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BOSTON MARATHON 2023

Ka Leung Chan

Bib: 5695•M

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 14%
Gender (Male)
#0 / 15176
Top 23%
Division (M18-39)
#0 / 5285
Top 47%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:00
Rank: #4238
Start → 5K
21:00 | 6:46/mi
10K· 6.21 mi
41:36
Rank: #3923 (+315)
5K → 10K
20:36 | 6:38/mi
15K· 9.32 mi
1:02:06
Rank: #3647 (+276)
10K → 15K
20:30 | 6:36/mi
20K· 12.43 mi
1:22:58
Rank: #3651 (-4)
15K → 20K
20:52 | 6:43/mi
Half· 13.11 mi
1:27:30
Rank: #3660 (-9)
20K → Half
4:32 | 6:39/mi
25K· 15.53 mi
1:43:48
Rank: #3616 (+44)
Half → 25K
16:18 | 6:43/mi
30K· 18.64 mi
2:05:32
Rank: #3724 (-108)
25K → 30K
21:44 | 7:00/mi
20M
2:15:10
Rank: #3760 (-36)
30K → 20M
9:38 | 7:05/mi
21M
2:22:41
Rank: #3803 (-43)
20M → 21M
7:31 | 7:31/mi
35K· 21.75 mi
2:27:44
Rank: #3808 (-5)
21M → 35K
5:03 | 6:45/mi
23M
2:36:15
Rank: #3691 (+117)
35K → 23M
8:31 | 6:48/mi
24M
2:42:58
Rank: #3640 (+51)
23M → 24M
6:43 | 6:43/mi
40K· 24.85 mi
2:48:50
Rank: #3584 (+56)
24M → 40K
5:52 | 6:52/mi
25.2M
2:51:29
Rank: #3613 (-29)
40K → 25.2M
2:39 | 7:41/mi
Finish· 26.22 mi
2:58:30
Rank: #3660 (-47)
25.2M → Finish
7:01 | 6:53/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:27:30
Pace6:40 /mi
2nd Half
Distance13.11 mi
Time1:31:00
Pace6:57 /mi
📊Positive Split: 4.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:5021:006:4621:00
6:46
-
10K
6.21 mi10:44:2641:366:4220:36
6:38
-0:08
15K
9.32 mi11:04:561:02:066:4020:30
6:36
-0:02
20K
12.43 mi11:25:481:22:586:4120:52
6:43
+0:07
Half
13.11 mi11:30:201:27:306:404:32
6:39
-0:04
25K
15.53 mi11:46:381:43:486:4116:18
6:43
+0:04
30K
18.64 mi12:08:222:05:326:4421:44
7:00
+0:17
20M
20.00 mi12:18:002:15:106:459:38
7:05
+0:05
21M
21.00 mi12:25:312:22:416:487:31
7:31
+0:26
35K
21.75 mi12:30:342:27:446:485:03
6:45
-0:46
23M
23.00 mi12:39:052:36:156:488:31
6:48
+0:03
24M
24.00 mi12:45:482:42:586:476:43
6:43
-0:05
40K
24.85 mi12:51:402:48:506:485:52
6:52
+0:09
25.2M
25.20 mi12:54:192:51:296:482:39
7:41
+0:49
Finish
26.22 mi13:01:202:58:306:497:01
6:53
-0:48

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

6:36 /mi

Average Pace

6:49 /mi

Slowest Pace

7:41 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:48:20

94% of race

Time at Steady Pace

10:10

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:48 /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.

