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SF MARATHON 1ST HALF 2023

Jen-Feng Chang

SunnyvaleSunnyvale, CA

Bib: 10777 M 32

0:00
0:00
/ mi
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Overall
#0 / 6072
Gender (Male)
#0 / 3331
Division (M30-34)
#0 / 723
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
8:25/mi
11:47
→ flat
2.13M
22:00/mi
27:51
→ flat
6.43M
13:20/mi
1:25:10
↑ 274↓ 78
6.62M
-40:-27/mi
1:17:40
↑ 16
10.65M
11:58/mi
2:05:53
↑ 153↓ 361
Finish· 13.11 mi
11:48/mi
2:34:53
↑ 244↓ 114
Course Elevation
10–277 ft
≈
×22story building
•▲ 774 ft climb · ▼ 557 ft descent

The Course

Half Splits

1st Half· via 6.62M
1:17:4011:44 /mi⚖️ balanced
2nd Half
1:17:1311:54 /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
1.40M
11:478:251.40 mi11:47
8:25
-
2.13M
27:5113:040.73 mi16:04
22:00
+13:35
6.43M
1:25:1013:154.30 mi57:19
13:20
-8:40
6.62M
1:17:4011:440.19 mi
-40:-27
-53:47
10.65M
2:05:5311:494.03 mi48:13
11:58
+52:25
Finish(13.11 mi)
2:34:5311:492.46 mi29:00
11:48
-0:10
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

-41:-27 /mi

Average Pace

11:49 /mi

Slowest Pace

22:00 /mi

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Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

2:34:53

100% of race

Time at Steady Pace

0:00

0% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 11:49 /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. DistOverallMalesM30-34Seg. OverallSeg. MalesSeg. M30-34
1.40M1.40 mi1447101821814471018218
2.13M0.73 mi3418-19712156-1138483-26550092910648
6.43M4.30 mi4081-6632514-358567-8443752650592
6.62M0.19 mi4075+62508+6562+5---
10.65M4.03 mi4464-3892678-170600-3849702881652
Finish(13.11 mi)2.46 mi4556-922712-34614-1447962766631

Segment Performance Analysis

Start → 1.40M

0.0 - 1.4 mi

Top 24%
~flat
+3ft-2ft

Overall

1447

Males

1018

M30-34

220

1.40M→2.13M

1.4 - 2.1 mi

Top 82%
~flat
+3ft-1ft

Overall

5009

Males

2910

M30-34

652

2.13M→6.43M

2.1 - 6.4 mi

Top 72%
×17story building
+274ft-78ft

Overall

4375

Males

2650

M30-34

595

6.43M→6.62M

6.4 - 6.6 mi

×1story
+16ft-0ft

Overall

-

Males

-

M30-34

-

6.62M→10.65M

6.6 - 10.7 mi

Top 82%
×21story building
+153ft-361ft

Overall

4970

Males

2881

M30-34

654

10.65M→Finish

10.7 - 13.1 mi

Top 79%
×17story building
+244ft-114ft

Overall

4796

Males

2766

M30-34

631

Passing Analysis

Category:
▼Net Change
0
0 passed by0* passed
SegmentMovementRank
Start → 1.40M-#1447
1.40M → 2.13M
19721-1971
#1447 → #3418
2.13M → 6.43M
75289*-663
#3418 → #4081
6.43M → 6.62M
6672+6
#4081 → #4075
6.62M → 10.65M
42233*-389
#4075 → #4464
10.65M → Finish
13442*-92
#4464 → #4556
TOTALS
3346237*-3109
#1447 → #4556

* 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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