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BOSTON MARATHON 2025

Juhyun Kim

Bib: 14933•F

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Division (F18-39)
#0 / 5469
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:26
Rank: #18032
Start → 5K
25:26 | 8:11/mi
10K· 6.21 mi
51:13
Rank: #18257 (-225)
5K → 10K
25:47 | 8:18/mi
15K· 9.32 mi
1:17:21
Rank: #18394 (-137)
10K → 15K
26:08 | 8:25/mi
20K· 12.43 mi
1:45:35
Rank: #19239 (-845)
15K → 20K
28:14 | 9:05/mi
Half· 13.11 mi
1:50:41
Rank: #18914 (+325)
20K → Half
5:06 | 7:29/mi
25K· 15.53 mi
2:11:12
Rank: #18566 (+348)
Half → 25K
20:31 | 8:28/mi
30K· 18.64 mi
2:39:54
Rank: #18626 (-60)
25K → 30K
28:42 | 9:14/mi
20M
2:53:34
Rank: #18898 (-272)
30K → 20M
13:40 | 10:03/mi
21M
3:03:38
Rank: #18870 (+28)
20M → 21M
10:04 | 10:04/mi
35K· 21.75 mi
3:13:26
Rank: #19612 (-742)
21M → 35K
9:48 | 13:06/mi
23M
3:25:49
Rank: #19647 (-35)
35K → 23M
12:23 | 9:53/mi
24M
3:35:29
Rank: #19686 (-39)
23M → 24M
9:40 | 9:40/mi
40K· 24.85 mi
3:43:28
Rank: #19638 (+48)
24M → 40K
7:59 | 9:20/mi
25.2M
3:46:56
Rank: #19591 (+47)
40K → 25.2M
3:28 | 10:03/mi
Finish· 26.22 mi
3:56:15
Rank: #19604 (-13)
25.2M → Finish
9:19 | 9:09/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:50:41
Pace8:27 /mi
2nd Half
Distance13.11 mi
Time2:05:34
Pace9:35 /mi
📊Positive Split: 13.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:57:4725:268:1125:26
8:11
-
10K
6.21 mi11:23:3451:138:1525:47
8:18
+0:07
15K
9.32 mi11:49:421:17:218:1826:08
8:25
+0:07
20K
12.43 mi12:17:561:45:358:3028:14
9:05
+0:40
Half
13.11 mi12:23:021:50:418:275:06
7:29
-1:36
25K
15.53 mi12:43:332:11:128:2720:31
8:28
+0:59
30K
18.64 mi13:12:152:39:548:3528:42
9:14
+0:46
20M
20.00 mi13:25:552:53:348:4113:40
10:03
+0:49
21M
21.00 mi13:35:593:03:388:4510:04
10:04
+0:01
35K
21.75 mi13:45:473:13:268:549:48
13:06
+3:02
23M
23.00 mi13:58:103:25:498:5712:23
9:53
-3:13
24M
24.00 mi14:07:503:35:298:599:40
9:40
-0:13
40K
24.85 mi14:15:493:43:288:597:59
9:20
-0:20
25.2M
25.20 mi14:19:173:46:569:003:28
10:03
+0:43
Finish
26.22 mi14:28:363:56:159:019:19
9:09
-0:54

