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BOSTON MARATHON 2025

Gyesook Lee

Bib: 18762•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Top 43%
Division (F55-59)
#0 / 994
Top 22%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:25
Rank: #15352
Start → 5K
24:25 | 7:52/mi
10K· 6.21 mi
49:44
Rank: #16556 (-1204)
5K → 10K
25:19 | 8:09/mi
15K· 9.32 mi
1:15:46
Rank: #17286 (-730)
10K → 15K
26:02 | 8:23/mi
20K· 12.43 mi
1:42:46
Rank: #17815 (-529)
15K → 20K
27:00 | 8:41/mi
Half· 13.11 mi
1:48:34
Rank: #17869 (-54)
20K → Half
5:48 | 8:30/mi
25K· 15.53 mi
2:09:37
Rank: #17891 (-22)
Half → 25K
21:03 | 8:41/mi
30K· 18.64 mi
2:38:21
Rank: #18072 (-181)
25K → 30K
28:44 | 9:15/mi
20M
2:51:11
Rank: #18150 (-78)
30K → 20M
12:50 | 9:27/mi
21M
3:01:06
Rank: #18163 (-13)
20M → 21M
9:55 | 9:55/mi
35K· 21.75 mi
3:07:44
Rank: #18124 (+39)
21M → 35K
6:38 | 8:52/mi
23M
3:19:24
Rank: #18101 (+23)
35K → 23M
11:40 | 9:19/mi
24M
3:28:16
Rank: #18008 (+93)
23M → 24M
8:52 | 8:52/mi
40K· 24.85 mi
3:35:47
Rank: #17899 (+109)
24M → 40K
7:31 | 8:47/mi
25.2M
3:39:03
Rank: #17846 (+53)
40K → 25.2M
3:16 | 9:28/mi
Finish· 26.22 mi
3:47:50
Rank: #17799 (+47)
25.2M → Finish
8:47 | 8:37/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:48:34
Pace8:17 /mi
2nd Half
Distance13.11 mi
Time1:59:16
Pace9:06 /mi
📊Positive Split: 9.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:21:3624:257:5224:25
7:52
-
10K
6.21 mi11:46:5549:448:0025:19
8:09
+0:17
15K
9.32 mi12:12:571:15:468:0826:02
8:23
+0:14
20K
12.43 mi12:39:571:42:468:1627:00
8:41
+0:18
Half
13.11 mi12:45:451:48:348:175:48
8:30
-0:11
25K
15.53 mi13:06:482:09:378:2121:03
8:41
+0:11
30K
18.64 mi13:35:322:38:218:3028:44
9:15
+0:34
20M
20.00 mi13:48:222:51:118:3412:50
9:27
+0:12
21M
21.00 mi13:58:173:01:068:379:55
9:55
+0:28
35K
21.75 mi14:04:553:07:448:386:38
8:52
-1:03
23M
23.00 mi14:16:353:19:248:4011:40
9:19
+0:27
24M
24.00 mi14:25:273:28:168:418:52
8:52
-0:27
40K
24.85 mi14:32:583:35:478:417:31
8:47
-0:05
25.2M
25.20 mi14:36:143:39:038:423:16
9:28
+0:41
Finish
26.22 mi14:45:013:47:508:428:47
8:37
-0:51

