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BOSTON MARATHON 2025

Jiyoung Lee

Bib: 22554•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Top 42%
Division (F45-49)
#0 / 1813
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
7:53/mi
24:30
↑ 97↓ 3451.5%
10K· 6.21 mi
8:00/mi
49:20
↑ 79↓ 1380.4%
15K· 9.32 mi
8:20/mi
1:15:13
↑ 67↓ 78
20K· 12.43 mi
8:42/mi
1:42:14
↑ 106↓ 860.1%
Half· 13.11 mi
8:14/mi
1:47:51
↑ 19↓ 370.5%
25K· 15.53 mi
9:04/mi
2:09:50
↑ 66↓ 880.2%
30K· 18.64 mi
9:20/mi
2:38:51
↑ 181↓ 1480.2%
20M
9:13/mi
2:51:23
↑ 64↓ 500.2%
21M
9:54/mi
3:01:17
↑ 106↓ 241.6%
35K· 21.75 mi
8:17/mi
3:07:29
↑ 17↓ 861.7%
23M
8:59/mi
3:18:44
↑ 23↓ 630.6%
24M
8:36/mi
3:27:20
↓ 821.3%
40K· 24.85 mi
8:43/mi
3:34:47
↓ 200.3%
25.2M
9:54/mi
3:38:12
↑ 13↓ 160.2%
Finish· 26.22 mi
8:37/mi
3:46:59
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:47:51
Pace8:14 /mi
2nd Half
Distance13.11 mi
Time1:59:08
Pace9:05 /mi
📊Positive Split: 10.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:39:5924:307:5324:30
7:53
-
10K
6.21 mi12:04:4949:207:5624:50
8:00
+0:07
15K
9.32 mi12:30:421:15:138:0425:53
8:20
+0:20
20K
12.43 mi12:57:431:42:148:1427:01
8:42
+0:22
Half
13.11 mi13:03:201:47:518:145:37
8:14
-0:28
25K
15.53 mi13:25:192:09:508:2121:59
9:04
+0:50
30K
18.64 mi13:54:202:38:518:3129:01
9:20
+0:16
20M
20.00 mi14:06:522:51:238:3412:32
9:13
-0:07
21M
21.00 mi14:16:463:01:178:389:54
9:54
+0:41
35K
21.75 mi14:22:583:07:298:376:12
8:17
-1:37
23M
23.00 mi14:34:133:18:448:3811:15
8:59
+0:42
24M
24.00 mi14:42:493:27:208:388:36
8:36
-0:23
40K
24.85 mi14:50:163:34:478:387:27
8:43
+0:07
25.2M
25.20 mi14:53:413:38:128:403:25
9:54
+1:11
Finish
26.22 mi15:02:283:46:598:408:47
8:37
-1:17

