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BOSTON MARATHON 2025

Kathleen Cahill

Bib: 28251•F

MA

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Division (F18-39)
#0 / 5469
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
29:20
Rank: #24044
Start → 5K
9:26/mi
29:20 split
10K· 6.21 mi
57:03
Rank: #23146 (+898)
5K → 10K
8:55/mi
27:43 split
15K· 9.32 mi
1:24:28
Rank: #22552 (+594)
10K → 15K
8:49/mi
27:25 split
20K· 12.43 mi
1:53:11
Rank: #22391 (+161)
15K → 20K
9:15/mi
28:43 split
Half· 13.11 mi
1:59:09
Rank: #22302 (+89)
20K → Half
8:45/mi
5:58 split
25K· 15.53 mi
2:21:37
Rank: #22077 (+225)
Half → 25K
9:16/mi
22:28 split
30K· 18.64 mi
2:51:26
Rank: #21734 (+343)
25K → 30K
9:36/mi
29:49 split
20M
3:04:53
Rank: #21657 (+77)
30K → 20M
9:54/mi
13:27 split
21M
3:15:47
Rank: #21626 (+31)
20M → 21M
10:54/mi
10:54 split
35K· 21.75 mi
3:22:18
Rank: #21475 (+151)
21M → 35K
8:43/mi
6:31 split
23M
3:33:57
Rank: #21233 (+242)
35K → 23M
9:18/mi
11:39 split
24M
3:43:09
Rank: #21112 (+121)
23M → 24M
9:12/mi
9:12 split
40K· 24.85 mi
3:51:18
Rank: #21028 (+84)
24M → 40K
9:32/mi
8:09 split
25.2M
3:54:34
Rank: #20927 (+101)
40K → 25.2M
9:28/mi
3:16 split
Finish· 26.22 mi
4:03:44
Rank: #20853 (+74)
25.2M → Finish
9:00/mi
9:10 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:59:09
Pace9:05 /mi
2nd Half
Distance13.11 mi
Time2:04:35
Pace9:30 /mi
📊Positive Split: 4.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:46:4029:209:2629:20
9:26
-
10K
6.21 mi12:14:2357:039:1127:43
8:55
-0:31
15K
9.32 mi12:41:481:24:289:0427:25
8:49
-0:06
20K
12.43 mi13:10:311:53:119:0628:43
9:15
+0:26
Half
13.11 mi13:16:291:59:099:055:58
8:45
-0:30
25K
15.53 mi13:38:572:21:379:0722:28
9:16
+0:31
30K
18.64 mi14:08:462:51:269:1229:49
9:36
+0:20
20M
20.00 mi14:22:133:04:539:1513:27
9:54
+0:18
21M
21.00 mi14:33:073:15:479:1910:54
10:54
+1:00
35K
21.75 mi14:39:383:22:189:186:31
8:43
-2:11
23M
23.00 mi14:51:173:33:579:1811:39
9:18
+0:35
24M
24.00 mi15:00:293:43:099:189:12
9:12
-0:06
40K
24.85 mi15:08:383:51:189:188:09
9:32
+0:20
25.2M
25.20 mi15:11:543:54:349:183:16
9:28
-0:04
Finish
26.22 mi15:21:044:03:449:189:10
9:00
-0:28

