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BOSTON MARATHON 2023

Kyungjun Li

Bib: 24494•F

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F65-69)
#0 / 221
Top 30%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
32:14
Rank: #24419
Start → 5K
10:22/mi
32:14 split
10K· 6.21 mi
1:02:35
Rank: #23789 (+630)
5K → 10K
9:46/mi
30:21 split
15K· 9.32 mi
1:32:07
Rank: #23323 (+466)
10K → 15K
9:30/mi
29:32 split
20K· 12.43 mi
2:01:40
Rank: #22913 (+410)
15K → 20K
9:31/mi
29:33 split
Half· 13.11 mi
2:07:45
Rank: #22788 (+125)
20K → Half
8:55/mi
6:05 split
25K· 15.53 mi
2:32:04
Rank: #22685 (+103)
Half → 25K
10:02/mi
24:19 split
30K· 18.64 mi
3:02:18
Rank: #22296 (+389)
25K → 30K
9:44/mi
30:14 split
20M
3:14:46
Rank: #21986 (+310)
30K → 20M
9:10/mi
12:28 split
21M
3:25:25
Rank: #21882 (+104)
20M → 21M
10:39/mi
10:39 split
35K· 21.75 mi
3:32:08
Rank: #21768 (+114)
21M → 35K
8:59/mi
6:43 split
23M
3:44:05
Rank: #21579 (+189)
35K → 23M
9:33/mi
11:57 split
24M
3:54:02
Rank: #21540 (+39)
23M → 24M
9:57/mi
9:57 split
40K· 24.85 mi
4:02:25
Rank: #21461 (+79)
24M → 40K
9:48/mi
8:23 split
25.2M
4:06:52
Rank: #21518 (-57)
40K → 25.2M
12:54/mi
4:27 split
Finish· 26.22 mi
4:16:29
Rank: #21461 (+57)
25.2M → Finish
9:26/mi
9:37 split

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time2:07:45
Pace9:45 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time2:08:44
Pace9:49 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:52:1132:1410:2232:14
10:22
-
10K
6.21 mi12:22:321:02:3510:0430:21
9:46
-0:36
15K
9.32 mi12:52:041:32:079:5329:32
9:30
-0:16
20K
12.43 mi13:21:372:01:409:4729:33
9:31
+0:01
Half
13.11 mi13:27:422:07:459:456:05
8:55
-0:36
25K
15.53 mi13:52:012:32:049:4724:19
10:02
+1:07
30K
18.64 mi14:22:153:02:189:4730:14
9:44
-0:18
20M
20.00 mi14:34:433:14:469:4412:28
9:10
-0:34
21M
21.00 mi14:45:223:25:259:4710:39
10:39
+1:29
35K
21.75 mi14:52:053:32:089:456:43
8:59
-1:40
23M
23.00 mi15:04:023:44:059:4511:57
9:33
+0:34
24M
24.00 mi15:13:593:54:029:459:57
9:57
+0:24
40K
24.85 mi15:22:224:02:259:458:23
9:48
-0:09
25.2M
25.20 mi15:26:494:06:529:484:27
12:54
+3:06
Finish
26.22 mi15:36:264:16:299:479:37
9:26
-3:28