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

7:52 /mi

Average Pace

8:42 /mi

Slowest Pace

9:55 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:21:34

36% of race

Time at Steady Pace

1:19:51

35% of race

Time at Slower Pace

1:06:25

29% of race

Average Pace: 8:41 /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 mi11:21:3624:257:5224:25
7:52
#15352
10K
6.21 mi11:46:5549:448:0025:19
8:09
#16556
15K
9.32 mi12:12:571:15:468:0826:02
8:23
#17286
20K
12.43 mi12:39:571:42:468:1627:00
8:41
#17815
Half
13.11 mi12:45:451:48:348:175:48
8:30
#17869
25K
15.53 mi13:06:482:09:378:2121:03
8:41
#17891
30K
18.64 mi13:35:322:38:218:3028:44
9:15
#18072
20M
20.00 mi13:48:222:51:118:3412:50
9:27
#18150
21M
21.00 mi13:58:173:01:068:379:55
9:55
#18163
35K
21.75 mi14:04:553:07:448:386:38
8:52
#18124
23M
23.00 mi14:16:353:19:248:4011:40
9:19
#18101
24M
24.00 mi14:25:273:28:168:418:52
8:52
#18008
40K
24.85 mi14:32:583:35:478:417:31
8:47
#17899
25.2M
25.20 mi14:36:143:39:038:423:16
9:28
#17846
Finish
26.22 mi14:45:013:47:508:428:47
8:37
#17799
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi3.11 mi153524755475518584(Top 65%)6650(Top 54%)6650(Top 669%)
10K6.21 mi3.10 mi16556-12045475-7205475-72017554(Top 62%)6035(Top 49%)6035(Top 607%)
15K9.32 mi3.11 mi17286-7305886-4115886-41118584(Top 65%)6650(Top 54%)6650(Top 669%)
20K12.43 mi3.11 mi17815-5296233-3476233-34719370(Top 68%)7115(Top 58%)7115(Top 716%)
Half13.11 mi0.68 mi17869-546268-356268-3519239(Top 68%)7030(Top 57%)7030(Top 707%)
25K15.53 mi2.42 mi17891-226292-246292-2418296(Top 64%)6587(Top 54%)6587(Top 663%)
30K18.64 mi3.11 mi18072-1816439-1476439-14718892(Top 67%)7058(Top 58%)7058(Top 710%)
20M20.00 mi1.36 mi18150-786502-636502-6318914(Top 67%)7213(Top 59%)7213(Top 726%)
21M21.00 mi1.00 mi18163-136535-336535-3317992(Top 63%)6786(Top 55%)6786(Top 683%)
35K21.75 mi0.75 mi18124+396525+106525+1017620(Top 62%)6695(Top 55%)6695(Top 674%)
23M23.00 mi1.25 mi18101+236552-276552-2717863(Top 63%)6920(Top 57%)6920(Top 696%)
24M24.00 mi1.00 mi18008+936523+296523+2916690(Top 59%)6315(Top 52%)6315(Top 635%)
40K24.85 mi0.85 mi17899+1096489+346489+3415180(Top 53%)5624(Top 46%)5624(Top 566%)
25.2M25.20 mi0.35 mi17846+536471+186471+1814541(Top 51%)5330(Top 44%)5330(Top 536%)
Finish26.22 mi1.02 mi17799+476465+66465+616990(Top 60%)6558(Top 54%)6558(Top 660%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 65%
×21stories
+97ft-345ft

Overall

18584

Females

6650

F55-59

6650

5K→10K

3.1 - 6.2 mi

Top 62%
×5stories
+79ft-138ft

Overall

17554

Females

6035

F55-59

6035

10K→15K

6.2 - 9.3 mi

Top 65%
×3stories
+67ft-78ft

Overall

18584

Females

6650

F55-59

6650

15K→20K

9.3 - 12.4 mi

Top 68%
×5stories
+106ft-86ft

Overall

19370

Females

7115

F55-59

7115

20K→Half

12.4 - 13.1 mi

Top 68%
×2stories
+19ft-37ft

Overall

19239

Females

7030

F55-59

7030

Half→25K

13.1 - 15.5 mi

Top 64%
×4stories
+66ft-88ft

Overall

18296

Females

6587

F55-59

6587

25K→30K

15.5 - 18.6 mi

Top 67%
×9stories
+181ft-148ft

Overall

18892

Females

7058

F55-59

7058

30K→20M

18.6 - 20.0 mi

Top 67%
×5stories
+64ft-50ft

Overall

18914

Females

7213

F55-59

7213

20M→21M

20.0 - 21.0 mi

Top 63%
×8stories
+106ft-24ft

Overall

17992

Females

6786

F55-59

6786

21M→35K

21.0 - 21.8 mi

Top 62%
×7stories
+17ft-86ft

Overall

17620

Females

6695

F55-59

6695

35K→23M

21.8 - 23.0 mi

Top 63%
×5stories
+23ft-63ft

Overall

17863

Females

6920

F55-59

6920

23M→24M

23.0 - 24.0 mi

Top 59%
×6stories
+12ft-82ft

Overall

16690

Females

6315

F55-59

6315

24M→40K

24.0 - 24.9 mi

Top 53%
×1story
+6ft-20ft

Overall

15180

Females

5624

F55-59

5624

40K→25.2M

24.9 - 25.2 mi

Top 51%
×1story
+13ft-16ft

Overall

14541

Females

5330

F55-59

5330

25.2M→Finish

25.2 - 26.2 mi

Top 60%
×2stories
+22ft-21ft

Overall

16990

Females

6558

F55-59

6558

Passing Analysis

Category:
Athletes Passed
1317
Passed By
3764
Net Change
-2447
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15352
5K → 10K511255-1204#15352#16556
10K → 15K54784-730#16556#17286
15K → 20K74603-529#17286#17815
20K → Half1973-54#17815#17869
Half → 25K157179-22#17869#17891
25K → 30K183364-181#17891#18072
30K → 20M94172-78#18072#18150
20M → 21M97110-13#18150#18163
21M → 35K7536+39#18163#18124
35K → 23M11693+23#18124#18101
23M → 24M11421+93#18101#18008
24M → 40K12718+109#18008#17899
40K → 25.2M618+53#17899#17846
25.2M → Finish9548+47#17846#17799
TOTALS13173764-2447
📊

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