Connemara International Marathon

Galway, Ireland · April 25, 2027·
partly-cloudy-day51°·54° high·Breezy·Dry
9
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Connemara International Marathon race day weather

partly-cloudy-day
51°at start
54° high
Breezy
Dry
Your goal
0:00:00

Cool temps, challenging winds ahead

Runners will face temperatures starting at 51°F and rising to 54°F, with an average humidity of 66%. A headwind will impact early miles (1-10), requiring conservative pacing, while tailwinds from mile 14 onward will provide relief. With gusts reaching 24 mph, runners should prepare for shifting conditions, particularly during the climbs at miles 14 and 23.

Race day forecast available in 153 days
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Pace Calculator

26.2mi
0:00:00
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Connemara International Marathon route and elevation

The Connemara International Marathon course has about 1,441 ft (439 m) of climbing and 1,413 ft (431 m) of descent, a net rise of about 28 ft (9 m). It is hillier than 92% of the marathon courses racecast.io has mapped, measured by what the hills cost in time. The hardest mile is mile 14, with 202 ft (62 m) of climbing and a 3.6% average grade.

Biggest climbs

  • Miles 6.4 to 6.9: climbs about 120 ft (37 m).
  • Miles 13.1 to 14.8: climbs about 240 ft (73 m).
  • Miles 22.4 to 23.9: climbs about 300 ft (91 m).

What the hills cost

  • 3:30 on a flat course is about 3:34 here (4 minutes slower).
  • 4:00 on a flat course is about 4:05 here (5 minutes slower).
  • 4:30 on a flat course is about 4:35 here (5 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 Connemara International Marathon mile splits at even effort for three finish times, with each mile's climb and descent
MileClimbDescent3:304:004:30
141 ft70 ft7:448:519:57
258 ft41 ft8:009:0810:17
337 ft45 ft7:508:5710:05
466 ft34 ft8:089:1810:26
553 ft32 ft8:029:1110:20
68 ft46 ft7:438:499:55
7127 ft17 ft8:4710:0311:19
822 ft60 ft7:448:499:55
968 ft14 ft8:189:3010:41
1044 ft95 ft7:408:469:52
1138 ft121 ft7:348:389:43
1283 ft65 ft8:019:0910:18
1379 ft158 ft7:348:409:44
14202 ft14 ft9:3110:5212:14
1561 ft50 ft7:579:0510:14
162 ft110 ft7:298:339:37
1721 ft65 ft7:418:489:53
1833 ft44 ft7:508:5610:04
1973 ft78 ft7:508:5810:05
2033 ft21 ft7:589:0610:14
2139 ft73 ft7:448:509:57
2228 ft44 ft7:488:5510:01
23130 ft11 ft8:5310:0911:25
24178 ft4 ft9:2310:4312:04
250 ft170 ft7:188:219:23
2611 ft32 ft7:478:5410:01
Last 0.26 ft0 ft1:462:012:16

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

Race Plan

Get your personalized Connemara International 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 Connemara International Marathon

The full marathon starts at Lough Inagh, takes in the half marathon course and finishes in Maam Cross. Expect a stunning start by the lake and a tough second half to your race. Source

Race weekend

Sunday, April 25
9:00 AMUltra (39.3 mi)
11:00 AMMarathon (26.2 mi)
11:00 AMHalf Marathon (13.1 mi)

Connemara International Marathon FAQ

When is the 2027 Connemara International Marathon?

The 2027 Connemara International Marathon will be held on Sunday April 25, 2027.

What is the time limit for the Connemara International Marathon?

The time limit for the Connemara International Marathon is 6.5 hours.

What will the weather be like for the 2027 Connemara International Marathon?

The forecast calls for a high of 55°F and a low of 43°F with a 11% chance of rain. Check our detailed hourly forecast above for the best marathon race plan.

What is the elevation gain of the Connemara International Marathon?

The Connemara International Marathon course has about 1,441 ft (439 m) of climbing and 1,413 ft (431 m) of descent, a net rise of about 28 ft (9 m).

Is the Connemara International Marathon hilly?

Yes. It has about 55 ft (17 m) of climbing per mile. The hardest mile is mile 14, with 202 ft (62 m) of climbing and a 3.6% average grade. 4:00 on a flat course is about 4:05 here (5 minutes slower). It is hillier than 92% of the marathon courses racecast.io has mapped, measured by what the hills cost in time.

What is the weather usually like for the Connemara International Marathon?

Over the 5 years racecast.io has race-day weather for (2022 to 2026), it averaged 53°F at the start and 56°F by a typical finish. Rain fell during race hours in 2 of those years (2023 and 2025).

What was the hottest Connemara International Marathon?

Of the 5 years on record, 2022 was the warmest, reaching 60°F during race hours. The coldest start was 2026, at 48°F.

What was the windiest Connemara International Marathon?

Of the 5 years on record, 2025 was the windiest, with wind averaging 22 mph during race hours. The calmest was 2026, at 3 mph.

Connemara International Marathon weather history

Based on 5 years of data
Avg Temp
55°F
L:53° H:56°
RunScore
8
Conditions
Rain Freq
40%
2 of 5 yrs
Wind11mph
Dew44°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2026
partly-cloudy-day
48°/52°-
10
2025
cloudy
54°/58°Light
7
2024
clear-day
56°/58°-
8
2023
partly-cloudy-day
53°/55°Light
9
2022
clear-day
55°/60°-
7