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BOSTON MARATHON 2025

Kaitlyn Mcdonough

Bib: 31333•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
27:17
Rank: #21430
Start → 5K
8:47/mi
27:17 split
10K· 6.21 mi
54:52
Rank: #21612 (-182)
5K → 10K
8:53/mi
27:35 split
15K· 9.32 mi
1:25:58
Rank: #23195 (-1583)
10K → 15K
10:01/mi
31:06 split
20K· 12.43 mi
1:58:46
Rank: #23896 (-701)
15K → 20K
10:33/mi
32:48 split
Half· 13.11 mi
2:05:13
Rank: #23874 (+22)
20K → Half
9:27/mi
6:27 split
25K· 15.53 mi
2:29:51
Rank: #23832 (+42)
Half → 25K
10:10/mi
24:38 split
30K· 18.64 mi
3:04:10
Rank: #23891 (-59)
25K → 30K
11:03/mi
34:19 split
20M
3:21:17
Rank: #24160 (-269)
30K → 20M
12:36/mi
17:07 split
21M
3:35:55
Rank: #24418 (-258)
20M → 21M
14:38/mi
14:38 split
35K· 21.75 mi
3:43:32
Rank: #24356 (+62)
21M → 35K
10:11/mi
7:37 split
23M
3:56:42
Rank: #24225 (+131)
35K → 23M
10:31/mi
13:10 split
24M
4:07:05
Rank: #24167 (+58)
23M → 24M
10:23/mi
10:23 split
40K· 24.85 mi
4:16:07
Rank: #24100 (+67)
24M → 40K
10:34/mi
9:02 split
25.2M
4:20:13
Rank: #24082 (+18)
40K → 25.2M
11:53/mi
4:06 split
Finish· 26.22 mi
4:30:10
Rank: #24032 (+50)
25.2M → Finish
9:46/mi
9:57 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:05:13
Pace9:33 /mi
2nd Half
Distance13.11 mi
Time2:24:57
Pace11:03 /mi
📊Positive Split: 15.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:50:0727:178:4727:17
8:47
-
10K
6.21 mi12:17:4254:528:5027:35
8:53
+0:06
15K
9.32 mi12:48:481:25:589:1331:06
10:01
+1:08
20K
12.43 mi13:21:361:58:469:3332:48
10:33
+0:32
Half
13.11 mi13:28:032:05:139:336:27
9:27
-1:06
25K
15.53 mi13:52:412:29:519:3924:38
10:10
+0:43
30K
18.64 mi14:27:003:04:109:5334:19
11:03
+0:53
20M
20.00 mi14:44:073:21:1710:0417:07
12:36
+1:33
21M
21.00 mi14:58:453:35:5510:1714:38
14:38
+2:02
35K
21.75 mi15:06:223:43:3210:177:37
10:11
-4:27
23M
23.00 mi15:19:323:56:4210:1713:10
10:31
+0:20
24M
24.00 mi15:29:554:07:0510:1810:23
10:23
-0:08
40K
24.85 mi15:38:574:16:0710:189:02
10:34
+0:11
25.2M
25.20 mi15:43:034:20:1310:204:06
11:53
+1:19
Finish
26.22 mi15:53:004:30:1010:199:57
9:46
-2:07

