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SF MARATHON 1ST HALF 2023

Witold Boinski

Thalwil

Bib: 13387 M 43

0:00
0:00
/ mi
Masters
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Overall
#0 / 6072
Top 26%
Gender (Male)
#0 / 3331
Top 34%
Masters (Masters Men)
#0 / 1028
Top 24%
Division (M40-44)
#0 / 332
Top 29%
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
8:42/mi
12:11
→ flat
2.13M
17:11/mi
24:44
→ flat
6.43M
10:47/mi
1:11:05
↑ 274↓ 78
6.62M
-33:-57/mi
1:04:49
↑ 16
10.65M
9:21/mi
1:42:30
↑ 153↓ 361
Finish· 13.11 mi
8:08/mi
2:02:30
↑ 244↓ 114
Course Elevation
10–277 ft
≈
×22story building
•▲ 774 ft climb · ▼ 557 ft descent

The Course

Half Splits

1st Half· via 6.62M
1:04:499:47 /mi+11.0%
2nd Half
57:418:53 /mi✓ faster
Negative split — 11.0% 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
12:118:421.40 mi12:11
8:42
-
2.13M
24:4411:370.73 mi12:33
17:11
+8:29
6.43M
1:11:0511:034.30 mi46:21
10:47
-6:24
6.62M
1:04:499:470.19 mi
-33:-57
-44:44
10.65M
1:42:309:374.03 mi37:41
9:21
+43:18
Finish(13.11 mi)
2:02:309:212.46 mi20:00
8:08
-1:13
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

-34:-57 /mi

Average Pace

9:21 /mi

Slowest Pace

17:11 /mi

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Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

2:02:30

100% of race

Time at Steady Pace

0:00

0% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 9:21 /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. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
1.40M1.40 mi1872128612218721286122
2.13M0.73 mi1606+2661120+166108+141512106194
6.43M4.30 mi1615-91154-34100+816901196105
6.62M0.19 mi1569+461113+4199+1---
10.65M4.03 mi1721-1521219-106109-1021001433129
Finish(13.11 mi)2.46 mi1562+1591124+9597+12115485482

Segment Performance Analysis

Start → 1.40M

0.0 - 1.4 mi

Top 31%
~flat
+3ft-2ft

Overall

1872

Males

1286

M40-44

122

1.40M→2.13M

1.4 - 2.1 mi

Top 25%
~flat
+3ft-1ft

Overall

1512

Males

1061

M40-44

96

2.13M→6.43M

2.1 - 6.4 mi

Top 28%
×17story building
+274ft-78ft

Overall

1690

Males

1196

M40-44

105

6.43M→6.62M

6.4 - 6.6 mi

×1story
+16ft-0ft

Overall

-

Males

-

M40-44

-

6.62M→10.65M

6.6 - 10.7 mi

Top 35%
×21story building
+153ft-361ft

Overall

2100

Males

1433

M40-44

129

10.65M→Finish

10.7 - 13.1 mi

Top 19%
×17story building
+244ft-114ft

Overall

1154

Males

854

M40-44

82

Passing Analysis

Category:
▲Net Change
+0
0 passed by0* passed
SegmentMovementRank
Start → 1.40M-#1872
1.40M → 2.13M
47313+266
#1872 → #1606
2.13M → 6.43M
171162*-9
#1606 → #1615
6.43M → 6.62M
2874+46
#1615 → #1569
6.62M → 10.65M
19644*-152
#1569 → #1721
10.65M → Finish
18177*+159
#1721 → #1562
TOTALS
460770*+310
#1872 → #1562

* 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

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