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

8:55 /mi

Average Pace

9:47 /mi

Slowest Pace

12:54 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

25:16

10% of race

Time at Steady Pace

3:03:53

72% of race

Time at Slower Pace

47:20

18% of race

Average Pace: 9:47 /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 mi11:52:1132:1410:2232:14
10:22
#24419
10K
6.21 mi12:22:321:02:3510:0430:21
9:46
#23789
15K
9.32 mi12:52:041:32:079:5329:32
9:30
#23323
20K
12.43 mi13:21:372:01:409:4729:33
9:31
#22913
Half
13.11 mi13:27:422:07:459:456:05
8:55
#22788
25K
15.53 mi13:52:012:32:049:4724:19
10:02
#22685
30K
18.64 mi14:22:153:02:189:4730:14
9:44
#22296
20M
20.00 mi14:34:433:14:469:4412:28
9:10
#21986
21M
21.00 mi14:45:223:25:259:4710:39
10:39
#21882
35K
21.75 mi14:52:053:32:089:456:43
8:59
#21768
23M
23.00 mi15:04:023:44:059:4511:57
9:33
#21579
24M
24.00 mi15:13:593:54:029:459:57
9:57
#21540
40K
24.85 mi15:22:224:02:259:458:23
9:48
#21461
25.2M
25.20 mi15:26:494:06:529:484:27
12:54
#21518
Finish
26.22 mi15:36:264:16:299:479:37
9:26
#21461
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF65-69Seg. OverallSeg. FemalesSeg. F65-69
5K3.11 mi3.11 mi24419101081010822283(Top 84%)8953(Top 78%)8953(Top 4051%)
10K6.21 mi3.10 mi23789+6309779+3299779+32923209(Top 87%)9450(Top 83%)9450(Top 4276%)
15K9.32 mi3.11 mi23323+4669516+2639516+26322283(Top 84%)8953(Top 78%)8953(Top 4051%)
20K12.43 mi3.11 mi22913+4109302+2149302+21421597(Top 81%)8573(Top 75%)8573(Top 3879%)
Half13.11 mi0.68 mi22788+1259235+679235+6720120(Top 76%)7747(Top 68%)7747(Top 3505%)
25K15.53 mi2.42 mi22685+1039197+389197+3822276(Top 84%)8984(Top 79%)8984(Top 4065%)
30K18.64 mi3.11 mi22296+3899003+1949003+19420240(Top 76%)7906(Top 69%)7906(Top 3577%)
20M20.00 mi1.36 mi21986+3108838+1658838+16517454(Top 66%)6433(Top 56%)6433(Top 2911%)
21M21.00 mi1.00 mi21882+1048788+508788+5020025(Top 75%)7948(Top 70%)7948(Top 3596%)
35K21.75 mi0.75 mi21768+1148734+548734+5417873(Top 67%)6775(Top 59%)6775(Top 3066%)
23M23.00 mi1.25 mi21579+1898648+868648+8618516(Top 70%)7143(Top 63%)7143(Top 3232%)
24M24.00 mi1.00 mi21540+398636+128636+1220678(Top 78%)8376(Top 73%)8376(Top 3790%)
40K24.85 mi0.85 mi21461+798603+338603+3319428(Top 73%)7735(Top 68%)7735(Top 3500%)
25.2M25.20 mi0.35 mi21518-578640-378640-3723854(Top 90%)10113(Top 89%)10113(Top 4576%)
Finish26.22 mi1.02 mi21461+578617+238617+2319926(Top 75%)7959(Top 70%)7959(Top 3601%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 84%
×21story building
+97ft-345ft

Overall

22283

Females

8953

F65-69

8953

5K→10K

3.1 - 6.2 mi

Top 87%
×5story building
+79ft-138ft

Overall

23209

Females

9450

F65-69

9450

10K→15K

6.2 - 9.3 mi

Top 84%
×3story building
+67ft-78ft

Overall

22283

Females

8953

F65-69

8953

15K→20K

9.3 - 12.4 mi

Top 81%
×5story building
+106ft-86ft

Overall

21597

Females

8573

F65-69

8573

20K→Half

12.4 - 13.1 mi

Top 76%
×2story building
+19ft-37ft

Overall

20120

Females

7747

F65-69

7747

Half→25K

13.1 - 15.5 mi

Top 84%
×4story building
+66ft-88ft

Overall

22276

Females

8984

F65-69

8984

25K→30K

15.5 - 18.6 mi

Top 76%
×9story building
+181ft-148ft

Overall

20240

Females

7906

F65-69

7906

30K→20M

18.6 - 20.0 mi

Top 66%
×5story building
+64ft-50ft

Overall

17454

Females

6433

F65-69

6433

20M→21M

20.0 - 21.0 mi

Top 75%
×8story building
+106ft-24ft

Overall

20025

Females

7948

F65-69

7948

21M→35K

21.0 - 21.8 mi

Top 67%
×7story building
+17ft-86ft

Overall

17873

Females

6775

F65-69

6775

35K→23M

21.8 - 23.0 mi

Top 70%
×5story building
+23ft-63ft

Overall

18516

Females

7143

F65-69

7143

23M→24M

23.0 - 24.0 mi

Top 78%
×6story building
+12ft-82ft

Overall

20678

Females

8376

F65-69

8376

24M→40K

24.0 - 24.9 mi

Top 73%
×1story
+6ft-20ft

Overall

19428

Females

7735

F65-69

7735

40K→25.2M

24.9 - 25.2 mi

Top 90%
×1story
+13ft-16ft

Overall

23854

Females

10113

F65-69

10113

25.2M→Finish

25.2 - 26.2 mi

Top 75%
×2story building
+22ft-21ft

Overall

19926

Females

7959

F65-69

7959

Passing Analysis

Category:
Athletes Passed
3166
Passed By
208
Net Change
+2958
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24419
5K → 10K65828+630#24419#23789
10K → 15K4704+466#23789#23323
15K → 20K4188+410#23323#22913
20K → Half1250+125#22913#22788
Half → 25K14239+103#22788#22685
25K → 30K3945+389#22685#22296
30K → 20M3100+310#22296#21986
20M → 21M12016+104#21986#21882
21M → 35K1151+114#21882#21768
35K → 23M1912+189#21768#21579
23M → 24M5314+39#21579#21540
24M → 40K8910+79#21540#21461
40K → 25.2M764-57#21461#21518
25.2M → Finish7417+57#21518#21461
TOTALS3166208+2958
📊

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