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BOSTON MARATHON 2025

Hae Koo Lee

Bib: 21679•M

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M60-64)
#0 / 1259
Top 29%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:06
Rank: #19304
Start → 5K
26:06 | 8:24/mi
10K· 6.21 mi
50:50
Rank: #17838 (+1466)
5K → 10K
24:44 | 7:58/mi
15K· 9.32 mi
1:15:11
Rank: #16818 (+1020)
10K → 15K
24:21 | 7:50/mi
20K· 12.43 mi
1:39:59
Rank: #16283 (+535)
15K → 20K
24:48 | 7:59/mi
Half· 13.11 mi
1:45:26
Rank: #16244 (+39)
20K → Half
5:27 | 7:59/mi
25K· 15.53 mi
2:05:47
Rank: #16303 (-59)
Half → 25K
20:21 | 8:24/mi
30K· 18.64 mi
2:33:42
Rank: #16490 (-187)
25K → 30K
27:55 | 8:59/mi
20M
2:45:54
Rank: #16473 (+17)
30K → 20M
12:12 | 8:59/mi
21M
2:55:24
Rank: #16396 (+77)
20M → 21M
9:30 | 9:30/mi
35K· 21.75 mi
3:01:45
Rank: #16329 (+67)
21M → 35K
6:21 | 8:29/mi
23M
3:12:24
Rank: #16107 (+222)
35K → 23M
10:39 | 8:30/mi
24M
3:20:38
Rank: #15965 (+142)
23M → 24M
8:14 | 8:14/mi
40K· 24.85 mi
3:27:50
Rank: #15826 (+139)
24M → 40K
7:12 | 8:25/mi
25.2M
3:30:49
Rank: #15714 (+112)
40K → 25.2M
2:59 | 8:39/mi
Finish· 26.22 mi
3:38:34
Rank: #15506 (+208)
25.2M → Finish
7:45 | 7:36/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:45:26
Pace8:03 /mi
2nd Half
Distance13.11 mi
Time1:53:08
Pace8:38 /mi
📊Positive Split: 7.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:2226:068:2426:06
8:24
-
10K
6.21 mi11:45:0650:508:1124:44
7:58
-0:26
15K
9.32 mi12:09:271:15:118:0424:21
7:50
-0:08
20K
12.43 mi12:34:151:39:598:0324:48
7:59
+0:09
Half
13.11 mi12:39:421:45:268:035:27
7:59
0:00
25K
15.53 mi13:00:032:05:478:0620:21
8:24
+0:25
30K
18.64 mi13:27:582:33:428:1527:55
8:59
+0:35
20M
20.00 mi13:40:102:45:548:1812:12
8:59
0:00
21M
21.00 mi13:49:402:55:248:219:30
9:30
+0:31
35K
21.75 mi13:56:013:01:458:216:21
8:29
-1:01
23M
23.00 mi14:06:403:12:248:2210:39
8:30
+0:01
24M
24.00 mi14:14:543:20:388:228:14
8:14
-0:16
40K
24.85 mi14:22:063:27:508:227:12
8:25
+0:11
25.2M
25.20 mi14:25:053:30:498:222:59
8:39
+0:14
Finish
26.22 mi14:32:503:38:348:217:45
7:36
-1:03

