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BOSTON MARATHON 2025

Lily Dai

Bib: 19092•F

NJ

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 40%
Masters (Masters Women)
#0 / 6759
Top 25%
Division (F55-59)
#0 / 994
Top 8%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:17
Rank: #17650
Start → 5K
25:17 | 8:08/mi
10K· 6.21 mi
50:32
Rank: #17506 (+144)
5K → 10K
25:15 | 8:08/mi
15K· 9.32 mi
1:15:38
Rank: #17193 (+313)
10K → 15K
25:06 | 8:05/mi
20K· 12.43 mi
1:41:26
Rank: #17108 (+85)
15K → 20K
25:48 | 8:18/mi
Half· 13.11 mi
1:46:59
Rank: #17073 (+35)
20K → Half
5:33 | 8:08/mi
25K· 15.53 mi
2:07:06
Rank: #16847 (+226)
Half → 25K
20:07 | 8:18/mi
30K· 18.64 mi
2:33:34
Rank: #16451 (+396)
25K → 30K
26:28 | 8:31/mi
20M
2:45:08
Rank: #16238 (+213)
30K → 20M
11:34 | 8:31/mi
21M
2:54:00
Rank: #15983 (+255)
20M → 21M
8:52 | 8:52/mi
35K· 21.75 mi
3:00:08
Rank: #15848 (+135)
21M → 35K
6:08 | 8:12/mi
23M
3:10:40
Rank: #15646 (+202)
35K → 23M
10:32 | 8:25/mi
24M
3:18:48
Rank: #15492 (+154)
23M → 24M
8:08 | 8:08/mi
40K· 24.85 mi
3:25:43
Rank: #15287 (+205)
24M → 40K
6:55 | 8:05/mi
25.2M
3:28:47
Rank: #15220 (+67)
40K → 25.2M
3:04 | 8:54/mi
Finish· 26.22 mi
3:36:26
Rank: #14950 (+270)
25.2M → Finish
7:39 | 7:30/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:46:59
Pace8:10 /mi
2nd Half
Distance13.11 mi
Time1:49:27
Pace8:21 /mi
📊Positive Split: 2.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:21:3725:178:0825:17
8:08
-
10K
6.21 mi11:46:5250:328:0825:15
8:08
0:00
15K
9.32 mi12:11:581:15:388:0725:06
8:05
-0:03
20K
12.43 mi12:37:461:41:268:1025:48
8:18
+0:13
Half
13.11 mi12:43:191:46:598:105:33
8:08
-0:10
25K
15.53 mi13:03:262:07:068:1120:07
8:18
+0:10
30K
18.64 mi13:29:542:33:348:1426:28
8:31
+0:13
20M
20.00 mi13:41:282:45:088:1511:34
8:31
0:00
21M
21.00 mi13:50:202:54:008:178:52
8:52
+0:21
35K
21.75 mi13:56:283:00:088:176:08
8:12
-0:40
23M
23.00 mi14:07:003:10:408:1710:32
8:25
+0:13
24M
24.00 mi14:15:083:18:488:178:08
8:08
-0:17
40K
24.85 mi14:22:033:25:438:176:55
8:05
-0:03
25.2M
25.20 mi14:25:073:28:478:173:04
8:54
+0:49
Finish
26.22 mi14:32:463:36:268:167:39
7:30
-1:24

