Ann Arbor Marathon

Ann Arbor, MI, USA · October 03, 2027·
partly-cloudy-day54°·65° high·Breezy·Dry
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Ann Arbor Marathon race day weather

partly-cloudy-day
54°at start
69° high
Breezy
Dry
Your goal
0:00:00

Cool start, warming trend ahead

Runners will face a start-line temperature of 54°F, rising to 65°F by the finish. With an average humidity of 70% and a light southwest wind at 10 mph, conditions will feel warmer as the race progresses. Runners should consider adjusting their pace for the late laps and stay hydrated, especially if humidity begins to impact comfort.

Race day forecast available in 312 days
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Pace Calculator

26.2mi
0:00:00
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Ann Arbor Marathon route and elevation

The Ann Arbor Marathon course has about 540 ft (165 m) of climbing and 540 ft (165 m) of descent, and finishes near the elevation it starts. It is hillier than 84% of the marathon courses racecast.io has mapped, measured by what the hills cost in time. The hardest mile is mile 22, with 91 ft (28 m) of climbing and a 1.6% average grade.

Biggest climbs

  • Miles 1.1 to 4.5: climbs about 130 ft (39 m).
  • Miles 10.3 to 12.7: climbs about 80 ft (24 m).
  • Miles 21.2 to 22.8: climbs about 145 ft (44 m).

What the hills cost

  • 3:30 on a flat course is about 3:32 here (2 minutes slower).
  • 4:00 on a flat course is about 4:03 here (3 minutes slower).
  • 4:30 on a flat course is about 4:33 here (3 minutes 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 Ann Arbor Marathon mile splits at even effort for three finish times, with each mile's climb and descent
MileClimbDescent3:304:004:30
111 ft26 ft7:539:0110:08
261 ft2 ft8:279:3910:52
315 ft7 ft8:019:0910:18
440 ft26 ft8:049:1410:23
540 ft72 ft7:508:5710:04
638 ft44 ft7:559:0310:11
71 ft112 ft7:338:389:43
83 ft4 ft7:579:0510:13
93 ft3 ft7:579:0510:13
104 ft3 ft7:589:0610:14
1151 ft2 ft8:229:3310:45
1223 ft11 ft8:029:1210:21
1321 ft34 ft7:549:0210:09
144 ft51 ft7:468:529:59
157 ft6 ft7:589:0610:14
165 ft3 ft7:589:0610:15
175 ft2 ft7:589:0710:15
1812 ft6 ft8:009:0810:17
1922 ft17 ft7:599:0810:16
2041 ft5 ft8:159:2610:36
210 ft37 ft7:488:5510:03
2291 ft6 ft8:419:5511:08
2356 ft9 ft8:219:3210:45
2414 ft36 ft7:518:5910:06
251 ft49 ft7:468:539:59
2626 ft21 ft8:009:0810:17
Last 0.21 ft2 ft1:462:012:16

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

Race Plan

Get your personalized Ann Arbor 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 Ann Arbor Marathon

The Ann Arbor Marathon starts near downtown Ann Arbor, Michigan and runs through the University of Michigan campus. The marathon and half marathon course also follows the Huron River, Gallup Park and Nichols Arboretum before returning to a finish in downtown Ann Arbor. The USATF-certified marathon course is a Boston Marathon and New York City Marathon qualifying course. The race offers a marathon relay, half marathon, 10K and 5K alongside the marathon. Source

Race weekend

Sunday, October 3
8:00 AMMarathon (26.2 mi)
8:00 AMHalf Marathon (13.1 mi)
8:00 AMMarathon Relay (26.2 mi)
9:00 AM10K (6.2 mi)9:15 AM5K (3.1 mi)

Ann Arbor Marathon FAQ

When is the 2027 Ann Arbor Marathon?

The 2027 Ann Arbor Marathon will be held on Sunday October 3, 2027.

Is the Ann Arbor Marathon a Boston Marathon Qualifier?

Yes, the Ann Arbor Marathon is an official Boston Marathon qualifier.

What is the time limit for the Ann Arbor Marathon?

The time limit for the Ann Arbor Marathon is 6 hours.

What will the weather be like for the 2027 Ann Arbor Marathon?

The forecast calls for a high of 69°F and a low of 52°F with a 9% chance of rain.

What is the elevation gain of the Ann Arbor Marathon?

The Ann Arbor Marathon course has about 540 ft (165 m) of climbing and 540 ft (165 m) of descent, and finishes near the elevation it starts. It is hillier than 84% of the marathon courses racecast.io has mapped, measured by what the hills cost in time.

Is the Ann Arbor Marathon hilly?

Moderately. It has about 21 ft (6 m) of climbing per mile. The hardest mile is mile 22, with 91 ft (28 m) of climbing and a 1.6% average grade. 4:00 on a flat course is about 4:03 here (3 minutes slower).

What is the weather usually like for the Ann Arbor Marathon?

Over the 14 years racecast.io has race-day weather for (2012 to 2026), it averaged 44°F at the start and 55°F by a typical finish. Rain fell during race hours in 3 of those years (2017, 2024 and 2026).

What was the hottest Ann Arbor Marathon?

Of the 14 years on record, 2012 was the warmest, reaching 79°F during race hours. The coldest start was 2015, at 14°F.

What was the windiest Ann Arbor Marathon?

Of the 14 years on record, 2022 was the windiest, with wind averaging 13 mph during race hours. The calmest was 2021, at 1 mph.

Ann Arbor Marathon weather history

Based on 14 years of data
Avg Temp
49°F
L:44° H:55°
RunScore
8
Conditions
Rain Freq
21%
3 of 14 yrs
Wind7mph
Dew42°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2026
partly-cloudy-day
49°/66°Light
8
2025
cloudy
48°/62°-
8
2024
rain
50°/52°Light
9
2023
clear-day
51°/71°-
6
2022
cloudy
56°/61°-
8
2021
clear-day
31°/48°-
10
2019
clear-day
31°/45°-
10
2018
cloudy
58°/61°-
7
2017
cloudy
40°/43°Light
9
2016
partly-cloudy-day
23°/29°-
10
2015
clear-day
14°/38°-
10
2014
clear-day
27°/41°-
10
2013
cloudy
63°/71°-
5
2012
partly-cloudy-day
72°/79°-
4