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

7:29 /mi

Average Pace

9:01 /mi

Slowest Pace

13:06 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:42:58

44% of race

Time at Steady Pace

1:23:54

36% of race

Time at Slower Pace

49:23

21% of race

Average Pace: 9:01 /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 mi10:57:4725:268:1125:26
8:11
#18032
10K
6.21 mi11:23:3451:138:1525:47
8:18
#18257
15K
9.32 mi11:49:421:17:218:1826:08
8:25
#18394
20K
12.43 mi12:17:561:45:358:3028:14
9:05
#19239
Half
13.11 mi12:23:021:50:418:275:06
7:29
#18914
25K
15.53 mi12:43:332:11:128:2720:31
8:28
#18566
30K
18.64 mi13:12:152:39:548:3528:42
9:14
#18626
20M
20.00 mi13:25:552:53:348:4113:40
10:03
#18898
21M
21.00 mi13:35:593:03:388:4510:04
10:04
#18870
35K
21.75 mi13:45:473:13:268:549:48
13:06
#19612
23M
23.00 mi13:58:103:25:498:5712:23
9:53
#19647
24M
24.00 mi14:07:503:35:298:599:40
9:40
#19686
40K
24.85 mi14:15:493:43:288:597:59
9:20
#19638
25.2M
25.20 mi14:19:173:46:569:003:28
10:03
#19591
Finish
26.22 mi14:28:363:56:159:019:19
9:09
#19604
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi180326365636518792(Top 66%)6782(Top 55%)6782(Top 124%)
10K6.21 mi3.10 mi18257-2256482-1176482-11718566(Top 65%)6635(Top 54%)6635(Top 121%)
15K9.32 mi3.11 mi18394-1376564-826564-8218792(Top 66%)6782(Top 55%)6782(Top 124%)
20K12.43 mi3.11 mi19239-8457042-4787042-47821390(Top 75%)8254(Top 68%)8254(Top 151%)
Half13.11 mi0.68 mi18914+3256855+1876855+18711595(Top 41%)2754(Top 23%)2754(Top 50%)
25K15.53 mi2.42 mi18566+3486679+1766679+17616967(Top 60%)5839(Top 48%)5839(Top 107%)
30K18.64 mi3.11 mi18626-606733-546733-5418840(Top 66%)7035(Top 58%)7035(Top 129%)
20M20.00 mi1.36 mi18898-2726917-1846917-18421147(Top 74%)8437(Top 69%)8437(Top 154%)
21M21.00 mi1.00 mi18870+286932-156932-1518574(Top 65%)7099(Top 58%)7099(Top 130%)
35K21.75 mi0.75 mi19612-7427369-4377369-43727058(Top 95%)11620(Top 95%)11620(Top 212%)
23M23.00 mi1.25 mi19647-357424-557424-5520129(Top 71%)8119(Top 66%)8119(Top 148%)
24M24.00 mi1.00 mi19686-397471-477471-4720281(Top 71%)8228(Top 67%)8228(Top 150%)
40K24.85 mi0.85 mi19638+487462+97462+918044(Top 64%)7148(Top 58%)7148(Top 131%)
25.2M25.20 mi0.35 mi19591+477450+127450+1217330(Top 61%)6780(Top 55%)6780(Top 124%)
Finish26.22 mi1.02 mi19604-137470-207470-2019720(Top 69%)7990(Top 65%)7990(Top 146%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 66%
×21stories
+97ft-345ft

Overall

18792

Females

6782

F18-39

6782

5K→10K

3.1 - 6.2 mi

Top 65%
×5stories
+79ft-138ft

Overall

18566

Females

6635

F18-39

6635

10K→15K

6.2 - 9.3 mi

Top 66%
×3stories
+67ft-78ft

Overall

18792

Females

6782

F18-39

6782

15K→20K

9.3 - 12.4 mi

Top 75%
×5stories
+106ft-86ft

Overall

21390

Females

8254

F18-39

8254

20K→Half

12.4 - 13.1 mi

Top 41%
×2stories
+19ft-37ft

Overall

11595

Females

2754

F18-39

2754

Half→25K

13.1 - 15.5 mi

Top 60%
×4stories
+66ft-88ft

Overall

16967

Females

5839

F18-39

5839

25K→30K

15.5 - 18.6 mi

Top 66%
×9stories
+181ft-148ft

Overall

18840

Females

7035

F18-39

7035

30K→20M

18.6 - 20.0 mi

Top 74%
×5stories
+64ft-50ft

Overall

21147

Females

8437

F18-39

8437

20M→21M

20.0 - 21.0 mi

Top 65%
×8stories
+106ft-24ft

Overall

18574

Females

7099

F18-39

7099

21M→35K

21.0 - 21.8 mi

Top 95%
×7stories
+17ft-86ft

Overall

27058

Females

11620

F18-39

11620

35K→23M

21.8 - 23.0 mi

Top 71%
×5stories
+23ft-63ft

Overall

20129

Females

8119

F18-39

8119

23M→24M

23.0 - 24.0 mi

Top 71%
×6stories
+12ft-82ft

Overall

20281

Females

8228

F18-39

8228

24M→40K

24.0 - 24.9 mi

Top 64%
×1story
+6ft-20ft

Overall

18044

Females

7148

F18-39

7148

40K→25.2M

24.9 - 25.2 mi

Top 61%
×1story
+13ft-16ft

Overall

17330

Females

6780

F18-39

6780

25.2M→Finish

25.2 - 26.2 mi

Top 69%
×2stories
+22ft-21ft

Overall

19720

Females

7990

F18-39

7990

Passing Analysis

Category:
Athletes Passed
1787
Passed By
3359
Net Change
-1572
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18032
5K → 10K198423-225#18032#18257
10K → 15K138275-137#18257#18394
15K → 20K48893-845#18394#19239
20K → Half3250+325#19239#18914
Half → 25K36113+348#18914#18566
25K → 30K228288-60#18566#18626
30K → 20M43315-272#18626#18898
20M → 21M11991+28#18898#18870
21M → 35K4746-742#18870#19612
35K → 23M75110-35#19612#19647
23M → 24M5493-39#19647#19686
24M → 40K8335+48#19686#19638
40K → 25.2M5710+47#19638#19591
25.2M → Finish5467-13#19591#19604
TOTALS17873359-1572
📊

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