Justin Shih

Castro Valley, CA

Bib: 12260 M 34

0:00
0:00
/ mi
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Overall
#0 / 5177
Gender (Male)
#0 / 2862
Division (M30-34)
#0 / 642
Race Day Weather
56°/46°F
overcast clouds

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
2.13M
13:56/mi
29:41
→ flat
6.62M
11:18/mi
1:20:27
29978
7.12M
13:38/mi
1:27:16
27
10.65M
11:11/mi
2:06:45
127360
Finish· 13.11 mi
9:49/mi
2:30:54
244114
Course Elevation
10277 ft
×22story building
774 ft climb · 557 ft descent

The Course

Half Splits

1st Half· via 6.62M
1:20:2712:09 /mi+12.4%
2nd Half
1:10:2710:51 /mi✓ faster
Negative split — 12.4% 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
2.13M
29:4113:562.13 mi29:41
13:56
-
6.62M
1:20:2712:094.49 mi50:46
11:18
-2:38
7.12M
1:27:1612:150.50 mi6:49
13:38
+2:20
10.65M
2:06:4511:543.53 mi39:29
11:11
-2:27
Finish(13.11 mi)
2:30:5411:312.46 mi24:09
9:49
-1:22
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

9:49 /mi

Average Pace

11:31 /mi

Slowest Pace

13:56 /mi

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Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

24:09

16% of race

Time at Steady Pace

1:30:15

60% of race

Time at Slower Pace

36:30

24% of race

Average Pace: 11:31 /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
2.13M2.13 mi4100243955241002439552
6.62M4.49 mi4117-172442-3553-141172436551
7.12M0.50 mi3952+1652374+68537+1625431700410
10.65M3.53 mi4008-562385-11539-240962396535
Finish(13.11 mi)2.46 mi3781+2272276+109509+3027501724402

Segment Performance Analysis

Start → 2.13M

0.0 - 2.1 mi

Top 79%
~flat
+6ft-3ft

Overall

4100

Males

2439

M30-34

553

2.13M→6.62M

2.1 - 6.6 mi

Top 80%
×19story building
+299ft-78ft

Overall

4117

Males

2436

M30-34

552

6.62M→7.12M

6.6 - 7.1 mi

Top 49%
×2story building
+27ft-0ft

Overall

2543

Males

1700

M30-34

410

7.12M→10.65M

7.1 - 10.7 mi

Top 79%
×21story building
+127ft-360ft

Overall

4096

Males

2396

M30-34

536

10.65M→Finish

10.7 - 13.1 mi

Top 53%
×17story building
+244ft-114ft

Overall

2750

Males

1724

M30-34

402

Passing Analysis

Category:
Net Change
+0
0 passed by0* passed
SegmentMovementRank
Start → 2.13M-#4100
2.13M6.62M
186169*-17
#4100 #4117
6.62M7.12M
2167*+165
#4117 #3952
7.12M10.65M
11256*-56
#3952 #4008
10.65MFinish
4231*+227
#4008 #3781
TOTALS
304623*+319
#4100 #3781

* 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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