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BOSTON MARATHON 2023

Chan Kang Jun

Bib: 29767•M

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

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
10:32/mi
32:42
↑ 97↓ 3451.5%
10K· 6.21 mi
10:20/mi
1:04:48
↑ 79↓ 1380.4%
15K· 9.32 mi
9:52/mi
1:35:28
↑ 67↓ 78
20K· 12.43 mi
11:14/mi
2:10:21
↑ 106↓ 860.1%
Half· 13.11 mi
11:19/mi
2:18:04
↑ 19↓ 370.5%
25K· 15.53 mi
12:24/mi
2:48:08
↑ 66↓ 880.2%
30K· 18.64 mi
12:20/mi
3:26:26
↑ 181↓ 1480.2%
20M
13:38/mi
3:44:57
↑ 64↓ 500.2%
21M
13:28/mi
3:58:25
↑ 106↓ 241.6%
35K· 21.75 mi
12:31/mi
4:07:47
↑ 17↓ 861.7%
23M
12:35/mi
4:23:32
↑ 23↓ 630.6%
24M
13:58/mi
4:37:30
↓ 821.3%
40K· 24.85 mi
15:19/mi
4:50:36
↓ 200.3%
25.2M
14:44/mi
4:55:41
↑ 13↓ 160.2%
Finish· 26.22 mi
12:19/mi
5:08:14
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:18:04
Pace10:32 /mi
2nd Half
Distance13.11 mi
Time2:50:10
Pace12:59 /mi
📊Positive Split: 23.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:53:3732:4210:3232:42
10:32
-
10K
6.21 mi12:25:431:04:4810:2632:06
10:20
-0:12
15K
9.32 mi12:56:231:35:2810:1530:40
9:52
-0:28
20K
12.43 mi13:31:162:10:2110:2934:53
11:14
+1:22
Half
13.11 mi13:38:592:18:0410:327:43
11:19
+0:05
25K
15.53 mi14:09:032:48:0810:4930:04
12:24
+1:05
30K
18.64 mi14:47:213:26:2611:0438:18
12:20
-0:04
20M
20.00 mi15:05:523:44:5711:1518:31
13:38
+1:18
21M
21.00 mi15:19:203:58:2511:2113:28
13:28
-0:10
35K
21.75 mi15:28:424:07:4711:249:22
12:31
-0:57
23M
23.00 mi15:44:274:23:3211:2715:45
12:35
+0:04
24M
24.00 mi15:58:254:37:3011:3413:58
13:58
+1:23
40K
24.85 mi16:11:314:50:3611:4213:06
15:19
+1:21
25.2M
25.20 mi16:16:364:55:4111:445:05
14:44
-0:35
Finish
26.22 mi16:29:095:08:1411:4612:33
12:19
-2:25

