James Tsao

Bib: 22865MAge: 35

Mountain View, CA

0:00
0:00
/ mi
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Overall
#0 / 3840
Top 18%
Gender (Male)
#0 / 2065
Top 25%
Division (M35-39)
#0 / 309
Top 28%
Race Day Weather
59°/49°F
scattered clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
2M
17:11
Rank: #861
Start2M
8:35/mi
17:11 split
4M
33:22
Rank: #866 (-5)
2M4M
8:06/mi
16:11 split
6M
54:09
Rank: #831 (+35)
4M6M
10:23/mi
20:47 split
8M
1:06:36
Rank: #767 (+64)
6M8M
6:13/mi
12:27 split
10M
1:23:45
Rank: #745 (+22)
8M10M
8:35/mi
17:09 split
12M
1:41:24
Rank: #725 (+20)
10M12M
8:49/mi
17:39 split
Finish· 13.11 mi
1:50:33
Rank: #687 (+38)
12MFinish
8:15/mi
9:09 split

The Course

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Half Splits

1st Half· via 6MFaster
Distance6.00 mi
Time54:09
Pace9:02 /mi
2nd Half
Distance7.11 mi
Time56:24
Pace7:56 /mi
📊Positive Split: 4.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
2M
2.00 mi08:51:2517:118:3517:11
8:35
-
4M
4.00 mi09:07:3633:228:2116:11
8:06
-0:29
6M
6.00 mi09:28:2354:099:0220:47
10:23
+2:17
8M
8.00 mi09:40:501:06:368:1912:27
6:13
-4:10
10M
10.00 mi09:57:591:23:458:2317:09
8:35
+2:22
12M
12.00 mi10:15:381:41:248:2717:39
8:49
+0:14
Finish
13.11 mi10:24:471:50:338:269:09
8:15
-0:34

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

6:13 /mi

Average Pace

8:26 /mi

Slowest Pace

10:23 /mi

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Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

12:27

11% of race

Time at Steady Pace

1:17:19

70% of race

Time at Slower Pace

20:47

19% of race

Average Pace: 8:26 /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 mi08:51:2517:118:3517:11
8:35
#861
4M
4.00 mi09:07:3633:228:2116:11
8:06
#866
6M
6.00 mi09:28:2354:099:0220:47
10:23
#831
8M
8.00 mi09:40:501:06:368:1912:27
6:13
#767
10M
10.00 mi09:57:591:23:458:2317:09
8:35
#745
12M
12.00 mi10:15:381:41:248:2717:39
8:49
#725
Finish
13.11 mi10:24:471:50:338:269:09
8:15
#687
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM35-39Seg. OverallSeg. MalesSeg. M35-39
2M2.00 mi2.00 mi861644111639(Top 17%)483(Top 23%)83(Top 27%)
4M4.00 mi2.00 mi866-5640+4111872(Top 23%)637(Top 31%)110(Top 36%)
6M6.00 mi2.00 mi831+35618+22107+4799(Top 21%)607(Top 29%)100(Top 32%)
8M8.00 mi2.00 mi767+64582+3698+9605(Top 16%)465(Top 23%)78(Top 25%)
10M10.00 mi2.00 mi745+22566+1692+6688(Top 18%)530(Top 26%)89(Top 29%)
12M12.00 mi2.00 mi725+20551+1590+2639(Top 17%)483(Top 23%)83(Top 27%)
Finish13.11 mi1.11 mi687+38524+2788+2540(Top 14%)411(Top 20%)73(Top 24%)

Segment Performance Analysis

10M→12M

0.0 - 2.0 mi

Top 17%
×9stories
+138ft-68ft

Overall

639

Males

483

M35-39

83

2M→4M

2.0 - 4.0 mi

Top 23%
×13stories
+163ft-19ft

Overall

872

Males

637

M35-39

110

4M→6M

4.0 - 6.0 mi

Top 21%
×4stories
+55ft-83ft

Overall

799

Males

607

M35-39

100

6M→8M

6.0 - 8.0 mi

Top 16%
×10stories
+65ft-151ft

Overall

605

Males

465

M35-39

78

8M→10M

8.0 - 10.0 mi

Top 18%
×10stories
+61ft-174ft

Overall

688

Males

530

M35-39

89

10M→12M

10.0 - 12.0 mi

Top 17%
×3stories
+41ft-53ft

Overall

639

Males

483

M35-39

83

12M→Finish

12.0 - 13.1 mi

Top 14%
×1human
+6ft-6ft

Overall

540

Males

411

M35-39

73

Passing Analysis

Category:
Athletes Passed
270*
Passed By
96
Net Change
+174
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 2M----#861
2M4M4752-5#861#866
4M6M4813+35#866#831
6M8M662+64#831#767
8M10M35*13+22#767#745
10M12M3515+20#745#725
12MFinish391+38#725#687
TOTALS270*96+174

* 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