LM
Lake Merced Half Marathon
Race Date
Sep 21, 2025
Location
San Francisco, CA
Solid Pick59
Course Info
Course Type
Loop Course
Terrain
road
Difficulty
Rolling Hills
Elevation Gain
0'
Net Drop/km
0 m (Flat)
Separation
0.0%
Also Offers
4.5M run
Quality Score
Solid Pick59Heritage20/20
16 years running
Size9/15
~60 finishers a year
Momentum0/5
shrinking
Loyalty20/20
28% returning runners
Course & details0/15
limited extras
National draw0/10
runners from 1 state
Front-pack speed5/5
winner 1:12:30
Weather5/10
typical high 69°F
Race Day Weather
5-year historical avgStart (Low)
58°
Afternoon (High)
69°
Pleasant conditions — light layers at start, comfortable by finish
0.0"
Precipitation
15 mph
Wind
81%
Humidity
Historical Finish Times
How 1,924 finishers actually crossed the line across 16 years.
Most recent
2025
Total finishers
1,924
Median time
1:43:20
Latest turnout
54
States
12
10%
25%
75%
90%
0:00p50 median ≈ 1:503:40
Turnout by year
2014–2025
'14'15'16'21'22'23'24'25
See full results
Hover the histogram to inspect specific finish times.
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