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

7:30 /mi

Average Pace

8:16 /mi

Slowest Pace

8:54 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:50:01

51% of race

Time at Steady Pace

1:34:29

44% of race

Time at Slower Pace

11:56

6% of race

Average Pace: 8:15 /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 mi11:21:3725:178:0825:17
8:08
#17650
10K
6.21 mi11:46:5250:328:0825:15
8:08
#17506
15K
9.32 mi12:11:581:15:388:0725:06
8:05
#17193
20K
12.43 mi12:37:461:41:268:1025:48
8:18
#17108
Half
13.11 mi12:43:191:46:598:105:33
8:08
#17073
25K
15.53 mi13:03:262:07:068:1120:07
8:18
#16847
30K
18.64 mi13:29:542:33:348:1426:28
8:31
#16451
20M
20.00 mi13:41:282:45:088:1511:34
8:31
#16238
21M
21.00 mi13:50:202:54:008:178:52
8:52
#15983
35K
21.75 mi13:56:283:00:088:176:08
8:12
#15848
23M
23.00 mi14:07:003:10:408:1710:32
8:25
#15646
24M
24.00 mi14:15:083:18:488:178:08
8:08
#15492
40K
24.85 mi14:22:033:25:438:176:55
8:05
#15287
25.2M
25.20 mi14:25:073:28:478:173:04
8:54
#15220
Finish
26.22 mi14:32:463:36:268:167:39
7:30
#14950
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi3.11 mi176506122612216608(Top 58%)5501(Top 45%)5501(Top 553%)
10K6.21 mi3.10 mi17506+1446037+856037+8517401(Top 61%)5936(Top 49%)5936(Top 597%)
15K9.32 mi3.11 mi17193+3135825+2125825+21216608(Top 58%)5501(Top 45%)5501(Top 553%)
20K12.43 mi3.11 mi17108+855808+175808+1716958(Top 60%)5751(Top 47%)5751(Top 579%)
Half13.11 mi0.68 mi17073+355792+165792+1616867(Top 59%)5670(Top 46%)5670(Top 570%)
25K15.53 mi2.42 mi16847+2265674+1185674+11815902(Top 56%)5253(Top 43%)5253(Top 528%)
30K18.64 mi3.11 mi16451+3965499+1755499+17514877(Top 52%)4835(Top 40%)4835(Top 486%)
20M20.00 mi1.36 mi16238+2135402+975402+9713899(Top 49%)4465(Top 37%)4465(Top 449%)
21M21.00 mi1.00 mi15983+2555291+1115291+11112755(Top 45%)4016(Top 33%)4016(Top 404%)
35K21.75 mi0.75 mi15848+1355234+575234+5713672(Top 48%)4519(Top 37%)4519(Top 455%)
23M23.00 mi1.25 mi15646+2025159+755159+7512802(Top 45%)4168(Top 34%)4168(Top 419%)
24M24.00 mi1.00 mi15492+1545087+725087+7212182(Top 43%)3898(Top 32%)3898(Top 392%)
40K24.85 mi0.85 mi15287+2055005+825005+8210842(Top 38%)3351(Top 27%)3351(Top 337%)
25.2M25.20 mi0.35 mi15220+674982+234982+2311298(Top 40%)3672(Top 30%)3672(Top 369%)
Finish26.22 mi1.02 mi14950+2704845+1374845+1379291(Top 33%)2678(Top 22%)2678(Top 269%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 58%
×21stories
+97ft-345ft

Overall

16608

Females

5501

F55-59

5501

5K→10K

3.1 - 6.2 mi

Top 61%
×5stories
+79ft-138ft

Overall

17401

Females

5936

F55-59

5936

10K→15K

6.2 - 9.3 mi

Top 58%
×3stories
+67ft-78ft

Overall

16608

Females

5501

F55-59

5501

15K→20K

9.3 - 12.4 mi

Top 60%
×5stories
+106ft-86ft

Overall

16958

Females

5751

F55-59

5751

20K→Half

12.4 - 13.1 mi

Top 59%
×2stories
+19ft-37ft

Overall

16867

Females

5670

F55-59

5670

Half→25K

13.1 - 15.5 mi

Top 56%
×4stories
+66ft-88ft

Overall

15902

Females

5253

F55-59

5253

25K→30K

15.5 - 18.6 mi

Top 52%
×9stories
+181ft-148ft

Overall

14877

Females

4835

F55-59

4835

30K→20M

18.6 - 20.0 mi

Top 49%
×5stories
+64ft-50ft

Overall

13899

Females

4465

F55-59

4465

20M→21M

20.0 - 21.0 mi

Top 45%
×8stories
+106ft-24ft

Overall

12755

Females

4016

F55-59

4016

21M→35K

21.0 - 21.8 mi

Top 48%
×7stories
+17ft-86ft

Overall

13672

Females

4519

F55-59

4519

35K→23M

21.8 - 23.0 mi

Top 45%
×5stories
+23ft-63ft

Overall

12802

Females

4168

F55-59

4168

23M→24M

23.0 - 24.0 mi

Top 43%
×6stories
+12ft-82ft

Overall

12182

Females

3898

F55-59

3898

24M→40K

24.0 - 24.9 mi

Top 38%
×1story
+6ft-20ft

Overall

10842

Females

3351

F55-59

3351

40K→25.2M

24.9 - 25.2 mi

Top 40%
×1story
+13ft-16ft

Overall

11298

Females

3672

F55-59

3672

25.2M→Finish

25.2 - 26.2 mi

Top 33%
×2stories
+22ft-21ft

Overall

9291

Females

2678

F55-59

2678

Passing Analysis

Category:
Athletes Passed
3318
Passed By
618
Net Change
+2700
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17650
5K → 10K364220+144#17650#17506
10K → 15K39178+313#17506#17193
15K → 20K227142+85#17193#17108
20K → Half4813+35#17108#17073
Half → 25K26236+226#17073#16847
25K → 30K45458+396#16847#16451
30K → 20M22613+213#16451#16238
20M → 21M26611+255#16238#15983
21M → 35K1438+135#15983#15848
35K → 23M22119+202#15848#15646
23M → 24M1639+154#15646#15492
24M → 40K2072+205#15492#15287
40K → 25.2M736+67#15287#15220
25.2M → Finish2733+270#15220#14950
TOTALS3318618+2700
📊

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