Ji Shern Tan

Bib: 22708MAge: 30

Fremont, CA

0:00
0:00
/ mi
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Overall
#0 / 3840
Top 12%
Gender (Male)
#0 / 2065
Top 18%
Division (M30-34)
#0 / 453
Top 19%
Race Day Weather
59°/49°F
scattered clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
2M
16:15
Rank: #542
Start2M
16:15 | 8:07/mi
4M
31:12
Rank: #500 (+42)
2M4M
14:57 | 7:29/mi
6M
50:33
Rank: #467 (+33)
4M6M
19:21 | 9:40/mi
8M
1:02:44
Rank: #472 (-5)
6M8M
12:11 | 6:05/mi
10M
1:19:22
Rank: #473 (-1)
8M10M
16:38 | 8:19/mi
12M
1:36:00
Rank: #459 (+14)
10M12M
16:38 | 8:19/mi
Finish· 13.11 mi
1:45:21
Rank: #466 (-7)
12MFinish
9:21 | 8:26/mi

The Course

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Half Splits

1st Half· via 6MFaster
Distance6.00 mi
Time50:33
Pace8:26 /mi
2nd Half
Distance7.11 mi
Time54:48
Pace7:43 /mi
📊Positive Split: 8.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
2M
2.00 mi08:48:1816:158:0716:15
8:07
-
4M
4.00 mi09:03:1531:127:4814:57
7:29
-0:38
6M
6.00 mi09:22:3650:338:2619:21
9:40
+2:11
8M
8.00 mi09:34:471:02:447:5012:11
6:05
-3:35
10M
10.00 mi09:51:251:19:227:5616:38
8:19
+2:14
12M
12.00 mi10:08:031:36:008:0016:38
8:19
0:00
Finish
13.11 mi10:17:241:45:218:029:21
8:26
+0:07

Checkpoints & Pacing

📈Pace Line

Pace Progression

Track your pace changes throughout the race. Dot colors mark your quickest to easiest segments, relative to your own pace.

Fastest Pace

6:05 /mi

Average Pace

8:02 /mi

Slowest Pace

9:40 /mi

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Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

27:08

26% of race

Time at Steady Pace

58:52

56% of race

Time at Slower Pace

19:21

18% of race

Average Pace: 8:02 /mi

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Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

🎨Heatmap

Pace Heatmap

Where you sped up and eased off relative to your own pace across the race. Colors are relative to your own range, not to other runners.

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

Click or hover over segments to see details

Sparklines

Checkpoint Splits with Pace Trends

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
2M
2.00 mi08:48:1816:158:0716:15
8:07
#542
4M
4.00 mi09:03:1531:127:4814:57
7:29
#500
6M
6.00 mi09:22:3650:338:2619:21
9:40
#467
8M
8.00 mi09:34:471:02:447:5012:11
6:05
#472
10M
10.00 mi09:51:251:19:227:5616:38
8:19
#473
12M
12.00 mi10:08:031:36:008:0016:38
8:19
#459
Finish
13.11 mi10:17:241:45:218:029:21
8:26
#466
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM30-34Seg. OverallSeg. MalesSeg. M30-34
2M2.00 mi2.00 mi542424100414(Top 11%)322(Top 16%)75(Top 17%)
4M4.00 mi2.00 mi500+42392+3293+7470(Top 12%)372(Top 18%)85(Top 19%)
6M6.00 mi2.00 mi467+33367+2586+7455(Top 12%)364(Top 18%)81(Top 18%)
8M8.00 mi2.00 mi472-5372-588-2511(Top 13%)399(Top 19%)92(Top 20%)
10M10.00 mi2.00 mi473-1375-391-3524(Top 14%)408(Top 20%)97(Top 21%)
12M12.00 mi2.00 mi459+14364+1185+6414(Top 11%)322(Top 16%)75(Top 17%)
Finish13.11 mi1.11 mi466-736486-1625(Top 16%)474(Top 23%)108(Top 24%)

Segment Performance Analysis

10M→12M

0.0 - 2.0 mi

Top 11%
×9stories
+138ft-68ft

Overall

414

Males

322

M30-34

75

2M→4M

2.0 - 4.0 mi

Top 12%
×13stories
+163ft-19ft

Overall

470

Males

372

M30-34

85

4M→6M

4.0 - 6.0 mi

Top 12%
×4stories
+55ft-83ft

Overall

455

Males

364

M30-34

81

6M→8M

6.0 - 8.0 mi

Top 13%
×10stories
+65ft-151ft

Overall

511

Males

399

M30-34

92

8M→10M

8.0 - 10.0 mi

Top 14%
×10stories
+61ft-174ft

Overall

524

Males

408

M30-34

97

10M→12M

10.0 - 12.0 mi

Top 11%
×3stories
+41ft-53ft

Overall

414

Males

322

M30-34

75

12M→Finish

12.0 - 13.1 mi

Top 16%
×1human
+6ft-6ft

Overall

625

Males

474

M30-34

108

Passing Analysis

Category:
Athletes Passed
148*
Passed By
72
Net Change
+76
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 2M----#542
2M4M5715+42#542#500
4M6M407+33#500#467
6M8M712-5#467#472
8M10M15*16-1#472#473
10M12M228+14#473#459
12MFinish714-7#459#466
TOTALS148*72+76

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

📊

Passing Visuals

Category:
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🔥Passing Intensity

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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