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

8:43 /mi

Average Pace

9:18 /mi

Slowest Pace

10:54 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:16:47

32% of race

Time at Steady Pace

1:44:38

43% of race

Time at Slower Pace

1:02:19

26% of race

Average Pace: 9:18 /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 mi11:46:4029:209:2629:20
9:26
#24044
10K
6.21 mi12:14:2357:039:1127:43
8:55
#23146
15K
9.32 mi12:41:481:24:289:0427:25
8:49
#22552
20K
12.43 mi13:10:311:53:119:0628:43
9:15
#22391
Half
13.11 mi13:16:291:59:099:055:58
8:45
#22302
25K
15.53 mi13:38:572:21:379:0722:28
9:16
#22077
30K
18.64 mi14:08:462:51:269:1229:49
9:36
#21734
20M
20.00 mi14:22:133:04:539:1513:27
9:54
#21657
21M
21.00 mi14:33:073:15:479:1910:54
10:54
#21626
35K
21.75 mi14:39:383:22:189:186:31
8:43
#21475
23M
23.00 mi14:51:173:33:579:1811:39
9:18
#21233
24M
24.00 mi15:00:293:43:099:189:12
9:12
#21112
40K
24.85 mi15:08:383:51:189:188:09
9:32
#21028
25.2M
25.20 mi15:11:543:54:349:183:16
9:28
#20927
Finish
26.22 mi15:21:044:03:449:189:10
9:00
#20853
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi240449719971921158(Top 74%)8090(Top 66%)8090(Top 148%)
10K6.21 mi3.10 mi23146+8989226+4939226+49322049(Top 78%)8622(Top 71%)8622(Top 158%)
15K9.32 mi3.11 mi22552+5948883+3438883+34321158(Top 74%)8090(Top 66%)8090(Top 148%)
20K12.43 mi3.11 mi22391+1618808+758808+7522055(Top 78%)8615(Top 70%)8615(Top 158%)
Half13.11 mi0.68 mi22302+898767+418767+4120685(Top 73%)7870(Top 64%)7870(Top 144%)
25K15.53 mi2.42 mi22077+2258647+1208647+12021050(Top 74%)8124(Top 66%)8124(Top 149%)
30K18.64 mi3.11 mi21734+3438474+1738474+17320351(Top 72%)7854(Top 64%)7854(Top 144%)
20M20.00 mi1.36 mi21657+778445+298445+2920622(Top 73%)8153(Top 67%)8153(Top 149%)
21M21.00 mi1.00 mi21626+318462-178462-1721137(Top 74%)8517(Top 70%)8517(Top 156%)
35K21.75 mi0.75 mi21475+1518388+748388+7416834(Top 59%)6258(Top 51%)6258(Top 114%)
23M23.00 mi1.25 mi21233+2428287+1018287+10117817(Top 63%)6905(Top 56%)6905(Top 126%)
24M24.00 mi1.00 mi21112+1218254+338254+3318380(Top 65%)7245(Top 59%)7245(Top 132%)
40K24.85 mi0.85 mi21028+848220+348220+3418868(Top 66%)7568(Top 62%)7568(Top 138%)
25.2M25.20 mi0.35 mi20927+1018169+518169+5114572(Top 51%)5361(Top 44%)5361(Top 98%)
Finish26.22 mi1.02 mi20853+748144+258144+2519065(Top 67%)7644(Top 63%)7644(Top 140%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 74%
×21story building
+97ft-345ft

Overall

21158

Females

8090

F18-39

8090

5K→10K

3.1 - 6.2 mi

Top 78%
×5story building
+79ft-138ft

Overall

22049

Females

8622

F18-39

8622

10K→15K

6.2 - 9.3 mi

Top 74%
×3story building
+67ft-78ft

Overall

21158

Females

8090

F18-39

8090

15K→20K

9.3 - 12.4 mi

Top 78%
×5story building
+106ft-86ft

Overall

22055

Females

8615

F18-39

8615

20K→Half

12.4 - 13.1 mi

Top 73%
×2story building
+19ft-37ft

Overall

20685

Females

7870

F18-39

7870

Half→25K

13.1 - 15.5 mi

Top 74%
×4story building
+66ft-88ft

Overall

21050

Females

8124

F18-39

8124

25K→30K

15.5 - 18.6 mi

Top 72%
×9story building
+181ft-148ft

Overall

20351

Females

7854

F18-39

7854

30K→20M

18.6 - 20.0 mi

Top 73%
×5story building
+64ft-50ft

Overall

20622

Females

8153

F18-39

8153

20M→21M

20.0 - 21.0 mi

Top 74%
×8story building
+106ft-24ft

Overall

21137

Females

8517

F18-39

8517

21M→35K

21.0 - 21.8 mi

Top 59%
×7story building
+17ft-86ft

Overall

16834

Females

6258

F18-39

6258

35K→23M

21.8 - 23.0 mi

Top 63%
×5story building
+23ft-63ft

Overall

17817

Females

6905

F18-39

6905

23M→24M

23.0 - 24.0 mi

Top 65%
×6story building
+12ft-82ft

Overall

18380

Females

7245

F18-39

7245

24M→40K

24.0 - 24.9 mi

Top 66%
×1story
+6ft-20ft

Overall

18868

Females

7568

F18-39

7568

40K→25.2M

24.9 - 25.2 mi

Top 51%
×1story
+13ft-16ft

Overall

14572

Females

5361

F18-39

5361

25.2M→Finish

25.2 - 26.2 mi

Top 67%
×2story building
+22ft-21ft

Overall

19065

Females

7644

F18-39

7644

Passing Analysis

Category:
Athletes Passed
3588
Passed By
397
Net Change
+3191
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24044
5K → 10K92224+898#24044#23146
10K → 15K6028+594#23146#22552
15K → 20K25493+161#22552#22391
20K → Half912+89#22391#22302
Half → 25K27247+225#22302#22077
25K → 30K39855+343#22077#21734
30K → 20M13457+77#21734#21657
20M → 21M9968+31#21657#21626
21M → 35K1521+151#21626#21475
35K → 23M25210+242#21475#21233
23M → 24M13211+121#21233#21112
24M → 40K9612+84#21112#21028
40K → 25.2M1021+101#21028#20927
25.2M → Finish828+74#20927#20853
TOTALS3588397+3191
📊

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