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BOSTON MARATHON 2025

Ja Yeong Kang

Bib: 32150•F

VA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F45-49)
#0 / 1813
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
32:35
Rank: #26718
Start → 5K
32:35 | 10:29/mi
10K· 6.21 mi
1:06:05
Rank: #26742 (-24)
5K → 10K
33:30 | 10:47/mi
15K· 9.32 mi
1:40:15
Rank: #26712 (+30)
10K → 15K
34:10 | 11:00/mi
20K· 12.43 mi
2:15:29
Rank: #26641 (+71)
15K → 20K
35:14 | 11:20/mi
Half· 13.11 mi
2:23:09
Rank: #26647 (-6)
20K → Half
7:40 | 11:14/mi
25K· 15.53 mi
2:51:43
Rank: #26572 (+75)
Half → 25K
28:34 | 11:47/mi
30K· 18.64 mi
3:31:19
Rank: #26589 (-17)
25K → 30K
39:36 | 12:45/mi
20M
3:49:23
Rank: #26598 (-9)
30K → 20M
18:04 | 13:18/mi
21M
4:05:15
Rank: #26718 (-120)
20M → 21M
15:52 | 15:52/mi
35K· 21.75 mi
4:14:37
Rank: #26719 (-1)
21M → 35K
9:22 | 12:31/mi
23M
4:30:44
Rank: #26692 (+27)
35K → 23M
16:07 | 12:52/mi
24M
4:43:06
Rank: #26682 (+10)
23M → 24M
12:22 | 12:22/mi
40K· 24.85 mi
4:55:35
Rank: #26753 (-71)
24M → 40K
12:29 | 14:36/mi
25.2M
5:01:14
Rank: #26783 (-30)
40K → 25.2M
5:39 | 16:23/mi
Finish· 26.22 mi
5:14:01
Rank: #26807 (-24)
25.2M → Finish
12:47 | 12:33/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:23:09
Pace10:55 /mi
2nd Half
Distance13.11 mi
Time2:50:52
Pace13:02 /mi
📊Positive Split: 19.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:56:2132:3510:2932:35
10:29
-
10K
6.21 mi12:29:511:06:0510:3833:30
10:47
+0:18
15K
9.32 mi13:04:011:40:1510:4534:10
11:00
+0:13
20K
12.43 mi13:39:152:15:2910:5435:14
11:20
+0:20
Half
13.11 mi13:46:552:23:0910:557:40
11:14
-0:06
25K
15.53 mi14:15:292:51:4311:0328:34
11:47
+0:33
30K
18.64 mi14:55:053:31:1911:2039:36
12:45
+0:58
20M
20.00 mi15:13:093:49:2311:2818:04
13:18
+0:33
21M
21.00 mi15:29:014:05:1511:4115:52
15:52
+2:34
35K
21.75 mi15:38:234:14:3711:429:22
12:31
-3:21
23M
23.00 mi15:54:304:30:4411:4616:07
12:52
+0:21
24M
24.00 mi16:06:524:43:0611:4812:22
12:22
-0:30
40K
24.85 mi16:19:214:55:3511:5412:29
14:36
+2:14
25.2M
25.20 mi16:25:005:01:1411:575:39
16:23
+1:47
Finish
26.22 mi16:37:475:14:0111:5912:47
12:33
-3:50