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

9:52 /mi

Average Pace

11:46 /mi

Slowest Pace

15:19 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:18:04

45% of race

Time at Steady Pace

1:46:02

34% of race

Time at Slower Pace

1:04:08

21% of race

Average Pace: 11:45 /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 mi11:53:3732:4210:3232:42
10:32
#24769
10K
6.21 mi12:25:431:04:4810:2632:06
10:20
#24555
15K
9.32 mi12:56:231:35:2810:1530:40
9:52
#24102
20K
12.43 mi13:31:162:10:2110:2934:53
11:14
#24397
Half
13.11 mi13:38:592:18:0410:327:43
11:19
#24460
25K
15.53 mi14:09:032:48:0810:4930:04
12:24
#24738
30K
18.64 mi14:47:213:26:2611:0438:18
12:20
#24792
20M
20.00 mi15:05:523:44:5711:1518:31
13:38
#24908
21M
21.00 mi15:19:203:58:2511:2113:28
13:28
#24892
35K
21.75 mi15:28:424:07:4711:249:22
12:31
#24927
23M
23.00 mi15:44:274:23:3211:2715:45
12:35
#24939
24M
24.00 mi15:58:254:37:3011:3413:58
13:58
#25044
40K
24.85 mi16:11:314:50:3611:4213:06
15:19
#25131
25.2M
25.20 mi16:16:364:55:4111:445:05
14:44
#25143
Finish
26.22 mi16:29:095:08:1411:4612:33
12:19
#25173
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi24769144341443423237(Top 87%)13752(Top 91%)13752(Top 260%)
10K6.21 mi3.10 mi24555+21414343+9114343+9124357(Top 91%)14245(Top 94%)14245(Top 270%)
15K9.32 mi3.11 mi24102+45314133+21014133+21023237(Top 87%)13752(Top 91%)13752(Top 260%)
20K12.43 mi3.11 mi24397-29514259-12614259-12624913(Top 94%)14463(Top 95%)14463(Top 274%)
Half13.11 mi0.68 mi24460-6314283-2414283-2425302(Top 95%)14608(Top 96%)14608(Top 276%)
25K15.53 mi2.42 mi24738-27814396-11314396-11325459(Top 96%)14676(Top 97%)14676(Top 278%)
30K18.64 mi3.11 mi24792-5414398-214398-224836(Top 93%)14337(Top 94%)14337(Top 271%)
20M20.00 mi1.36 mi24908-11614440-4214440-4225616(Top 96%)14678(Top 97%)14678(Top 278%)
21M21.00 mi1.00 mi24892+1614426+1414426+1424550(Top 92%)14159(Top 93%)14159(Top 268%)
35K21.75 mi0.75 mi24927-3514434-814434-825200(Top 95%)14420(Top 95%)14420(Top 273%)
23M23.00 mi1.25 mi24939-1214431+314431+324658(Top 93%)14172(Top 93%)14172(Top 268%)
24M24.00 mi1.00 mi25044-10514475-4414475-4426057(Top 98%)14841(Top 98%)14841(Top 281%)
40K24.85 mi0.85 mi25131-8714505-3014505-3026263(Top 99%)14948(Top 98%)14948(Top 283%)
25.2M25.20 mi0.35 mi25143-1214513-814513-825548(Top 96%)14572(Top 96%)14572(Top 276%)
Finish26.22 mi1.02 mi25173-3014525-1214525-1225522(Top 96%)14569(Top 96%)14569(Top 276%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 87%
×21story building
+97ft-345ft

Overall

23237

Males

13752

M18-39

13752

5K→10K

3.1 - 6.2 mi

Top 91%
×5story building
+79ft-138ft

Overall

24357

Males

14245

M18-39

14245

10K→15K

6.2 - 9.3 mi

Top 87%
×3story building
+67ft-78ft

Overall

23237

Males

13752

M18-39

13752

15K→20K

9.3 - 12.4 mi

Top 94%
×5story building
+106ft-86ft

Overall

24913

Males

14463

M18-39

14463

20K→Half

12.4 - 13.1 mi

Top 95%
×2story building
+19ft-37ft

Overall

25302

Males

14608

M18-39

14608

Half→25K

13.1 - 15.5 mi

Top 96%
×4story building
+66ft-88ft

Overall

25459

Males

14676

M18-39

14676

25K→30K

15.5 - 18.6 mi

Top 93%
×9story building
+181ft-148ft

Overall

24836

Males

14337

M18-39

14337

30K→20M

18.6 - 20.0 mi

Top 96%
×5story building
+64ft-50ft

Overall

25616

Males

14678

M18-39

14678

20M→21M

20.0 - 21.0 mi

Top 92%
×8story building
+106ft-24ft

Overall

24550

Males

14159

M18-39

14159

21M→35K

21.0 - 21.8 mi

Top 95%
×7story building
+17ft-86ft

Overall

25200

Males

14420

M18-39

14420

35K→23M

21.8 - 23.0 mi

Top 93%
×5story building
+23ft-63ft

Overall

24658

Males

14172

M18-39

14172

23M→24M

23.0 - 24.0 mi

Top 98%
×6story building
+12ft-82ft

Overall

26057

Males

14841

M18-39

14841

24M→40K

24.0 - 24.9 mi

Top 99%
×1story
+6ft-20ft

Overall

26263

Males

14948

M18-39

14948

40K→25.2M

24.9 - 25.2 mi

Top 96%
×1story
+13ft-16ft

Overall

25548

Males

14572

M18-39

14572

25.2M→Finish

25.2 - 26.2 mi

Top 96%
×2story building
+22ft-21ft

Overall

25522

Males

14569

M18-39

14569

Passing Analysis

Category:
Athletes Passed
1043
Passed By
1447
Net Change
-404
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24769
5K → 10K324110+214#24769#24555
10K → 15K46815+453#24555#24102
15K → 20K34329-295#24102#24397
20K → Half871-63#24397#24460
Half → 25K16294-278#24460#24738
25K → 30K70124-54#24738#24792
30K → 20M18134-116#24792#24908
20M → 21M4630+16#24908#24892
21M → 35K1348-35#24892#24927
35K → 23M2537-12#24927#24939
23M → 24M2107-105#24939#25044
24M → 40K390-87#25044#25131
40K → 25.2M618-12#25131#25143
25.2M → Finish1040-30#25143#25173
TOTALS10431447-404
📊

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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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing