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BOSTON MARATHON 2025

Leah Parry

Bib: 18921•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 48%
Masters (Masters Women)
#0 / 6759
Top 37%
Division (F40-44)
#0 / 1718
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:32
Rank: #15677
Start → 5K
24:32 | 7:54/mi
10K· 6.21 mi
49:19
Rank: #15994 (-317)
5K → 10K
24:47 | 7:59/mi
15K· 9.32 mi
1:14:07
Rank: #15937 (+57)
10K → 15K
24:48 | 7:59/mi
20K· 12.43 mi
1:39:31
Rank: #15995 (-58)
15K → 20K
25:24 | 8:11/mi
Half· 13.11 mi
1:45:04
Rank: #16054 (-59)
20K → Half
5:33 | 8:08/mi
25K· 15.53 mi
2:05:28
Rank: #16150 (-96)
Half → 25K
20:24 | 8:25/mi
30K· 18.64 mi
2:32:54
Rank: #16226 (-76)
25K → 30K
27:26 | 8:50/mi
20M
2:45:29
Rank: #16335 (-109)
30K → 20M
12:35 | 9:16/mi
21M
2:55:37
Rank: #16482 (-147)
20M → 21M
10:08 | 10:08/mi
35K· 21.75 mi
3:01:53
Rank: #16376 (+106)
21M → 35K
6:16 | 8:23/mi
23M
3:13:34
Rank: #16441 (-65)
35K → 23M
11:41 | 9:20/mi
24M
3:22:47
Rank: #16550 (-109)
23M → 24M
9:13 | 9:13/mi
40K· 24.85 mi
3:30:53
Rank: #16637 (-87)
24M → 40K
8:06 | 9:28/mi
25.2M
3:34:37
Rank: #16722 (-85)
40K → 25.2M
3:44 | 10:50/mi
Finish· 26.22 mi
3:43:41
Rank: #16801 (-79)
25.2M → Finish
9:04 | 8:54/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:45:04
Pace8:01 /mi
2nd Half
Distance13.11 mi
Time1:58:37
Pace9:03 /mi
📊Positive Split: 12.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:5324:327:5424:32
7:54
-
10K
6.21 mi11:40:4049:197:5624:47
7:59
+0:05
15K
9.32 mi12:05:281:14:077:5724:48
7:59
0:00
20K
12.43 mi12:30:521:39:318:0025:24
8:11
+0:12
Half
13.11 mi12:36:251:45:048:015:33
8:08
-0:03
25K
15.53 mi12:56:492:05:288:0520:24
8:25
+0:17
30K
18.64 mi13:24:152:32:548:1227:26
8:50
+0:25
20M
20.00 mi13:36:502:45:298:1612:35
9:16
+0:26
21M
21.00 mi13:46:582:55:378:2210:08
10:08
+0:52
35K
21.75 mi13:53:143:01:538:226:16
8:23
-1:45
23M
23.00 mi14:04:553:13:348:2511:41
9:20
+0:57
24M
24.00 mi14:14:083:22:478:279:13
9:13
-0:07
40K
24.85 mi14:22:143:30:538:298:06
9:28
+0:15
25.2M
25.20 mi14:25:583:34:378:313:44
10:50
+1:22
Finish
26.22 mi14:35:023:43:418:329:04
8:54
-1:56

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

7:54 /mi

Average Pace

8:32 /mi

Slowest Pace

10:50 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:11:44

59% of race

Time at Steady Pace

45:43

20% of race

Time at Slower Pace

46:14

21% of race

Average Pace: 8:32 /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 mi11:15:5324:327:5424:32
7:54
#15677
10K
6.21 mi11:40:4049:197:5624:47
7:59
#15994
15K
9.32 mi12:05:281:14:077:5724:48
7:59
#15937
20K
12.43 mi12:30:521:39:318:0025:24
8:11
#15995
Half
13.11 mi12:36:251:45:048:015:33
8:08
#16054
25K
15.53 mi12:56:492:05:288:0520:24
8:25
#16150
30K
18.64 mi13:24:152:32:548:1227:26
8:50
#16226
20M
20.00 mi13:36:502:45:298:1612:35
9:16
#16335
21M
21.00 mi13:46:582:55:378:2210:08
10:08
#16482
35K
21.75 mi13:53:143:01:538:226:16
8:23
#16376
23M
23.00 mi14:04:553:13:348:2511:41
9:20
#16441
24M
24.00 mi14:14:083:22:478:279:13
9:13
#16550
40K
24.85 mi14:22:143:30:538:298:06
9:28
#16637
25.2M
25.20 mi14:25:583:34:378:313:44
10:50
#16722
Finish
26.22 mi14:35:023:43:418:329:04
8:54
#16801
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi156774944494415921(Top 56%)5103(Top 42%)5103(Top 297%)
10K6.21 mi3.10 mi15994-3175133-1895133-18916309(Top 57%)5316(Top 43%)5316(Top 309%)
15K9.32 mi3.11 mi15937+575107+265107+2615921(Top 56%)5103(Top 42%)5103(Top 297%)
20K12.43 mi3.11 mi15995-585147-405147-4016158(Top 57%)5310(Top 43%)5310(Top 309%)
Half13.11 mi0.68 mi16054-595185-385185-3816918(Top 60%)5721(Top 47%)5721(Top 333%)
25K15.53 mi2.42 mi16150-965247-625247-6216670(Top 59%)5672(Top 46%)5672(Top 330%)
30K18.64 mi3.11 mi16226-765358-1115358-11116781(Top 59%)5908(Top 48%)5908(Top 344%)
20M20.00 mi1.36 mi16335-1095455-975455-9718097(Top 64%)6766(Top 55%)6766(Top 394%)
21M21.00 mi1.00 mi16482-1475573-1185573-11818806(Top 66%)7231(Top 59%)7231(Top 421%)
35K21.75 mi0.75 mi16376+1065527+465527+4614775(Top 52%)5124(Top 42%)5124(Top 298%)
23M23.00 mi1.25 mi16441-655594-675594-6717938(Top 63%)6953(Top 57%)6953(Top 405%)
24M24.00 mi1.00 mi16550-1095689-955689-9518436(Top 65%)7265(Top 59%)7265(Top 423%)
40K24.85 mi0.85 mi16637-875776-875776-8718618(Top 66%)7434(Top 61%)7434(Top 433%)
25.2M25.20 mi0.35 mi16722-855840-645840-6420123(Top 71%)8213(Top 67%)8213(Top 478%)
Finish26.22 mi1.02 mi16801-795905-655905-6518529(Top 65%)7343(Top 60%)7343(Top 427%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 56%
×21stories
+97ft-345ft

Overall

15921

Females

5103

F40-44

5103

5K→10K

3.1 - 6.2 mi

Top 57%
×5stories
+79ft-138ft

Overall

16309

Females

5316

F40-44

5316

10K→15K

6.2 - 9.3 mi

Top 56%
×3stories
+67ft-78ft

Overall

15921

Females

5103

F40-44

5103

15K→20K

9.3 - 12.4 mi

Top 57%
×5stories
+106ft-86ft

Overall

16158

Females

5310

F40-44

5310

20K→Half

12.4 - 13.1 mi

Top 60%
×2stories
+19ft-37ft

Overall

16918

Females

5721

F40-44

5721

Half→25K

13.1 - 15.5 mi

Top 59%
×4stories
+66ft-88ft

Overall

16670

Females

5672

F40-44

5672

25K→30K

15.5 - 18.6 mi

Top 59%
×9stories
+181ft-148ft

Overall

16781

Females

5908

F40-44

5908

30K→20M

18.6 - 20.0 mi

Top 64%
×5stories
+64ft-50ft

Overall

18097

Females

6766

F40-44

6766

20M→21M

20.0 - 21.0 mi

Top 66%
×8stories
+106ft-24ft

Overall

18806

Females

7231

F40-44

7231

21M→35K

21.0 - 21.8 mi

Top 52%
×7stories
+17ft-86ft

Overall

14775

Females

5124

F40-44

5124

35K→23M

21.8 - 23.0 mi

Top 63%
×5stories
+23ft-63ft

Overall

17938

Females

6953

F40-44

6953

23M→24M

23.0 - 24.0 mi

Top 65%
×6stories
+12ft-82ft

Overall

18436

Females

7265

F40-44

7265

24M→40K

24.0 - 24.9 mi

Top 66%
×1story
+6ft-20ft

Overall

18618

Females

7434

F40-44

7434

40K→25.2M

24.9 - 25.2 mi

Top 71%
×1story
+13ft-16ft

Overall

20123

Females

8213

F40-44

8213

25.2M→Finish

25.2 - 26.2 mi

Top 65%
×2stories
+22ft-21ft

Overall

18529

Females

7343

F40-44

7343

Passing Analysis

Category:
Athletes Passed
1483
Passed By
2607
Net Change
-1124
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15677
5K → 10K199516-317#15677#15994
10K → 15K223166+57#15994#15937
15K → 20K180238-58#15937#15995
20K → Half2281-59#15995#16054
Half → 25K137233-96#16054#16150
25K → 30K198274-76#16150#16226
30K → 20M76185-109#16226#16335
20M → 21M68215-147#16335#16482
21M → 35K12014+106#16482#16376
35K → 23M98163-65#16376#16441
23M → 24M45154-109#16441#16550
24M → 40K56143-87#16550#16637
40K → 25.2M1196-85#16637#16722
25.2M → Finish50129-79#16722#16801
TOTALS14832607-1124
📊

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