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BOSTON MARATHON 2025

Jinwoo Lee

Bib: 20305•M

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
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:57
Rank: #19032
Start → 5K
8:21/mi
25:57 split
10K· 6.21 mi
52:12
Rank: #19238 (-206)
5K → 10K
8:27/mi
26:15 split
15K· 9.32 mi
1:18:38
Rank: #19264 (-26)
10K → 15K
8:30/mi
26:26 split
20K· 12.43 mi
1:46:18
Rank: #19612 (-348)
15K → 20K
8:54/mi
27:40 split
Half· 13.11 mi
1:52:47
Rank: #19883 (-271)
20K → Half
9:30/mi
6:29 split
25K· 15.53 mi
2:14:53
Rank: #19954 (-71)
Half → 25K
9:07/mi
22:06 split
30K· 18.64 mi
2:46:13
Rank: #20458 (-504)
25K → 30K
10:05/mi
31:20 split
20M
2:59:53
Rank: #20524 (-66)
30K → 20M
10:03/mi
13:40 split
21M
3:10:06
Rank: #20442 (+82)
20M → 21M
10:13/mi
10:13 split
35K· 21.75 mi
3:18:22
Rank: #20663 (-221)
21M → 35K
11:03/mi
8:16 split
23M
3:29:56
Rank: #20499 (+164)
35K → 23M
9:14/mi
11:34 split
24M
3:39:32
Rank: #20498 (+1)
23M → 24M
9:36/mi
9:36 split
40K· 24.85 mi
3:48:56
Rank: #20664 (-166)
24M → 40K
11:00/mi
9:24 split
25.2M
3:53:42
Rank: #20802 (-138)
40K → 25.2M
13:49/mi
4:46 split
Finish· 26.22 mi
4:04:05
Rank: #20902 (-100)
25.2M → Finish
10:11/mi
10:23 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:52:47
Pace8:36 /mi
2nd Half
Distance13.11 mi
Time2:11:18
Pace10:01 /mi
📊Positive Split: 16.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:1325:578:2125:57
8:21
-
10K
6.21 mi11:46:2852:128:2426:15
8:27
+0:06
15K
9.32 mi12:12:541:18:388:2626:26
8:30
+0:03
20K
12.43 mi12:40:341:46:188:3327:40
8:54
+0:24
Half
13.11 mi12:47:031:52:478:366:29
9:30
+0:36
25K
15.53 mi13:09:092:14:538:4122:06
9:07
-0:23
30K
18.64 mi13:40:292:46:138:5531:20
10:05
+0:58
20M
20.00 mi13:54:092:59:539:0013:40
10:03
-0:02
21M
21.00 mi14:04:223:10:069:0310:13
10:13
+0:10
35K
21.75 mi14:12:383:18:229:078:16
11:03
+0:50
23M
23.00 mi14:24:123:29:569:0811:34
9:14
-1:49
24M
24.00 mi14:33:483:39:329:099:36
9:36
+0:22
40K
24.85 mi14:43:123:48:569:139:24
11:00
+1:24
25.2M
25.20 mi14:47:583:53:429:164:46
13:49
+2:49
Finish
26.22 mi14:58:214:04:059:1910:23
10:11
-3:38

