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SF MARATHON 1ST HALF 2025

Natalie Smith

Los Altos Hills, CA

Bib: 18615 F 20

0:00
0:00
/ mi
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Overall
#0 / 7100
Top 27%
Gender (Female)
#0 / 3107
Top 16%
F20-29
#0 / 410
Top 22%
Race Day Weather
56°/46°F
light rain

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
1.81M
9:37/mi
17:25
→ flat
5.34M
10:27/mi
54:18
↑ 80↓ 74
6.15M
9:31/mi
1:02:00
↑ 126
10.54M
9:00/mi
1:41:31
↑ 230↓ 361
11.05M
10:02/mi
1:46:38
↑ 172
Finish· 13.11 mi
8:20/mi
2:03:47
↑ 97↓ 114
Course Elevation
10–277 ft
≈
×22story building
•▲ 774 ft climb · ▼ 557 ft descent

The Course

Half Splits

1st Half· via 6.15M
1:02:0010:05 /mi⚖️ balanced
2nd Half
1:01:478:53 /mi⚖️ balanced
Even split — consistent pacing between halves
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Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
1.81M
17:259:371.81 mi17:25
9:37
-
5.34M
54:1810:103.53 mi36:53
10:27
+0:50
6.15M
1:02:0010:050.81 mi7:42
9:31
-0:56
10.54M
1:41:319:384.39 mi39:31
9:00
-0:31
11.05M
1:46:389:390.51 mi5:07
10:02
+1:02
Finish(13.11 mi)
2:03:479:272.06 mi17:09
8:20
-1:42
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

8:20 /mi

Average Pace

9:27 /mi

Slowest Pace

10:27 /mi

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Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

56:40

46% of race

Time at Steady Pace

25:07

20% of race

Time at Slower Pace

42:00

34% of race

Average Pace: 9:27 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

Heatmap

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0mi3.3mi6.6mi9.8mi13.1mi
Pace:
Faster
Steady
Slower

Checkpoint and Segment Rankings

CheckpointSeg. DistOverallFemalesF20-29Seg. OverallSeg. FemalesSeg. F20-29
1.81M1.81 mi30999531533099953153
5.34M3.53 mi3825-7261294-341207-5441631459233
6.15M0.81 mi3524+3011149+145182+25197248495
10.54M4.39 mi2575+949737+412129+53156634563
11.05M0.51 mi2326+249641+96112+173934615
Finish(13.11 mi)2.06 mi1934+392487+15489+235348223

Segment Performance Analysis

Start → 1.81M

0.0 - 1.8 mi

Top 44%
~flat
+4ft-3ft

Overall

3099

Females

953

F20-24

154

1.81M→5.34M

1.8 - 5.3 mi

Top 59%
×4story building
+80ft-74ft

Overall

4163

Females

1459

F20-24

234

5.34M→6.15M

5.3 - 6.2 mi

Top 28%
×10story building
+126ft-4ft

Overall

1972

Females

484

F20-24

96

6.15M→10.54M

6.2 - 10.5 mi

Top 22%
×21story building
+230ft-361ft

Overall

1566

Females

345

F20-24

64

10.54M→11.05M

10.5 - 11.1 mi

Top 6%
×14story building
+172ft-0ft

Overall

393

Females

46

F20-24

15

11.05M→Finish

11.1 - 13.1 mi

Top 8%
×7story building
+97ft-114ft

Overall

534

Females

82

F20-24

23

Passing Analysis

Category:
▲Net Change
+0
0 passed by0* passed
SegmentMovementRank
Start → 1.81M-#3099
1.81M → 5.34M
79266*-726
#3099 → #3825
5.34M → 6.15M
2303+301
#3825 → #3524
6.15M → 10.54M
1950*+949
#3524 → #2575
10.54M → 11.05M
2251+249
#2575 → #2326
11.05M → Finish
0392*+392
#2326 → #1934
TOTALS
7971962*+1165
#3099 → #1934

* Includes athletes who did not complete a segment (DNF/DNQ).

Passing Visualized

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Passing Circle

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Position Flow

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Race Lanes

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Official Timing Data

The San Francisco Marathon

The San Francisco Marathon

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Race Place Events