Chun-Ju Chang

Bib: 9312MAge: 37

San Francisco, CA

0:00
0:00
/ mi
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Overall
#0 / 5177
Gender (Male)
#0 / 2862
Division (M35-39)
#0 / 418
Race Day Weather
56°/46°F
overcast clouds

⏱️ Race Timeline

Course Elevation
10277 ft
×22story building
774 ft climb · 557 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
2.13M
12:17/mi
26:10
→ flat
6.62M
9:40/mi
1:09:34
299780.9%
7.12M
15:50/mi
1:17:29
271.0%
10.65M
11:53/mi
1:59:25
1273601.3%
Finish· 13.11 mi
11:14/mi
2:27:03
2441141.0%

The Course

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Half Splits

1st Half· via 6.62MFaster
Distance6.62 mi
Time1:09:34
Pace10:31 /mi
2nd Half
Distance6.49 mi
Time1:17:29
Pace11:56 /mi
📊Positive Split: 11.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
2.13M
2.13 mi07:35:3926:1012:1726:10
12:17
-
6.62M
6.62 mi08:19:031:09:3410:3143:24
9:40
-2:37
7.12M
7.12 mi08:26:581:17:2910:537:55
15:50
+6:10
10.65M
10.65 mi09:08:541:59:2511:1341:56
11:53
-3:57
Finish
13.11 mi09:36:322:27:0311:1327:38
11:14
-0:39

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

9:40 /mi

Average Pace

11:13 /mi

Slowest Pace

15:50 /mi

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Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

43:24

30% of race

Time at Steady Pace

1:35:44

65% of race

Time at Slower Pace

7:55

5% of race

Average Pace: 11:13 /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
2.13M
2.13 mi07:35:3926:1012:1726:10
12:17
#2364
6.62M
6.62 mi08:19:031:09:3410:3143:24
9:40
#2383
7.12M
7.12 mi08:26:581:17:2910:537:55
15:50
#2552
10.65M
10.65 mi09:08:541:59:2511:1341:56
11:53
#3371
Finish
13.11 mi09:36:322:27:0311:1327:38
11:14
#3492
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM35-39Seg. OverallSeg. MalesSeg. M35-39
2.13M2.13 mi2.13 mi236415942352364(Top 46%)1594(Top 56%)235(Top 56%)
6.62M6.62 mi4.49 mi2383-191611-17230+52405(Top 46%)1602(Top 56%)227(Top 54%)
7.12M7.12 mi0.50 mi2552-1691694-83242-123723(Top 72%)2272(Top 79%)333(Top 80%)
10.65M10.65 mi3.53 mi3371-8192094-400307-654494(Top 87%)2574(Top 90%)379(Top 91%)
Finish13.11 mi2.46 mi3492-1212138-44313-63947(Top 76%)2300(Top 80%)333(Top 80%)

Segment Performance Analysis

Start → 2.13M

0.0 - 2.1 mi

Top 46%
~flat
+6ft-3ft

Overall

2364

Males

1594

M35-39

238

2.13M→6.62M

2.1 - 6.6 mi

Top 46%
×19story building
+299ft-78ft

Overall

2405

Males

1602

M35-39

229

6.62M→7.12M

6.6 - 7.1 mi

Top 72%
×2story building
+27ft-0ft

Overall

3723

Males

2272

M35-39

334

7.12M→10.65M

7.1 - 10.7 mi

Top 87%
×21story building
+127ft-360ft

Overall

4494

Males

2574

M35-39

381

10.65M→Finish

10.7 - 13.1 mi

Top 76%
×17story building
+244ft-114ft

Overall

3947

Males

2300

M35-39

333

Passing Analysis

Category:
Athletes Passed
222*
Passed By
1350
Net Change
-1128
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 2.13M----#2364
2.13M6.62M183*202-19#2364#2383
6.62M7.12M8177-169#2383#2552
7.12M10.65M4*823-819#2552#3371
10.65MFinish27*148-121#3371#3492
TOTALS222*1350-1128

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

📊

Passing Visuals

Category:
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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

Race Place Events

Race Place Events