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

7:53 /mi

Average Pace

8:40 /mi

Slowest Pace

9:54 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:27:02

38% of race

Time at Steady Pace

1:03:06

28% of race

Time at Slower Pace

1:16:51

34% of race

Average Pace: 8:39 /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 mi11:39:5924:307:5324:30
7:53
#15573
10K
6.21 mi12:04:4949:207:5624:50
8:00
#16023
15K
9.32 mi12:30:421:15:138:0425:53
8:20
#16852
20K
12.43 mi12:57:431:42:148:1427:01
8:42
#17528
Half
13.11 mi13:03:201:47:518:145:37
8:14
#17515
25K
15.53 mi13:25:192:09:508:2121:59
9:04
#17973
30K
18.64 mi13:54:202:38:518:3129:01
9:20
#18275
20M
20.00 mi14:06:522:51:238:3412:32
9:13
#18220
21M
21.00 mi14:16:463:01:178:389:54
9:54
#18207
35K
21.75 mi14:22:583:07:298:376:12
8:17
#18063
23M
23.00 mi14:34:133:18:448:3811:15
8:59
#17924
24M
24.00 mi14:42:493:27:208:388:36
8:36
#17762
40K
24.85 mi14:50:163:34:478:387:27
8:43
#17648
25.2M
25.20 mi14:53:413:38:128:403:25
9:54
#17621
Finish
26.22 mi15:02:283:46:598:408:47
8:37
#17595
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi155734880488018272(Top 64%)6479(Top 53%)6479(Top 357%)
10K6.21 mi3.10 mi16023-4505152-2725152-27216445(Top 58%)5395(Top 44%)5395(Top 298%)
15K9.32 mi3.11 mi16852-8295638-4865638-48618272(Top 64%)6479(Top 53%)6479(Top 357%)
20K12.43 mi3.11 mi17528-6766051-4136051-41319395(Top 68%)7131(Top 58%)7131(Top 393%)
Half13.11 mi0.68 mi17515+136045+66045+617544(Top 62%)6070(Top 50%)6070(Top 335%)
25K15.53 mi2.42 mi17973-4586344-2996344-29920208(Top 71%)7647(Top 63%)7647(Top 422%)
30K18.64 mi3.11 mi18275-3026547-2036547-20319296(Top 68%)7280(Top 60%)7280(Top 402%)
20M20.00 mi1.36 mi18220+556538+96538+917901(Top 63%)6650(Top 54%)6650(Top 367%)
21M21.00 mi1.00 mi18207+136555-176555-1717914(Top 63%)6744(Top 55%)6744(Top 372%)
35K21.75 mi0.75 mi18063+1446486+696486+6914234(Top 50%)4822(Top 39%)4822(Top 266%)
23M23.00 mi1.25 mi17924+1396452+346452+3416190(Top 57%)5992(Top 49%)5992(Top 331%)
24M24.00 mi1.00 mi17762+1626403+496403+4915202(Top 54%)5500(Top 45%)5500(Top 303%)
40K24.85 mi0.85 mi17648+1146361+426361+4214738(Top 52%)5392(Top 44%)5392(Top 297%)
25.2M25.20 mi0.35 mi17621+276356+56356+516641(Top 59%)6409(Top 52%)6409(Top 354%)
Finish26.22 mi1.02 mi17595+266357-16357-116985(Top 60%)6553(Top 54%)6553(Top 361%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 64%
×21story building
+97ft-345ft

Overall

18272

Females

6479

F45-49

6479

5K→10K

3.1 - 6.2 mi

Top 58%
×5story building
+79ft-138ft

Overall

16445

Females

5395

F45-49

5395

10K→15K

6.2 - 9.3 mi

Top 64%
×3story building
+67ft-78ft

Overall

18272

Females

6479

F45-49

6479

15K→20K

9.3 - 12.4 mi

Top 68%
×5story building
+106ft-86ft

Overall

19395

Females

7131

F45-49

7131

20K→Half

12.4 - 13.1 mi

Top 62%
×2story building
+19ft-37ft

Overall

17544

Females

6070

F45-49

6070

Half→25K

13.1 - 15.5 mi

Top 71%
×4story building
+66ft-88ft

Overall

20208

Females

7647

F45-49

7647

25K→30K

15.5 - 18.6 mi

Top 68%
×9story building
+181ft-148ft

Overall

19296

Females

7280

F45-49

7280

30K→20M

18.6 - 20.0 mi

Top 63%
×5story building
+64ft-50ft

Overall

17901

Females

6650

F45-49

6650

20M→21M

20.0 - 21.0 mi

Top 63%
×8story building
+106ft-24ft

Overall

17914

Females

6744

F45-49

6744

21M→35K

21.0 - 21.8 mi

Top 50%
×7story building
+17ft-86ft

Overall

14234

Females

4822

F45-49

4822

35K→23M

21.8 - 23.0 mi

Top 57%
×5story building
+23ft-63ft

Overall

16190

Females

5992

F45-49

5992

23M→24M

23.0 - 24.0 mi

Top 54%
×6story building
+12ft-82ft

Overall

15202

Females

5500

F45-49

5500

24M→40K

24.0 - 24.9 mi

Top 52%
×1story
+6ft-20ft

Overall

14738

Females

5392

F45-49

5392

40K→25.2M

24.9 - 25.2 mi

Top 59%
×1story
+13ft-16ft

Overall

16641

Females

6409

F45-49

6409

25.2M→Finish

25.2 - 26.2 mi

Top 60%
×2story building
+22ft-21ft

Overall

16985

Females

6553

F45-49

6553

Passing Analysis

Category:
Athletes Passed
1544
Passed By
3566
Net Change
-2022
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15573
5K → 10K166616-450#15573#16023
10K → 15K52881-829#16023#16852
15K → 20K64740-676#16852#17528
20K → Half3724+13#17528#17515
Half → 25K76534-458#17515#17973
25K → 30K145447-302#17973#18275
30K → 20M14590+55#18275#18220
20M → 21M11198+13#18220#18207
21M → 35K1495+144#18207#18063
35K → 23M18142+139#18063#17924
23M → 24M17311+162#17924#17762
24M → 40K13016+114#17762#17648
40K → 25.2M4316+27#17648#17621
25.2M → Finish7246+26#17621#17595
TOTALS15443566-2022
📊

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