Tzu-Yu Chang

Bib: 17455•M•Age: 38

San Jose, CA

0:00

0:00

/ mi

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Overall

#0 / 6575

Top 33%

Gender (Male)

#0 / 3619

Top 43%

Division (M35-39)

#0 / 582

Top 46%

Race Day Weather

59°/49°F

scattered clouds

⏱️ Race Timeline

Watch your race unfold from start to finish

Start

0:00:00

Race begins

Start

0:00:00

Race begins

19:50

Rank: #2889

Start → 2M

19:50 | 9:55/mi

19:50

Rank: #2889

Start → 2M

19:50 | 9:55/mi

38:54

Rank: #2478 (+411)

2M → 4M

19:04 | 9:32/mi

38:54

Rank: #2478 (+411)

2M → 4M

19:04 | 9:32/mi

57:48

Rank: #2272 (+206)

4M → 6M

18:54 | 9:27/mi

57:48

Rank: #2272 (+206)

4M → 6M

18:54 | 9:27/mi

1:15:46

Rank: #1958 (+314)

6M → 8M

17:58 | 8:59/mi

1:15:46

Rank: #1958 (+314)

6M → 8M

17:58 | 8:59/mi

9.6M

1:30:08

Rank: #2038 (-80)

8M → 9.6M

14:22 | 8:59/mi

9.6M

1:30:08

Rank: #2038 (-80)

8M → 9.6M

14:22 | 8:59/mi

10M

1:37:19

Rank: #2048 (-10)

9.6M → 10M

7:11 | 17:59/mi

10M

1:37:19

Rank: #2048 (-10)

9.6M → 10M

7:11 | 17:59/mi

10.5M

1:39:36

Rank: #2043 (+5)

10M → 10.5M

2:17 | 4:34/mi

10.5M

1:39:36

Rank: #2043 (+5)

10M → 10.5M

2:17 | 4:34/mi

12M

2:00:32

Rank: #2134 (-91)

10.5M → 12M

20:56 | 13:57/mi

12M

2:00:32

Rank: #2134 (-91)

10.5M → 12M

20:56 | 13:57/mi

Finish· 13.11 mi

2:11:42

Rank: #2173 (-39)

12M → Finish

11:10 | 10:04/mi

Finish· 13.11 mi

2:11:42

Rank: #2173 (-39)

12M → Finish

11:10 | 10:04/mi

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Half Splits

1st Half· via 6MFaster

Distance6.00 mi

Time57:48

Pace9:38 /mi

2nd Half

Distance7.11 mi

Time1:13:54

Pace10:24 /mi

📊Positive Split: 27.9% slower second half

Checkpoint Splits

Checkpoint	Distance	Time of Day	Time	Avg Pace	Segment Time	Segment Pace	Diff
2M	2.00 mi	07:00:06	19:50	9:55	19:50	9:55	-
4M	4.00 mi	07:19:10	38:54	9:44	19:04	9:32	-0:23
6M	6.00 mi	07:38:04	57:48	9:38	18:54	9:27	-0:05
8M	8.00 mi	07:56:02	1:15:46	9:28	17:58	8:59	-0:28
9.6M	9.60 mi	08:10:24	1:30:08	9:23	14:22	8:59	0:00
10M	10.00 mi	08:17:35	1:37:19	9:44	7:11	17:59	+9:00
10.5M	10.50 mi	08:19:52	1:39:36	9:29	2:17	4:34	-13:25
12M	12.00 mi	08:40:48	2:00:32	10:03	20:56	13:57	+9:23
Finish	13.11 mi	08:51:58	2:11:42	10:03	11:10	10:04	-3:53

Checkpoint Splits Visualizations

Explore your race data through different visual perspectives. Scroll to discover each visualization.

📈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

4:34 /mi

Average Pace

10:03 /mi

Slowest Pace

17:59 /mi

Loading chart...

Fastest

Middle

Slowest

Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

2:17

2% of race

Time at Steady Pace

1:41:18

77% of race

Time at Slower Pace

28:07

21% of race

Average Pace: 10:03 /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

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

Checkpoint	Distance	Time of Day	Time	Avg Pace	Segment	Pace	Rank
2M	2.00 mi	07:00:06	19:50	9:55	19:50	9:55	#2889
4M	4.00 mi	07:19:10	38:54	9:44	19:04	9:32	#2478
6M	6.00 mi	07:38:04	57:48	9:38	18:54	9:27	#2272
8M	8.00 mi	07:56:02	1:15:46	9:28	17:58	8:59	#1958
9.6M	9.60 mi	08:10:24	1:30:08	9:23	14:22	8:59	#2038
10M	10.00 mi	08:17:35	1:37:19	9:44	7:11	17:59	#2048
10.5M	10.50 mi	08:19:52	1:39:36	9:29	2:17	4:34	#2043
12M	12.00 mi	08:40:48	2:00:32	10:03	20:56	13:57	#2134
Finish	13.11 mi	08:51:58	2:11:42	10:03	11:10	10:04	#2173

