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SF MARATHON 1ST HALF 2023

Natasha Willis

San Francisco, CA

Bib: 15747 F 23

0:00
0:00
/ mi
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Overall
#0 / 6072
Top 19%
Gender (Female)
#0 / 2732
Top 10%
F20-29
#0 / 376
Top 15%
Race Day Weather
60°/50°F
overcast clouds

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
1.40M
8:02/mi
11:15
→ flat
2.13M
17:21/mi
23:55
→ flat
6.43M
10:22/mi
1:08:29
↑ 274↓ 78
6.62M
-29:-50/mi
1:03:00
↑ 16
10.65M
8:44/mi
1:38:13
↑ 153↓ 361
Finish· 13.11 mi
7:53/mi
1:57:37
↑ 244↓ 114
Course Elevation
10–277 ft
≈
×22story building
•▲ 774 ft climb · ▼ 557 ft descent

The Course

Half Splits

1st Half· via 6.62M
1:03:009:31 /mi+13.3%
2nd Half
54:378:25 /mi✓ faster
Negative split — 13.3% faster in the second half
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Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
1.40M
11:158:021.40 mi11:15
8:02
-
2.13M
23:5511:140.73 mi12:40
17:21
+9:19
6.43M
1:08:2910:394.30 mi44:34
10:22
-6:59
6.62M
1:03:009:310.19 mi
-29:-50
-40:12
10.65M
1:38:139:134.03 mi35:13
8:44
+38:34
Finish(13.11 mi)
1:57:378:582.46 mi19:24
7:53
-0:51
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

-30:-50 /mi

Average Pace

8:58 /mi

Slowest Pace

17:21 /mi

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Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

1:57:37

100% of race

Time at Steady Pace

0:00

0% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:58 /mi

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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
1.40M1.40 mi8982274589822745
2.13M0.73 mi1233-335342-11564-19161049793
6.43M4.30 mi1176+57299+4356+8124031756
6.62M0.19 mi1239-63333-3460-4---
10.65M4.03 mi1252-13318+1561-1131234258
Finish(13.11 mi)2.46 mi1134+118283+3555+689920241

Segment Performance Analysis

Start → 1.40M

0.0 - 1.4 mi

Top 15%
~flat
+3ft-2ft

Overall

898

Females

227

F20-24

45

1.40M→2.13M

1.4 - 2.1 mi

Top 27%
~flat
+3ft-1ft

Overall

1610

Females

497

F20-24

93

2.13M→6.43M

2.1 - 6.4 mi

Top 20%
×17story building
+274ft-78ft

Overall

1240

Females

317

F20-24

56

6.43M→6.62M

6.4 - 6.6 mi

×1story
+16ft-0ft

Overall

-

Females

-

F20-24

-

6.62M→10.65M

6.6 - 10.7 mi

Top 22%
×21story building
+153ft-361ft

Overall

1312

Females

342

F20-24

58

10.65M→Finish

10.7 - 13.1 mi

Top 15%
×17story building
+244ft-114ft

Overall

899

Females

202

F20-24

41

Passing Analysis

Category:
▼Net Change
0
0 passed by0* passed
SegmentMovementRank
Start → 1.40M-#898
1.40M → 2.13M
35015-335
#898 → #1233
2.13M → 6.43M
92149*+57
#1233 → #1176
6.43M → 6.62M
8118-63
#1176 → #1239
6.62M → 10.65M
10289*-13
#1239 → #1252
10.65M → Finish
7125*+118
#1252 → #1134
TOTALS
632396*-236
#898 → #1134

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

Passing Visualized

Category:
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Passing Circle

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Position Flow

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Race Lanes

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Public Race Data

The San Francisco Marathon

The San Francisco Marathon

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