015

Sep 26, 2015
Clear conditions throughout the day.
Low: 50°, High: 86°
Time8AM9AM10AM11AM12PM
Temp
clear-day 53°
clear-day 59°
clear-day 65°
clear-day 70°
clear-day 75°
Feel53°59°65°70°75°
Rain-----
Wind2mph
2mph
1mph
2mph
2mph
Dew45°45°45°44°42°
RunScoreRun Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8