Loading...
0mi6.6mi13.1mi19.7mi26.2mi
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
5K
3.11 mi10:23:5021:006:4621:00
6:46
#4238
10K
6.21 mi10:44:2641:366:4220:36
6:38
#3923
15K
9.32 mi11:04:561:02:066:4020:30
6:36
#3647
20K
12.43 mi11:25:481:22:586:4120:52
6:43
#3651
Half
13.11 mi11:30:201:27:306:404:32
6:39
#3660
25K
15.53 mi11:46:381:43:486:4116:18
6:43
#3616
30K
18.64 mi12:08:222:05:326:4421:44
7:00
#3724
20M
20.00 mi12:18:002:15:106:459:38
7:05
#3760
21M
21.00 mi12:25:312:22:416:487:31
7:31
#3803
35K
21.75 mi12:30:342:27:446:485:03
6:45
#3808
23M
23.00 mi12:39:052:36:156:488:31
6:48
#3691
24M
24.00 mi12:45:482:42:586:476:43
6:43
#3640
40K
24.85 mi12:51:402:48:506:485:52
6:52
#3584
25.2M
25.20 mi12:54:192:51:296:482:39
7:41
#3613
Finish
26.22 mi13:01:202:58:306:497:01
6:53
#3660
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi4238396739673282(Top 12%)3117(Top 21%)3117(Top 59%)
10K6.21 mi3.10 mi3923+3153693+2743693+2743720(Top 14%)3515(Top 23%)3515(Top 67%)
15K9.32 mi3.11 mi3647+2763445+2483445+2483282(Top 12%)3117(Top 21%)3117(Top 59%)
20K12.43 mi3.11 mi3651-43455-103455-103698(Top 14%)3497(Top 23%)3497(Top 66%)
Half13.11 mi0.68 mi3660-93462-73462-73792(Top 14%)3576(Top 24%)3576(Top 68%)
25K15.53 mi2.42 mi3616+443421+413421+413548(Top 13%)3353(Top 22%)3353(Top 63%)
30K18.64 mi3.11 mi3724-1083518-973518-974304(Top 16%)4002(Top 26%)4002(Top 76%)
20M20.00 mi1.36 mi3760-363548-303548-304523(Top 17%)4148(Top 27%)4148(Top 78%)
21M21.00 mi1.00 mi3803-433581-333581-334632(Top 17%)4198(Top 28%)4198(Top 79%)
35K21.75 mi0.75 mi3808-53584-33584-33853(Top 14%)3547(Top 23%)3547(Top 67%)
23M23.00 mi1.25 mi3691+1173480+1043480+1042685(Top 10%)2518(Top 17%)2518(Top 48%)
24M24.00 mi1.00 mi3640+513433+473433+473205(Top 12%)2971(Top 20%)2971(Top 56%)
40K24.85 mi0.85 mi3584+563379+543379+543113(Top 12%)2857(Top 19%)2857(Top 54%)
25.2M25.20 mi0.35 mi3613-293402-233402-234732(Top 18%)4085(Top 27%)4085(Top 77%)
Finish26.22 mi1.02 mi3660-473441-393441-394522(Top 17%)3930(Top 26%)3930(Top 74%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 12%
×21stories
+97ft-345ft

Overall

3282

Males

3117

M18-39

3117

5K→10K

3.1 - 6.2 mi

Top 14%
×5stories
+79ft-138ft

Overall

3720

Males

3515

M18-39

3515

10K→15K

6.2 - 9.3 mi

Top 12%
×3stories
+67ft-78ft

Overall

3282

Males

3117

M18-39

3117

15K→20K

9.3 - 12.4 mi

Top 14%
×5stories
+106ft-86ft

Overall

3698

Males

3497

M18-39

3497

20K→Half

12.4 - 13.1 mi

Top 14%
×2stories
+19ft-37ft

Overall

3792

Males

3576

M18-39

3576

Half→25K

13.1 - 15.5 mi

Top 13%
×4stories
+66ft-88ft

Overall

3548

Males

3353

M18-39

3353

25K→30K

15.5 - 18.6 mi

Top 16%
×9stories
+181ft-148ft

Overall

4304

Males

4002

M18-39

4002

30K→20M

18.6 - 20.0 mi

Top 17%
×5stories
+64ft-50ft

Overall

4523

Males

4148

M18-39

4148

20M→21M

20.0 - 21.0 mi

Top 17%
×8stories
+106ft-24ft

Overall

4632

Males

4198

M18-39

4198

21M→35K

21.0 - 21.8 mi

Top 14%
×7stories
+17ft-86ft

Overall

3853

Males

3547

M18-39

3547

35K→23M

21.8 - 23.0 mi

Top 10%
×5stories
+23ft-63ft

Overall

2685

Males

2518

M18-39

2518

23M→24M

23.0 - 24.0 mi

Top 12%
×6stories
+12ft-82ft

Overall

3205

Males

2971

M18-39

2971

24M→40K

24.0 - 24.9 mi

Top 12%
×1story
+6ft-20ft

Overall

3113

Males

2857

M18-39

2857

40K→25.2M

24.9 - 25.2 mi

Top 18%
×1story
+13ft-16ft

Overall

4732

Males

4085

M18-39

4085

25.2M→Finish

25.2 - 26.2 mi

Top 17%
×2stories
+22ft-21ft

Overall

4522

Males

3930

M18-39

3930

Passing Analysis

Category:
Athletes Passed
1441
Passed By
863
Net Change
+578
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4238
5K → 10K422107+315#4238#3923
10K → 15K29822+276#3923#3647
15K → 20K9195-4#3647#3651
20K → Half1221-9#3651#3660
Half → 25K10056+44#3660#3616
25K → 30K76184-108#3616#3724
30K → 20M4379-36#3724#3760
20M → 21M4790-43#3760#3803
21M → 35K2732-5#3803#3808
35K → 23M13215+117#3808#3691
23M → 24M7120+51#3691#3640
24M → 40K7418+56#3640#3584
40K → 25.2M1039-29#3584#3613
25.2M → Finish3885-47#3613#3660
TOTALS1441863+578
📊

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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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing