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BOSTON MARATHON 2023

Yibin Kang

NJ

Bib: 27143 M

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M45-49)
#0 / 2252
Race Day Weather
49°/39°F
light intensity drizzle

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
8:49/mi
27:22
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
8:05/mi
52:30
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
8:02/mi
1:17:27
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
8:03/mi
1:42:28
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
7:52/mi
1:47:50
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
8:03/mi
2:07:21
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
8:20/mi
2:33:15
↑ 181↓ 1480.2%
138 ft elev
20M
8:47/mi
2:45:12
↑ 64↓ 500.2%
148 ft elev
21M
8:47/mi
2:53:59
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
8:24/mi
3:00:16
↑ 17↓ 861.7%
156 ft elev
23M
8:47/mi
3:11:16
↑ 23↓ 630.6%
116 ft elev
24M
8:51/mi
3:20:07
↓ 821.3%
34 ft elev
40K· 24.85 mi
8:58/mi
3:27:47
↓ 200.3%
20 ft elev
25.2M
9:28/mi
3:31:03
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
8:43/mi
3:39:56
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Half Splits

1st Half· via Half
1:47:508:14 /mi⚡ faster
2nd Half
1:52:068:33 /mi+4.0%
Positive split — 4.0% slower in the second half
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Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
5K
27:228:493.11 mi27:22
8:49
-
10K
52:308:273.10 mi25:08
8:05
-0:44
15K
1:17:278:193.11 mi24:57
8:02
-0:03
20K
1:42:288:153.11 mi25:01
8:03
+0:01
Half(13.11 mi)
1:47:508:140.68 mi5:22
7:52
-0:11
25K
2:07:218:122.42 mi19:31
8:03
+0:11
30K
2:33:158:133.11 mi25:54
8:20
+0:17
20M
2:45:128:161.36 mi11:57
8:47
+0:27
21M
2:53:598:171.00 mi8:47
8:47
0:00
35K
3:00:168:170.75 mi6:17
8:24
-0:23
23M
3:11:168:191.25 mi11:00
8:47
+0:23
24M
3:20:078:201.00 mi8:51
8:51
+0:04
40K
3:27:478:220.85 mi7:40
8:58
+0:07
25.2M
3:31:038:230.35 mi3:16
9:28
+0:30
Finish(26.22 mi)
3:39:568:241.02 mi8:53
8:43
-0:45
Trend:
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoints & Pacing

Pace Line

Fastest Pace

7:52 /mi

Average Pace

8:24 /mi

Slowest Pace

9:28 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

2:12:10

60% of race

Time at Steady Pace

1:16:50

35% of race

Time at Slower Pace

10:56

5% of race

Average Pace: 8:23 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

Heatmap

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0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Checkpoint and Segment Rankings

CheckpointSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi194961196211962146291014810148
10K3.10 mi17532+196411266+69611266+696154291048610486
15K3.11 mi16579+95310907+35910907+359146291014810148
20K3.11 mi15884+69510633+27410633+2741384398179817
Half(13.11 mi)0.68 mi15756+12810581+5210581+521328596159615
25K2.42 mi15337+41910395+18610395+1861313694219421
30K3.11 mi14956+38110220+17510220+1751326893549354
20M1.36 mi14960-410195+2510195+25153581013510135
21M1.00 mi14787+17310111+8410111+841221086658665
35K0.75 mi14760+2710083+2810083+281468497359735
23M1.25 mi14777-1710055+2810055+281488997599759
24M1.00 mi14826-4910061-610061-6164661038110381
40K0.85 mi14845-1910037+2410037+24159411010210102
25.2M0.35 mi14834+1110022+1510022+151500596819681
Finish(26.22 mi)1.02 mi14930-9610043-2110043-21165501040210402

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 55%
×21story building
+97ft-345ft

Overall

14629

Males

10148

M45-49

10148

5K→10K

3.1 - 6.2 mi

Top 58%
×5story building
+79ft-138ft

Overall

15429

Males

10486

M45-49

10486

10K→15K

6.2 - 9.3 mi

Top 55%
×3story building
+67ft-78ft

Overall

14629

Males

10148

M45-49

10148

15K→20K

9.3 - 12.4 mi

Top 52%
×5story building
+106ft-86ft

Overall

13843

Males

9817

M45-49

9817

20K→Half

12.4 - 13.1 mi

Top 50%
×2story building
+19ft-37ft

Overall

13285

Males

9615

M45-49

9615

Half→25K

13.1 - 15.5 mi

Top 49%
×4story building
+66ft-88ft

Overall

13136

Males

9421

M45-49

9421

25K→30K

15.5 - 18.6 mi

Top 50%
×9story building
+181ft-148ft

Overall

13268

Males

9354

M45-49

9354

30K→20M

18.6 - 20.0 mi

Top 58%
×5story building
+64ft-50ft

Overall

15358

Males

10135

M45-49

10135

20M→21M

20.0 - 21.0 mi

Top 46%
×8story building
+106ft-24ft

Overall

12210

Males

8665

M45-49

8665

21M→35K

21.0 - 21.8 mi

Top 55%
×7story building
+17ft-86ft

Overall

14684

Males

9735

M45-49

9735

35K→23M

21.8 - 23.0 mi

Top 56%
×5story building
+23ft-63ft

Overall

14889

Males

9759

M45-49

9759

23M→24M

23.0 - 24.0 mi

Top 62%
×6story building
+12ft-82ft

Overall

16466

Males

10381

M45-49

10381

24M→40K

24.0 - 24.9 mi

Top 60%
×1story
+6ft-20ft

Overall

15941

Males

10102

M45-49

10102

40K→25.2M

24.9 - 25.2 mi

Top 56%
×1story
+13ft-16ft

Overall

15005

Males

9681

M45-49

9681

25.2M→Finish

25.2 - 26.2 mi

Top 62%
×2story building
+22ft-21ft

Overall

16550

Males

10402

M45-49

10402

Passing Analysis

Category:
▲Net Change
+0
0 passed by0 passed
SegmentMovementRank
Start → 5K-#19496
5K → 10K
181982+1964
#19496 → #17532
10K → 15K
17970+953
#17532 → #16579
15K → 20K
7702+695
#16579 → #15884
20K → Half
1129+128
#15884 → #15756
Half → 25K
12431+419
#15756 → #15337
25K → 30K
25406+381
#15337 → #14956
30K → 20M
8480-4
#14956 → #14960
20M → 21M
11184+173
#14960 → #14787
21M → 35K
3663+27
#14787 → #14760
35K → 23M
9477-17
#14760 → #14777
23M → 24M
9748-49
#14777 → #14826
24M → 40K
7253-19
#14826 → #14845
40K → 25.2M
2536+11
#14845 → #14834
25.2M → Finish
13236-96
#14834 → #14930
TOTALS
6315197+4566
#19496 → #14930

Passing Visualized

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