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

7:36 /mi

Average Pace

8:21 /mi

Slowest Pace

9:30 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:27:05

40% of race

Time at Steady Pace

1:18:53

36% of race

Time at Slower Pace

52:36

24% of race

Average Pace: 8:20 /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 mi11:20:2226:068:2426:06
8:24
#19304
10K
6.21 mi11:45:0650:508:1124:44
7:58
#17838
15K
9.32 mi12:09:271:15:118:0424:21
7:50
#16818
20K
12.43 mi12:34:151:39:598:0324:48
7:59
#16283
Half
13.11 mi12:39:421:45:268:035:27
7:59
#16244
25K
15.53 mi13:00:032:05:478:0620:21
8:24
#16303
30K
18.64 mi13:27:582:33:428:1527:55
8:59
#16490
20M
20.00 mi13:40:102:45:548:1812:12
8:59
#16473
21M
21.00 mi13:49:402:55:248:219:30
9:30
#16396
35K
21.75 mi13:56:013:01:458:216:21
8:29
#16329
23M
23.00 mi14:06:403:12:248:2210:39
8:30
#16107
24M
24.00 mi14:14:543:20:388:228:14
8:14
#15965
40K
24.85 mi14:22:063:27:508:227:12
8:25
#15826
25.2M
25.20 mi14:25:053:30:498:222:59
8:39
#15714
Finish
26.22 mi14:32:503:38:348:217:45
7:36
#15506
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi19304121611216114690(Top 52%)10237(Top 64%)10237(Top 813%)
10K6.21 mi3.10 mi17838+146611552+60911552+60916146(Top 57%)10888(Top 68%)10888(Top 865%)
15K9.32 mi3.11 mi16818+102011148+40411148+40414690(Top 52%)10237(Top 64%)10237(Top 813%)
20K12.43 mi3.11 mi16283+53510919+22910919+22914786(Top 52%)10223(Top 63%)10223(Top 812%)
Half13.11 mi0.68 mi16244+3910893+2610893+2615760(Top 55%)10678(Top 66%)10678(Top 848%)
25K15.53 mi2.42 mi16303-5910911-1810911-1816513(Top 58%)10876(Top 68%)10876(Top 864%)
30K18.64 mi3.11 mi16490-18710920-910920-917603(Top 62%)11193(Top 70%)11193(Top 889%)
20M20.00 mi1.36 mi16473+1710886+3410886+3416657(Top 59%)10658(Top 66%)10658(Top 847%)
21M21.00 mi1.00 mi16396+7710824+6210824+6216054(Top 57%)10278(Top 64%)10278(Top 816%)
35K21.75 mi0.75 mi16329+6710783+4110783+4115362(Top 54%)9878(Top 61%)9878(Top 785%)
23M23.00 mi1.25 mi16107+22210646+13710646+13713340(Top 47%)8857(Top 55%)8857(Top 703%)
24M24.00 mi1.00 mi15965+14210562+8410562+8412796(Top 45%)8559(Top 53%)8559(Top 680%)
40K24.85 mi0.85 mi15826+13910479+8310479+8312918(Top 45%)8497(Top 53%)8497(Top 675%)
25.2M25.20 mi0.35 mi15714+11210414+6510414+659720(Top 34%)6839(Top 42%)6839(Top 543%)
Finish26.22 mi1.02 mi15506+20810309+10510309+1059976(Top 35%)6985(Top 43%)6985(Top 555%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 52%
×21stories
+97ft-345ft

Overall

14690

Males

10237

M60-64

10237

5K→10K

3.1 - 6.2 mi

Top 57%
×5stories
+79ft-138ft

Overall

16146

Males

10888

M60-64

10888

10K→15K

6.2 - 9.3 mi

Top 52%
×3stories
+67ft-78ft

Overall

14690

Males

10237

M60-64

10237

15K→20K

9.3 - 12.4 mi

Top 52%
×5stories
+106ft-86ft

Overall

14786

Males

10223

M60-64

10223

20K→Half

12.4 - 13.1 mi

Top 55%
×2stories
+19ft-37ft

Overall

15760

Males

10678

M60-64

10678

Half→25K

13.1 - 15.5 mi

Top 58%
×4stories
+66ft-88ft

Overall

16513

Males

10876

M60-64

10876

25K→30K

15.5 - 18.6 mi

Top 62%
×9stories
+181ft-148ft

Overall

17603

Males

11193

M60-64

11193

30K→20M

18.6 - 20.0 mi

Top 59%
×5stories
+64ft-50ft

Overall

16657

Males

10658

M60-64

10658

20M→21M

20.0 - 21.0 mi

Top 57%
×8stories
+106ft-24ft

Overall

16054

Males

10278

M60-64

10278

21M→35K

21.0 - 21.8 mi

Top 54%
×7stories
+17ft-86ft

Overall

15362

Males

9878

M60-64

9878

35K→23M

21.8 - 23.0 mi

Top 47%
×5stories
+23ft-63ft

Overall

13340

Males

8857

M60-64

8857

23M→24M

23.0 - 24.0 mi

Top 45%
×6stories
+12ft-82ft

Overall

12796

Males

8559

M60-64

8559

24M→40K

24.0 - 24.9 mi

Top 45%
×1story
+6ft-20ft

Overall

12918

Males

8497

M60-64

8497

40K→25.2M

24.9 - 25.2 mi

Top 34%
×1story
+13ft-16ft

Overall

9720

Males

6839

M60-64

6839

25.2M→Finish

25.2 - 26.2 mi

Top 35%
×2stories
+22ft-21ft

Overall

9976

Males

6985

M60-64

6985

Passing Analysis

Category:
Athletes Passed
4652
Passed By
854
Net Change
+3798
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19304
5K → 10K148014+1466#19304#17838
10K → 15K10244+1020#17838#16818
15K → 20K55924+535#16818#16283
20K → Half5415+39#16283#16244
Half → 25K139198-59#16244#16303
25K → 30K176363-187#16303#16490
30K → 20M120103+17#16490#16473
20M → 21M14770+77#16473#16396
21M → 35K9326+67#16396#16329
35K → 23M23311+222#16329#16107
23M → 24M15513+142#16107#15965
24M → 40K15011+139#15965#15826
40K → 25.2M1120+112#15826#15714
25.2M → Finish2102+208#15714#15506
TOTALS4652854+3798
📊

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