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

10:29 /mi

Average Pace

11:59 /mi

Slowest Pace

16:23 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:23:09

46% of race

Time at Steady Pace

2:16:52

44% of race

Time at Slower Pace

34:00

11% of race

Average Pace: 11:59 /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 mi11:56:2132:3510:2932:35
10:29
#26718
10K
6.21 mi12:29:511:06:0510:3833:30
10:47
#26742
15K
9.32 mi13:04:011:40:1510:4534:10
11:00
#26712
20K
12.43 mi13:39:152:15:2910:5435:14
11:20
#26641
Half
13.11 mi13:46:552:23:0910:557:40
11:14
#26647
25K
15.53 mi14:15:292:51:4311:0328:34
11:47
#26572
30K
18.64 mi14:55:053:31:1911:2039:36
12:45
#26589
20M
20.00 mi15:13:093:49:2311:2818:04
13:18
#26598
21M
21.00 mi15:29:014:05:1511:4115:52
15:52
#26718
35K
21.75 mi15:38:234:14:3711:429:22
12:31
#26719
23M
23.00 mi15:54:304:30:4411:4616:07
12:52
#26692
24M
24.00 mi16:06:524:43:0611:4812:22
12:22
#26682
40K
24.85 mi16:19:214:55:3511:5412:29
14:36
#26753
25.2M
25.20 mi16:25:005:01:1411:575:39
16:23
#26783
Finish
26.22 mi16:37:475:14:0111:5912:47
12:33
#26807
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi26718111691116926668(Top 94%)11172(Top 91%)11172(Top 616%)
10K6.21 mi3.10 mi26742-2411191-2211191-2226750(Top 94%)11205(Top 92%)11205(Top 618%)
15K9.32 mi3.11 mi26712+3011175+1611175+1626668(Top 94%)11172(Top 91%)11172(Top 616%)
20K12.43 mi3.11 mi26641+7111144+3111144+3126437(Top 93%)11058(Top 90%)11058(Top 610%)
Half13.11 mi0.68 mi26647-611149-511149-526803(Top 94%)11301(Top 92%)11301(Top 623%)
25K15.53 mi2.42 mi26572+7511123+2611123+2626190(Top 92%)10968(Top 90%)10968(Top 605%)
30K18.64 mi3.11 mi26589-1711157-3411157-3426422(Top 93%)11184(Top 91%)11184(Top 617%)
20M20.00 mi1.36 mi26598-911169-1211169-1226712(Top 94%)11409(Top 93%)11409(Top 629%)
21M21.00 mi1.00 mi26718-12011250-8111250-8127750(Top 98%)11928(Top 98%)11928(Top 658%)
35K21.75 mi0.75 mi26719-111261-1111261-1126470(Top 93%)11317(Top 93%)11317(Top 624%)
23M23.00 mi1.25 mi26692+27112611126126230(Top 92%)11213(Top 92%)11213(Top 618%)
24M24.00 mi1.00 mi26682+1011259+211259+226137(Top 92%)11196(Top 92%)11196(Top 618%)
40K24.85 mi0.85 mi26753-7111306-4711306-4727565(Top 97%)11901(Top 97%)11901(Top 656%)
25.2M25.20 mi0.35 mi26783-3011325-1911325-1927855(Top 98%)12049(Top 99%)12049(Top 665%)
Finish26.22 mi1.02 mi26807-2411342-1711342-1727321(Top 96%)11782(Top 96%)11782(Top 650%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 94%
×21stories
+97ft-345ft

Overall

26668

Females

11172

F45-49

11172

5K→10K

3.1 - 6.2 mi

Top 94%
×5stories
+79ft-138ft

Overall

26750

Females

11205

F45-49

11205

10K→15K

6.2 - 9.3 mi

Top 94%
×3stories
+67ft-78ft

Overall

26668

Females

11172

F45-49

11172

15K→20K

9.3 - 12.4 mi

Top 93%
×5stories
+106ft-86ft

Overall

26437

Females

11058

F45-49

11058

20K→Half

12.4 - 13.1 mi

Top 94%
×2stories
+19ft-37ft

Overall

26803

Females

11301

F45-49

11301

Half→25K

13.1 - 15.5 mi

Top 92%
×4stories
+66ft-88ft

Overall

26190

Females

10968

F45-49

10968

25K→30K

15.5 - 18.6 mi

Top 93%
×9stories
+181ft-148ft

Overall

26422

Females

11184

F45-49

11184

30K→20M

18.6 - 20.0 mi

Top 94%
×5stories
+64ft-50ft

Overall

26712

Females

11409

F45-49

11409

20M→21M

20.0 - 21.0 mi

Top 98%
×8stories
+106ft-24ft

Overall

27750

Females

11928

F45-49

11928

21M→35K

21.0 - 21.8 mi

Top 93%
×7stories
+17ft-86ft

Overall

26470

Females

11317

F45-49

11317

35K→23M

21.8 - 23.0 mi

Top 92%
×5stories
+23ft-63ft

Overall

26230

Females

11213

F45-49

11213

23M→24M

23.0 - 24.0 mi

Top 92%
×6stories
+12ft-82ft

Overall

26137

Females

11196

F45-49

11196

24M→40K

24.0 - 24.9 mi

Top 97%
×1story
+6ft-20ft

Overall

27565

Females

11901

F45-49

11901

40K→25.2M

24.9 - 25.2 mi

Top 98%
×1story
+13ft-16ft

Overall

27855

Females

12049

F45-49

12049

25.2M→Finish

25.2 - 26.2 mi

Top 96%
×2stories
+22ft-21ft

Overall

27321

Females

11782

F45-49

11782

Passing Analysis

Category:
Athletes Passed
824
Passed By
913
Net Change
-89
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#26718
5K → 10K157181-24#26718#26742
10K → 15K132102+30#26742#26712
15K → 20K14271+71#26712#26641
20K → Half1925-6#26641#26647
Half → 25K12146+75#26647#26572
25K → 30K7693-17#26572#26589
30K → 20M4049-9#26589#26598
20M → 21M10130-120#26598#26718
21M → 35K2728-1#26718#26719
35K → 23M5427+27#26719#26692
23M → 24M2414+10#26692#26682
24M → 40K879-71#26682#26753
40K → 25.2M434-30#26753#26783
25.2M → Finish1034-24#26783#26807
TOTALS824913-89
📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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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