Faster pace

Steady pace

Slower pace

Est.Checkpoint not recorded (estimated)

~Segment time uses estimated prior

Featured Segment

Garmin Challenge

Top 34%

Garmin Challenge

Garmin Challenge · 9.6–10.5 mi · © Mapbox © OpenStreetMap

9:28

Segment Time

10:31/mi

Pace

0.90 mi

Distance

Overall

2212

Men

1562

Division

262

See the full Garmin Challenge leaderboard

Checkpoint and Segment Rankings

Checkpoint	Distance	Seg. Dist	Overall	Males	M35-39	Seg. Overall	Seg. Males	Seg. M35-39
2M	2.00 mi	2.00 mi	2889	1983	342	2708(Top 41%)	1823(Top 50%)	308(Top 53%)
4M	4.00 mi	2.00 mi	2478+411	1749+234	299+43	2160(Top 33%)	1575(Top 44%)	263(Top 45%)
6M	6.00 mi	2.00 mi	2272+206	1632+117	278+21	1984(Top 30%)	1458(Top 40%)	254(Top 44%)
8M	8.00 mi	2.00 mi	1958+314	1460+172	252+26	1259(Top 19%)	994(Top 27%)	175(Top 30%)
9.6M	9.60 mi	1.60 mi	2038-80	1492-32	254-2	2714(Top 41%)	1723(Top 48%)	283(Top 49%)
10M	10.00 mi	0.40 mi	2048-10	1491+1	249+5	2352(Top 36%)	1647(Top 46%)	277(Top 48%)
10.5M	10.50 mi	0.50 mi	2043+5	1488+3	248+1	2017(Top 31%)	1464(Top 40%)	250(Top 43%)
12M	12.00 mi	1.50 mi	2134-91	1526-38	262-14	2708(Top 41%)	1823(Top 50%)	308(Top 53%)
Finish	13.11 mi	1.11 mi	2173-39	1554-28	267-5	2924(Top 44%)	1930(Top 53%)	311(Top 53%)

311

Passing Analysis

Category:

Athletes Passed

1108*

Passed By

392

Net Change

+716

Segment	Athletes Passed	Passed By	Net Change	Start Rank	End Rank
Start → 2M	-	-	-	-	#2889
2M → 4M	426	15	+411	#2889	#2478
4M → 6M	217	11	+206	#2478	#2272
6M → 8M	325*	11	+314	#2272	#1958
8M → 9.6M	48	128	-80	#1958	#2038
9.6M → 10M	23	33	-10	#2038	#2048
10M → 10.5M	10	5	+5	#2048	#2043
10.5M → 12M	32	123	-91	#2043	#2134
12M → Finish	27*	66	-39	#2134	#2173
TOTALS	1108*	392	+716

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

📊

Passing Analysis Visualizations

Explore your passing analysis through 5 different visualizations. Scroll to discover each one.

Time:

Category:

📈Position Graph

🎨Heatmap Timeline

🔄Passing Circle

🌊Position Flow

🏃Race Lanes

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Results processed 4 days ago

Official Timing Data

Enhanced athlete results built from official timing data.

Race managed by

The San Francisco Marathon

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Race Place Events

Tzu-Yu Chang

⏱️ Race Timeline

Race Animation with Course Map

Claim it — unlock a deeper AI report on this race, free

Half Splits

Checkpoint Splits

Checkpoint Splits Visualizations

📈Pace Line

Pace Progression

📊Segments

Segment Time Comparison

🎨Heatmap

Pace Heatmap

✨Sparklines

Checkpoint Splits with Pace Trends

Garmin Challenge

Checkpoint and Segment Rankings

Segment Performance Analysis

10.5M→12M

2M→4M

4M→6M

6M→8M

8M→9.6M

9.6M→10M

10M→10.5M

10.5M→12M

12M→Finish

Passing Analysis

Passing Analysis Visualizations

📈Position Graph

🎨Heatmap Timeline

🔄Passing Circle

🌊Position Flow

🏃Race Lanes

Export Track Data

Questions or issues regarding timing data?

Quick Links

All Results

Race Analytics

Course Information

Contact Time Management

Official Timing Data