Irving Frost Marathon

Irving, TX, USA · December 19, 2026·
partly-cloudy-day45°·55° high·Breezy·Dry
9
Register

Irving Frost Marathon race day weather

partly-cloudy-day
45°at start
60° high
Breezy
Dry
Your goal
0:00:00

Cool morning, steady warming

Runners will face temperatures starting at 45°F and rising to 55°F, with light winds from the SE peaking at 10 mph. Humidity will be moderate at 63%, which may feel slightly warmer as the race progresses. Runners should start conservatively and consider hydration strategies as conditions warm, particularly in the later laps.

Race day forecast available in 24 days
partly-cloudy-night10
partly-cloudy-night10
partly-cloudy-night10
partly-cloudy-day10
partly-cloudy-day10
partly-cloudy-day10
partly-cloudy-day9
partly-cloudy-day9
partly-cloudy-day8
partly-cloudy-day8
partly-cloudy-day8
partly-cloudy-day8

Pace Calculator

26.2mi
0:00:00
HH:MM:SS
Pace
—

Enter a finish time to see what race day does to it.

Common Goals:

Get forecast alerts for Irving Frost Marathon

We'll text or email you when the forecast shifts — so you can adjust gear, pacing, and strategy. Max one per day.

Irving Frost Marathon route and elevation

The Irving Frost Marathon course has about 273 ft (83 m) of climbing and 271 ft (83 m) of descent, and finishes near the elevation it starts. It is flatter than 73% of the marathon courses racecast.io has mapped, measured by what the hills cost in time. It has no steep miles: no mile climbs more than 55 ft (17 m).

What the hills cost

  • 3:30 on a flat course is about 3:30:25 here (25 seconds slower).
  • 4:00 on a flat course is about 4:00:30 here (30 seconds slower).
  • 4:30 on a flat course is about 4:30:30 here (30 seconds slower).

Hills only, priced mile by mile on the course map. The pace calculator above adds the race-day weather.

Even-effort splits for a 3:30, 4:00 or 4:30 finish
The Irving Frost Marathon mile splits at even effort for three finish times, with each mile's climb and descent
MileClimbDescent3:304:004:30
14 ft14 ft7:579:0510:13
241 ft25 ft8:079:1710:27
311 ft25 ft7:579:0510:13
46 ft8 ft7:599:0710:15
517 ft12 ft8:029:1110:20
67 ft12 ft7:589:0710:16
715 ft11 ft8:029:1110:19
816 ft20 ft7:599:0710:15
912 ft1 ft8:059:1410:24
108 ft14 ft7:599:0710:15
118 ft14 ft7:589:0710:16
125 ft3 ft8:019:0910:18
1351 ft33 ft8:089:1910:28
147 ft25 ft7:569:0310:11
1519 ft16 ft8:019:1010:19
1632 ft33 ft7:599:0810:16
176 ft8 ft8:009:0710:16
1815 ft13 ft8:009:1010:18
1910 ft12 ft7:599:0710:16
207 ft10 ft7:599:0810:16
2115 ft15 ft8:009:0810:17
2214 ft0 ft8:079:1610:26
2311 ft16 ft7:589:0710:15
248 ft13 ft7:599:0710:15
2511 ft9 ft8:009:0910:18
2633 ft27 ft8:039:1210:21
Last 0.20 ft0 ft1:472:022:17

Explore the Irving Frost Marathon course with the weather and your pace along the route, or compare it with other races.

Race Plan

Get your personalized Irving Frost Marathon race plan

A mile-by-mile breakdown of where your time goes, weather-adjusted splits, fueling timeline with aid stations, packing checklist, carb tracker, spectator guide, all built around your goal and race-day conditions.

Race Pace
Weather Splits
Nutrition
Gear & Packing
T-Minus
Carb Tracker
Spectator Guide
Race Band

About the Irving Frost Marathon

The Irving Frost Marathon is a December race in Las Colinas, Irving, Texas, with the marathon, half marathon, 10K and 5K all starting and finishing at the Plaza at Toyota Music Factory. The marathon is a Boston Marathon qualifier on a flat course through Las Colinas Urban Center and along the Campion Trail. It is the winter race of the Irving Marathon Running Series, and proceeds go to the Irving Schools Foundation for scholarships for Irving ISD student volunteers. Source

Race weekend

Saturday, December 19
7:30 AMMarathon (26.2 mi)
7:30 AMHalf Marathon (13.1 mi)7:45 AM10K (6.2 mi)8:00 AM5K (3.1 mi)

Irving Frost Marathon FAQ

When is the 2026 Irving Frost Marathon?

The 2026 Irving Frost Marathon will be held on Saturday December 19, 2026.

Is the Irving Frost Marathon a Boston Marathon Qualifier?

Yes, the Irving Frost Marathon is an official Boston Marathon qualifier.

What is the time limit for the Irving Frost Marathon?

The time limit for the Irving Frost Marathon is 6.5 hours.

What will the weather be like for the 2026 Irving Frost Marathon?

The forecast calls for a high of 62°F and a low of 44°F with a 5% chance of rain.

What is the elevation gain of the Irving Frost Marathon?

The Irving Frost Marathon course has about 273 ft (83 m) of climbing and 271 ft (83 m) of descent, and finishes near the elevation it starts.

Is the Irving Frost Marathon flat?

Yes. It has about 10 ft (3 m) of climbing per mile, and no mile climbs more than 55 ft (17 m). 4:00 on a flat course is about 4:00:30 here (30 seconds slower). It is flatter than 73% of the marathon courses racecast.io has mapped, measured by what the hills cost in time.

What is the weather usually like for the Irving Frost Marathon?

Over the 6 years racecast.io has race-day weather for (2019 to 2025), it averaged 42°F at the start and 51°F by a typical finish. It has not rained during race hours in any of those years.

What was the hottest Irving Frost Marathon?

Of the 6 years on record, 2025 was the warmest, reaching 66°F during race hours. The coldest start was 2024, at 34°F.

What was the windiest Irving Frost Marathon?

Of the 6 years on record, 2021 was the windiest, with wind averaging 18 mph during race hours. The calmest was 2019, at 5 mph.

Irving Frost Marathon weather history

Based on 6 years of data
Avg Temp
46°F
L:42° H:51°
RunScore
9
Conditions
Rain Freq
0%
0 of 6 yrs
Wind12mph
Dew35°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2025
clear-night
51°/66°-
7
2024
clear-night
34°/44°-
10
2023
clear-night
42°/52°-
9
2022
clear-night
35°/44°-
9
2021
cloudy
50°/51°-
8
2019
partly-cloudy-night
40°/51°-
10