Race day on this page is Oct 18, 2026.
MarathonForecasts live
Mount Desert Island Marathon
Sunday, October 18, 2026Bar Harbor, Maine, USA
Goal time
3:15:00
Adjusted time (preview)
3:22:30–3:26:15
+7:30 to +11:15 slower
Challenging conditions. Main factor: elevation. Get your personalised finish time and split-by-split pacing plan with Race Pass.
Based on the forecast, 13 days out.
About 531 m of climbing and 533 m of descent. Hilly.
48% within 2%7% over 6%23 climbs
Impacts
Based on the forecast, 13 days out.
Elevation
High impact
>3%
Heat
Moderate impact
1–3%
Wind
Moderate impact
1–3%
Total Impact
High impact
>3%
Pace Opportunity
Challenging
ChallengingModerateFavorable
Race Pass: personalised finish time, adjusted splits, and your race-day pacing plan.
Race Day Forecast
The live outlook for this start.
15°C
Feels like 14°C
Race start: 14°C → 16°C
Forecast: overcast, with moderate winds
Race Day Pacing
Personalized pacing with weather-adjusted strategy tailored to your fitness level.
Race Pass turns this into your personalised split plan, paced for this course and forecast
Live forecast, route, and elevation
Cloud Cover
87%
Wind
13.0km/h
Humidity
91%
WBGT
13.4°C
Race Day Pacing
Personalized pacing with weather-adjusted strategy tailored to your fitness level.
Race Pass turns this into your personalised split plan, paced for this course and forecast
Live forecast, route, and elevation
Race Timeline
Race starts 08:00
07:00
Starts 08:00
14°C
Feels 14°C
0.0 mm
16%
8.4 km/h
gust 11.4
08:00
Starts 08:00
14°C
Feels 14°C
0.0 mm
14%
9.4 km/h
gust 12.4
09:00
13.0 km
14°C
Feels 13°C
0.0 mm
13%
13.2 km/h
gust 16.2
10:00
26.0 km
15°C
Feels 15°C
0.0 mm
14%
13.0 km/h
gust 16.0
11:00
38.9 km
16°C
Feels 16°C
0.0 mm
14%
15.1 km/h
gust 18.1
12:00
Finished
16°C
Feels 17°C
0.0 mm
14%
16.1 km/h
gust 19.1
Conditions over time
18 Oct 2026 · Hover or drag to explore
91% humidityDew 13.5°CWBGT 13.4°C0.0 mm (14%)
15°CFeels 14°C
08:00-11:15
TempDewWBGTRain
13.0 km/h
gust 15.5 km/h
WindGust
Related races
Same city, region or country, when we can resolve them. World majors also point to each other.
- Beach to Beacon 10K
- Anchorage Mayor's Marathon
- Asheville Marathon
- Athens Ohio Marathon
- Austin Marathon
- Back Your Badge Marathon
- Bayshore Marathon
- Beantown Marathon
View race map for this area.
Make sense of the conditions
- Dew point, WBGT and running in the heat
Read the heat and humidity before deciding what pace makes sense.
- When drafting helps your running pace
A group can help, but its pace and the conditions still need to suit you.
- Pacing the climbs and descents
Use the course profile to think about effort, not just splits.
Pacing and conditions FAQ
Beyond conditions
Conditions are only part of the race-day loss
Pacing mistakes often add several minutes, sometimes more than conditions alone, especially when the course and conditions are not ideal.
What your plan includes
Everything you need to turn this race preview into a usable race-day plan.
Personalized pacing
Effort and pace guidance tuned to this course profile.
Weather-adjusted splits
Split targets that account for heat, wind, and elevation.
Heat adaptation & drafting
Adjust for your heat tolerance and drafting preferences.
Get your personalised race plan for Mount Desert Island Marathon.
Pacing, splits, and race-day strategy personalised to your fitness and this course.
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