The Best Marathons in August
Late summer, weighted to the mountains and coast. Here is every marathon RaceScout tracks that runs in August, sequenced by date so you can see how the month fills out.
Sun, Aug 16
2026
Big Wild Life Runs Marathon
Anchorage, AK
Flat
64°F
Avg temp
~232
Field
7%
BQ %
Sat, Aug 22
2026
Reykjavik Marathon
Reykjavik
Flat
53°F
Avg temp
~1,231
Field
—
BQ %
Sun, Aug 23
2026
Santa Rosa Marathon
Santa Rosa, CA
Flat
82°F
Avg temp
~1,349
Field
16%
BQ %
Sun, Aug 30
2026
Mexico City Marathon
Mexico City
Flat
74°F
Avg temp
~30,000
Field
—
BQ %
Sun, Aug 30
2026
Sydney Marathon
Sydney
Rolling
64°F
Avg temp
~32,959
Field
—
BQ %
Aug 2027
estimated
Crater Lake Marathon
Crater Lake, OR
Rolling
91°F
Avg temp
~49
Field
—
BQ %
More months
The Best Marathons in January
Warm-weather escapes and winter-flat courses.
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The Best Marathons in February
Late-winter racing before the spring rush.
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The Best Marathons in March
The spring season opens, cool and fast.
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The Best Marathons in April
Peak spring, from Boston week onward.
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The Best Marathons in May
The last cool weekends before summer heat.
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The Best Marathons in June
Early-summer races, mostly cool-climate and high-altitude.
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The Best Marathons in July
Summer racing, run where the mornings stay cold.
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The Best Marathons in September
Fall PR season begins as the air turns.
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The Best Marathons in October
The deepest month on the calendar for a fast time.
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The Best Marathons in November
Cool, flat, and stacked with big-city fields.
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The Best Marathons in December
Year-end racing, from downhill speed to holiday flats.
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