Samuel Chui

Bib: 14751MAge: 44

MILLBRAE, CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 7100
Top 30%
Gender (Male)
#0 / 3977
Top 40%
Masters (Masters Men)
#0 / 1096
Top 31%
Division (M40-44)
#0 / 336
Top 40%
Race Day Weather
56°/46°F
light rain

⏱️ 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
1.81M
8:09/mi
14:46
→ flat
5.34M
8:26/mi
44:32
8074
6.15M
8:51/mi
51:42
1262.8%
10.54M
9:26/mi
1:33:08
2303610.6%
11.05M
15:49/mi
1:41:12
1726.4%
Finish· 13.11 mi
11:58/mi
2:05:50
971140.2%

The Course

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Half Splits

1st Half· via 6.15MFaster
Distance6.15 mi
Time51:42
Pace8:24 /mi
2nd Half
Distance6.96 mi
Time1:14:08
Pace10:39 /mi
📊Positive Split: 43.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
1.81M
1.81 mi06:47:4614:468:0914:46
8:09
-
5.34M
5.34 mi07:17:3244:328:2029:46
8:26
+0:17
6.15M
6.15 mi07:24:4251:428:247:10
8:51
+0:25
10.54M
10.54 mi08:06:081:33:088:5041:26
9:26
+0:35
11.05M
11.05 mi08:14:121:41:129:108:04
15:49
+6:23
Finish
13.11 mi08:38:502:05:509:3624:38
11:58
-3:51

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

8:09 /mi

Average Pace

9:36 /mi

Slowest Pace

15:49 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

1:33:08

74% of race

Time at Slower Pace

32:42

26% of race

Average Pace: 9:36 /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
1.81M
1.81 mi06:47:4614:468:0914:46
8:09
#808
5.34M
5.34 mi07:17:3244:328:2029:46
8:26
#922
6.15M
6.15 mi07:24:4251:428:247:10
8:51
#937
10.54M
10.54 mi08:06:081:33:088:5041:26
9:26
#1372
11.05M
11.05 mi08:14:121:41:129:108:04
15:49
#1630
Finish
13.11 mi08:38:502:05:509:3624:38
11:58
#2161
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
1.81M1.81 mi1.81 mi80866759808(Top 11%)667(Top 17%)59(Top 18%)
5.34M5.34 mi3.53 mi922-114751-8464-51027(Top 14%)829(Top 21%)70(Top 21%)
6.15M6.15 mi0.81 mi937-15767-1665-11140(Top 16%)913(Top 23%)70(Top 21%)
10.54M10.54 mi4.39 mi1372-4351083-31689-242146(Top 30%)1574(Top 40%)131(Top 39%)
11.05M11.05 mi0.51 mi1630-2581258-175103-144448(Top 63%)2766(Top 70%)235(Top 70%)
Finish13.11 mi2.06 mi2161-5311576-318135-324915(Top 69%)2943(Top 74%)251(Top 75%)

Segment Performance Analysis

Start → 1.81M

0.0 - 1.8 mi

Top 11%
~flat
+4ft-3ft

Overall

808

Males

667

M40-44

59

1.81M→5.34M

1.8 - 5.3 mi

Top 14%
×4story building
+80ft-74ft

Overall

1027

Males

829

M40-44

70

5.34M→6.15M

5.3 - 6.2 mi

Top 16%
×10story building
+126ft-4ft

Overall

1140

Males

913

M40-44

70

6.15M→10.54M

6.2 - 10.5 mi

Top 30%
×21story building
+230ft-361ft

Overall

2146

Males

1574

M40-44

131

10.54M→11.05M

10.5 - 11.1 mi

Top 63%
×14story building
+172ft-0ft

Overall

4448

Males

2766

M40-44

235

11.05M→Finish

11.1 - 13.1 mi

Top 69%
×7story building
+97ft-114ft

Overall

4915

Males

2943

M40-44

251

Passing Analysis

Category:
Athletes Passed
87*
Passed By
1440
Net Change
-1353
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 1.81M----#808
1.81M5.34M52166-114#808#922
5.34M6.15M2237-15#922#937
6.15M10.54M4439-435#937#1372
10.54M11.05M2260-258#1372#1630
11.05MFinish7*538-531#1630#2161
TOTALS87*1440-1353

* 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