David Zhong

Bib: 11211•M•Age: 23

Novi, MI

0:00

0:00

/ mi

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Overall

#0 / 7100

Top 23%

Gender (Male)

#0 / 3977

Top 32%

M20-29

#0 / 437

Top 44%

Race Day Weather

56°/46°F

light rain

⏱️ Race Timeline

Course Elevation

10–277 ft

≈

×22story building

•▲ 774 ft climb · ▼ 557 ft descent

Ribbon color based on

FasterSteadySlower· vs. your average pace

Start

0:00

Race begins

1.81M

8:07/mi

14:41

→ flat

5.34M

8:51/mi

45:54

↑ 80 ft↓ 74 ft

6.15M

9:42/mi

53:45

↑ 126 ft2.8% grade

10.54M

9:20/mi

1:34:42

↑ 230 ft↓ 361 ft0.6% grade

11.05M

12:37/mi

1:41:08

↑ 172 ft6.4% grade

Finish· 13.11 mi

9:40/mi

2:01:02

↑ 97 ft↓ 114 ft0.2% grade

The Course

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Half Splits

1st Half· via 6.15MFaster

Distance6.15 mi

Time53:45

Pace8:44 /mi

2nd Half

Distance6.96 mi

Time1:07:17

Pace9:40 /mi

📊Positive Split: 25.2% slower second half

Checkpoint Splits

Checkpoint	Distance	Time of Day	Time	Avg Pace	Segment Time	Segment Pace	Diff
1.81M	1.81 mi	07:02:25	14:41	8:07	14:41	8:07	-
5.34M	5.34 mi	07:33:38	45:54	8:36	31:13	8:51	+0:44
6.15M	6.15 mi	07:41:29	53:45	8:44	7:51	9:42	+0:51
10.54M	10.54 mi	08:22:26	1:34:42	8:59	40:57	9:20	-0:22
11.05M	11.05 mi	08:28:52	1:41:08	9:09	6:26	12:37	+3:17
Finish	13.11 mi	08:48:46	2:01:02	9:14	19:54	9:40	-2:57

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

8:07 /mi

Average Pace

9:14 /mi

Slowest Pace

12:37 /mi

Loading chart...

Fastest

Middle

Slowest

Average

📊Segments

Segment Time Comparison

Time at Faster Pace

45:54

38% of race

Time at Steady Pace

1:08:42

57% of race

Time at Slower Pace

6:26

5% of race

Average Pace: 9:14 /mi

Loading chart...

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.

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

Checkpoint	Distance	Time of Day	Time	Avg Pace	Segment	Pace	Rank
1.81M	1.81 mi	07:02:25	14:41	8:07	14:41	8:07	#756
5.34M	5.34 mi	07:33:38	45:54	8:36	31:13	8:51	#1197
6.15M	6.15 mi	07:41:29	53:45	8:44	7:51	9:42	#1303
10.54M	10.54 mi	08:22:26	1:34:42	8:59	40:57	9:20	#1599
11.05M	11.05 mi	08:28:52	1:41:08	9:09	6:26	12:37	#1619
Finish	13.11 mi	08:48:46	2:01:02	9:14	19:54	9:40	#1669

Faster pace

Steady pace

Slower pace

Checkpoint and Segment Rankings

Checkpoint	Distance	Seg. Dist	Overall	Males	M20-29	Seg. Overall	Seg. Males	Seg. M20-29
1.81M	1.81 mi	1.81 mi	756	621	87	756(Top 11%)	621(Top 16%)	87(Top 20%)
5.34M	5.34 mi	3.53 mi	1197-441	954-333	141-54	1571(Top 22%)	1220(Top 31%)	178(Top 41%)
6.15M	6.15 mi	0.81 mi	1303-106	1032-78	152-11	2261(Top 32%)	1647(Top 41%)	254(Top 58%)
10.54M	10.54 mi	4.39 mi	1599-296	1238-206	188-36	1975(Top 28%)	1482(Top 37%)	216(Top 49%)
11.05M	11.05 mi	0.51 mi	1619-20	1251-13	191-3	2132(Top 30%)	1539(Top 39%)	231(Top 53%)
Finish	13.11 mi	2.06 mi	1669-50	1276-25	194-3	2026(Top 29%)	1472(Top 37%)	220(Top 50%)

Passing Analysis

Category:

Athletes Passed

106*

Passed By

1019

Net Change

-913

Segment	Athletes Passed	Passed By	Net Change	Start Rank	End Rank
Start → 1.81M	-	-	-	-	#756
1.81M → 5.34M	11	452	-441	#756	#1197
5.34M → 6.15M	12	118	-106	#1197	#1303
6.15M → 10.54M	23	319	-296	#1303	#1599
10.54M → 11.05M	20	40	-20	#1599	#1619
11.05M → Finish	40*	90	-50	#1619	#1669
TOTALS	106*	1019	-913

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

📊

Passing Visuals

Category:

🔄Passing Circle

🌊Position Flow

🏃Race Lanes

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Results processed 26 days ago

Official Timing Data

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The San Francisco Marathon

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