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BOSTON MARATHON 2025

Insuk Lee

Bib: 24345•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F55-59)
#0 / 994
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
29:22
Rank: #24089
Start → 5K
29:22 | 9:27/mi
10K· 6.21 mi
58:17
Rank: #23824 (+265)
5K → 10K
28:55 | 9:18/mi
15K· 9.32 mi
1:28:31
Rank: #24022 (-198)
10K → 15K
30:14 | 9:44/mi
20K· 12.43 mi
1:58:52
Rank: #23915 (+107)
15K → 20K
30:21 | 9:46/mi
Half· 13.11 mi
2:05:22
Rank: #23902 (+13)
20K → Half
6:30 | 9:32/mi
25K· 15.53 mi
2:30:56
Rank: #24018 (-116)
Half → 25K
25:34 | 10:33/mi
30K· 18.64 mi
3:04:56
Rank: #24027 (-9)
25K → 30K
34:00 | 10:57/mi
20M
3:19:30
Rank: #23939 (+88)
30K → 20M
14:34 | 10:43/mi
21M
3:31:41
Rank: #23937 (+2)
20M → 21M
12:11 | 12:11/mi
35K· 21.75 mi
3:39:13
Rank: #23864 (+73)
21M → 35K
7:32 | 10:04/mi
23M
3:52:10
Rank: #23736 (+128)
35K → 23M
12:57 | 10:21/mi
24M
4:01:58
Rank: #23616 (+120)
23M → 24M
9:48 | 9:48/mi
40K· 24.85 mi
4:10:54
Rank: #23556 (+60)
24M → 40K
8:56 | 10:27/mi
25.2M
4:14:58
Rank: #23546 (+10)
40K → 25.2M
4:04 | 11:48/mi
Finish· 26.22 mi
4:25:47
Rank: #23575 (-29)
25.2M → Finish
10:49 | 10:37/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:05:22
Pace9:34 /mi
2nd Half
Distance13.11 mi
Time2:20:25
Pace10:43 /mi
📊Positive Split: 12.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:27:4729:229:2729:22
9:27
-
10K
6.21 mi11:56:4258:179:2328:55
9:18
-0:09
15K
9.32 mi12:26:561:28:319:3030:14
9:44
+0:26
20K
12.43 mi12:57:171:58:529:3430:21
9:46
+0:02
Half
13.11 mi13:03:472:05:229:346:30
9:32
-0:14
25K
15.53 mi13:29:212:30:569:4325:34
10:33
+1:01
30K
18.64 mi14:03:213:04:569:5534:00
10:57
+0:24
20M
20.00 mi14:17:553:19:309:5814:34
10:43
-0:14
21M
21.00 mi14:30:063:31:4110:0512:11
12:11
+1:28
35K
21.75 mi14:37:383:39:1310:057:32
10:04
-2:07
23M
23.00 mi14:50:353:52:1010:0612:57
10:21
+0:17
24M
24.00 mi15:00:234:01:5810:059:48
9:48
-0:33
40K
24.85 mi15:09:194:10:5410:068:56
10:27
+0:39
25.2M
25.20 mi15:13:234:14:5810:074:04
11:48
+1:21
Finish
26.22 mi15:24:124:25:4710:0910:49
10:37
-1:11