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

8:21 /mi

Average Pace

9:19 /mi

Slowest Pace

13:49 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:46:18

44% of race

Time at Steady Pace

1:55:21

47% of race

Time at Slower Pace

22:26

9% of race

Average Pace: 9:19 /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 mi11:20:1325:578:2125:57
8:21
#19032
10K
6.21 mi11:46:2852:128:2426:15
8:27
#19238
15K
9.32 mi12:12:541:18:388:2626:26
8:30
#19264
20K
12.43 mi12:40:341:46:188:3327:40
8:54
#19612
Half
13.11 mi12:47:031:52:478:366:29
9:30
#19883
25K
15.53 mi13:09:092:14:538:4122:06
9:07
#19954
30K
18.64 mi13:40:292:46:138:5531:20
10:05
#20458
20M
20.00 mi13:54:092:59:539:0013:40
10:03
#20524
21M
21.00 mi14:04:223:10:069:0310:13
10:13
#20442
35K
21.75 mi14:12:383:18:229:078:16
11:03
#20663
23M
23.00 mi14:24:123:29:569:0811:34
9:14
#20499
24M
24.00 mi14:33:483:39:329:099:36
9:36
#20498
40K
24.85 mi14:43:123:48:569:139:24
11:00
#20664
25.2M
25.20 mi14:47:583:53:429:164:46
13:49
#20802
Finish
26.22 mi14:58:214:04:059:1910:23
10:11
#20902
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi19032120501205019374(Top 68%)12216(Top 76%)12216(Top 970%)
10K6.21 mi3.10 mi19238-20612152-10212152-10219501(Top 69%)12272(Top 76%)12272(Top 975%)
15K9.32 mi3.11 mi19264-2612167-1512167-1519374(Top 68%)12216(Top 76%)12216(Top 970%)
20K12.43 mi3.11 mi19612-34812305-13812305-13820496(Top 72%)12673(Top 79%)12673(Top 1007%)
Half13.11 mi0.68 mi19883-27112421-11612421-11623551(Top 83%)14028(Top 87%)14028(Top 1114%)
25K15.53 mi2.42 mi19954-7112440-1912440-1920413(Top 72%)12595(Top 78%)12595(Top 1000%)
30K18.64 mi3.11 mi20458-50412605-16512605-16521839(Top 77%)13088(Top 81%)13088(Top 1040%)
20M20.00 mi1.36 mi20524-6612626-2112626-2121136(Top 74%)12648(Top 79%)12648(Top 1005%)
21M21.00 mi1.00 mi20442+8212565+6112565+6119076(Top 67%)11661(Top 72%)11661(Top 926%)
35K21.75 mi0.75 mi20663-22112653-8812653-8824303(Top 86%)14016(Top 87%)14016(Top 1113%)
23M23.00 mi1.25 mi20499+16412560+9312560+9317501(Top 62%)10736(Top 67%)10736(Top 853%)
24M24.00 mi1.00 mi20498+112542+1812542+1819981(Top 70%)11864(Top 74%)11864(Top 942%)
40K24.85 mi0.85 mi20664-16612599-5712599-5723122(Top 81%)13294(Top 83%)13294(Top 1056%)
25.2M25.20 mi0.35 mi20802-13812645-4612645-4626063(Top 92%)14776(Top 92%)14776(Top 1174%)
Finish26.22 mi1.02 mi20902-10012673-2812673-2823482(Top 83%)13501(Top 84%)13501(Top 1072%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 68%
×21story building
+97ft-345ft

Overall

19374

Males

12216

M60-64

12216

5K→10K

3.1 - 6.2 mi

Top 69%
×5story building
+79ft-138ft

Overall

19501

Males

12272

M60-64

12272

10K→15K

6.2 - 9.3 mi

Top 68%
×3story building
+67ft-78ft

Overall

19374

Males

12216

M60-64

12216

15K→20K

9.3 - 12.4 mi

Top 72%
×5story building
+106ft-86ft

Overall

20496

Males

12673

M60-64

12673

20K→Half

12.4 - 13.1 mi

Top 83%
×2story building
+19ft-37ft

Overall

23551

Males

14028

M60-64

14028

Half→25K

13.1 - 15.5 mi

Top 72%
×4story building
+66ft-88ft

Overall

20413

Males

12595

M60-64

12595

25K→30K

15.5 - 18.6 mi

Top 77%
×9story building
+181ft-148ft

Overall

21839

Males

13088

M60-64

13088

30K→20M

18.6 - 20.0 mi

Top 74%
×5story building
+64ft-50ft

Overall

21136

Males

12648

M60-64

12648

20M→21M

20.0 - 21.0 mi

Top 67%
×8story building
+106ft-24ft

Overall

19076

Males

11661

M60-64

11661

21M→35K

21.0 - 21.8 mi

Top 86%
×7story building
+17ft-86ft

Overall

24303

Males

14016

M60-64

14016

35K→23M

21.8 - 23.0 mi

Top 62%
×5story building
+23ft-63ft

Overall

17501

Males

10736

M60-64

10736

23M→24M

23.0 - 24.0 mi

Top 70%
×6story building
+12ft-82ft

Overall

19981

Males

11864

M60-64

11864

24M→40K

24.0 - 24.9 mi

Top 81%
×1story
+6ft-20ft

Overall

23122

Males

13294

M60-64

13294

40K→25.2M

24.9 - 25.2 mi

Top 92%
×1story
+13ft-16ft

Overall

26063

Males

14776

M60-64

14776

25.2M→Finish

25.2 - 26.2 mi

Top 83%
×2story building
+22ft-21ft

Overall

23482

Males

13501

M60-64

13501

Passing Analysis

Category:
Athletes Passed
1191
Passed By
3061
Net Change
-1870
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19032
5K → 10K165371-206#19032#19238
10K → 15K191217-26#19238#19264
15K → 20K98446-348#19264#19612
20K → Half1272-271#19612#19883
Half → 25K144215-71#19883#19954
25K → 30K106610-504#19954#20458
30K → 20M80146-66#20458#20524
20M → 21M12442+82#20524#20442
21M → 35K16237-221#20442#20663
35K → 23M17511+164#20663#20499
23M → 24M5655+1#20499#20498
24M → 40K18184-166#20498#20664
40K → 25.2M4142-138#20664#20802
25.2M → Finish13113-100#20802#20902
TOTALS11913061-1870
📊

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