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

9:18 /mi

Average Pace

10:09 /mi

Slowest Pace

12:11 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:15:10

51% of race

Time at Steady Pace

1:20:22

30% of race

Time at Slower Pace

50:15

19% of race

Average Pace: 10:08 /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 mi11:27:4729:229:2729:22
9:27
#24089
10K
6.21 mi11:56:4258:179:2328:55
9:18
#23824
15K
9.32 mi12:26:561:28:319:3030:14
9:44
#24022
20K
12.43 mi12:57:171:58:529:3430:21
9:46
#23915
Half
13.11 mi13:03:472:05:229:346:30
9:32
#23902
25K
15.53 mi13:29:212:30:569:4325:34
10:33
#24018
30K
18.64 mi14:03:213:04:569:5534:00
10:57
#24027
20M
20.00 mi14:17:553:19:309:5814:34
10:43
#23939
21M
21.00 mi14:30:063:31:4110:0512:11
12:11
#23937
35K
21.75 mi14:37:383:39:1310:057:32
10:04
#23864
23M
23.00 mi14:50:353:52:1010:0612:57
10:21
#23736
24M
24.00 mi15:00:234:01:5810:059:48
9:48
#23616
40K
24.85 mi15:09:194:10:5410:068:56
10:27
#23556
25.2M
25.20 mi15:13:234:14:5810:074:04
11:48
#23546
Finish
26.22 mi15:24:124:25:4710:0910:49
10:37
#23575
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi3.11 mi240899743974324369(Top 86%)9883(Top 81%)9883(Top 994%)
10K6.21 mi3.10 mi23824+2659587+1569587+15623565(Top 83%)9443(Top 77%)9443(Top 950%)
15K9.32 mi3.11 mi24022-1989691-1049691-10424369(Top 86%)9883(Top 81%)9883(Top 994%)
20K12.43 mi3.11 mi23915+1079645+469645+4623689(Top 83%)9540(Top 78%)9540(Top 960%)
Half13.11 mi0.68 mi23902+139643+29643+223658(Top 83%)9519(Top 78%)9519(Top 958%)
25K15.53 mi2.42 mi24018-1169713-709713-7024457(Top 86%)9991(Top 82%)9991(Top 1005%)
30K18.64 mi3.11 mi24027-99743-309743-3023912(Top 84%)9824(Top 80%)9824(Top 988%)
20M20.00 mi1.36 mi23939+889715+289715+2823008(Top 81%)9427(Top 77%)9427(Top 948%)
21M21.00 mi1.00 mi23937+29729-149729-1423914(Top 84%)9986(Top 82%)9986(Top 1005%)
35K21.75 mi0.75 mi23864+739707+229707+2222121(Top 78%)9100(Top 74%)9100(Top 915%)
23M23.00 mi1.25 mi23736+1289654+539654+5321575(Top 76%)8865(Top 72%)8865(Top 892%)
24M24.00 mi1.00 mi23616+1209607+479607+4720751(Top 73%)8482(Top 69%)8482(Top 853%)
40K24.85 mi0.85 mi23556+609594+139594+1321801(Top 77%)9098(Top 74%)9098(Top 915%)
25.2M25.20 mi0.35 mi23546+109597-39597-322805(Top 80%)9573(Top 78%)9573(Top 963%)
Finish26.22 mi1.02 mi23575-299627-309627-3024549(Top 86%)10428(Top 85%)10428(Top 1049%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 86%
×21stories
+97ft-345ft

Overall

24369

Females

9883

F55-59

9883

5K→10K

3.1 - 6.2 mi

Top 83%
×5stories
+79ft-138ft

Overall

23565

Females

9443

F55-59

9443

10K→15K

6.2 - 9.3 mi

Top 86%
×3stories
+67ft-78ft

Overall

24369

Females

9883

F55-59

9883

15K→20K

9.3 - 12.4 mi

Top 83%
×5stories
+106ft-86ft

Overall

23689

Females

9540

F55-59

9540

20K→Half

12.4 - 13.1 mi

Top 83%
×2stories
+19ft-37ft

Overall

23658

Females

9519

F55-59

9519

Half→25K

13.1 - 15.5 mi

Top 86%
×4stories
+66ft-88ft

Overall

24457

Females

9991

F55-59

9991

25K→30K

15.5 - 18.6 mi

Top 84%
×9stories
+181ft-148ft

Overall

23912

Females

9824

F55-59

9824

30K→20M

18.6 - 20.0 mi

Top 81%
×5stories
+64ft-50ft

Overall

23008

Females

9427

F55-59

9427

20M→21M

20.0 - 21.0 mi

Top 84%
×8stories
+106ft-24ft

Overall

23914

Females

9986

F55-59

9986

21M→35K

21.0 - 21.8 mi

Top 78%
×7stories
+17ft-86ft

Overall

22121

Females

9100

F55-59

9100

35K→23M

21.8 - 23.0 mi

Top 76%
×5stories
+23ft-63ft

Overall

21575

Females

8865

F55-59

8865

23M→24M

23.0 - 24.0 mi

Top 73%
×6stories
+12ft-82ft

Overall

20751

Females

8482

F55-59

8482

24M→40K

24.0 - 24.9 mi

Top 77%
×1story
+6ft-20ft

Overall

21801

Females

9098

F55-59

9098

40K→25.2M

24.9 - 25.2 mi

Top 80%
×1story
+13ft-16ft

Overall

22805

Females

9573

F55-59

9573

25.2M→Finish

25.2 - 26.2 mi

Top 86%
×2stories
+22ft-21ft

Overall

24549

Females

10428

F55-59

10428

Passing Analysis

Category:
Athletes Passed
1609
Passed By
1095
Net Change
+514
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24089
5K → 10K396131+265#24089#23824
10K → 15K83281-198#23824#24022
15K → 20K19487+107#24022#23915
20K → Half2411+13#23915#23902
Half → 25K83199-116#23902#24018
25K → 30K150159-9#24018#24027
30K → 20M12234+88#24027#23939
20M → 21M6159+2#23939#23937
21M → 35K8512+73#23937#23864
35K → 23M14214+128#23864#23736
23M → 24M1244+120#23736#23616
24M → 40K7818+60#23616#23556
40K → 25.2M3020+10#23556#23546
25.2M → Finish3766-29#23546#23575
TOTALS16091095+514
📊

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