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

8:47 /mi

Average Pace

10:19 /mi

Slowest Pace

14:38 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:01:19

23% of race

Time at Steady Pace

2:53:00

64% of race

Time at Slower Pace

35:51

13% of race

Average Pace: 10:18 /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 mi11:50:0727:178:4727:17
8:47
#21430
10K
6.21 mi12:17:4254:528:5027:35
8:53
#21612
15K
9.32 mi12:48:481:25:589:1331:06
10:01
#23195
20K
12.43 mi13:21:361:58:469:3332:48
10:33
#23896
Half
13.11 mi13:28:032:05:139:336:27
9:27
#23874
25K
15.53 mi13:52:412:29:519:3924:38
10:10
#23832
30K
18.64 mi14:27:003:04:109:5334:19
11:03
#23891
20M
20.00 mi14:44:073:21:1710:0417:07
12:36
#24160
21M
21.00 mi14:58:453:35:5510:1714:38
14:38
#24418
35K
21.75 mi15:06:223:43:3210:177:37
10:11
#24356
23M
23.00 mi15:19:323:56:4210:1713:10
10:31
#24225
24M
24.00 mi15:29:554:07:0510:1810:23
10:23
#24167
40K
24.85 mi15:38:574:16:0710:189:02
10:34
#24100
25.2M
25.20 mi15:43:034:20:1310:204:06
11:53
#24082
Finish
26.22 mi15:53:004:30:1010:199:57
9:46
#24032
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi214308323832325012(Top 88%)10217(Top 84%)10217(Top 187%)
10K6.21 mi3.10 mi21612-1828398-758398-7521820(Top 77%)8496(Top 69%)8496(Top 155%)
15K9.32 mi3.11 mi23195-15839237-8399237-83925012(Top 88%)10217(Top 84%)10217(Top 187%)
20K12.43 mi3.11 mi23896-7019637-4009637-40025291(Top 89%)10423(Top 85%)10423(Top 191%)
Half13.11 mi0.68 mi23874+229626+119626+1123467(Top 83%)9419(Top 77%)9419(Top 172%)
25K15.53 mi2.42 mi23832+429603+239603+2323642(Top 83%)9559(Top 78%)9559(Top 175%)
30K18.64 mi3.11 mi23891-599673-709673-7024085(Top 85%)9909(Top 81%)9909(Top 181%)
20M20.00 mi1.36 mi24160-2699843-1709843-17026012(Top 92%)11020(Top 90%)11020(Top 201%)
21M21.00 mi1.00 mi24418-2589990-1479990-14726845(Top 95%)11487(Top 94%)11487(Top 210%)
35K21.75 mi0.75 mi24356+629964+269964+2622409(Top 79%)9246(Top 76%)9246(Top 169%)
23M23.00 mi1.25 mi24225+1319917+479917+4722075(Top 78%)9111(Top 75%)9111(Top 167%)
24M24.00 mi1.00 mi24167+589906+119906+1122506(Top 79%)9400(Top 77%)9400(Top 172%)
40K24.85 mi0.85 mi24100+679883+239883+2322116(Top 78%)9266(Top 76%)9266(Top 169%)
25.2M25.20 mi0.35 mi24082+189878+59878+523031(Top 81%)9674(Top 79%)9674(Top 177%)
Finish26.22 mi1.02 mi24032+509860+189860+1822164(Top 78%)9251(Top 76%)9251(Top 169%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 88%
×21story building
+97ft-345ft

Overall

25012

Females

10217

F18-39

10217

5K→10K

3.1 - 6.2 mi

Top 77%
×5story building
+79ft-138ft

Overall

21820

Females

8496

F18-39

8496

10K→15K

6.2 - 9.3 mi

Top 88%
×3story building
+67ft-78ft

Overall

25012

Females

10217

F18-39

10217

15K→20K

9.3 - 12.4 mi

Top 89%
×5story building
+106ft-86ft

Overall

25291

Females

10423

F18-39

10423

20K→Half

12.4 - 13.1 mi

Top 83%
×2story building
+19ft-37ft

Overall

23467

Females

9419

F18-39

9419

Half→25K

13.1 - 15.5 mi

Top 83%
×4story building
+66ft-88ft

Overall

23642

Females

9559

F18-39

9559

25K→30K

15.5 - 18.6 mi

Top 85%
×9story building
+181ft-148ft

Overall

24085

Females

9909

F18-39

9909

30K→20M

18.6 - 20.0 mi

Top 92%
×5story building
+64ft-50ft

Overall

26012

Females

11020

F18-39

11020

20M→21M

20.0 - 21.0 mi

Top 95%
×8story building
+106ft-24ft

Overall

26845

Females

11487

F18-39

11487

21M→35K

21.0 - 21.8 mi

Top 79%
×7story building
+17ft-86ft

Overall

22409

Females

9246

F18-39

9246

35K→23M

21.8 - 23.0 mi

Top 78%
×5story building
+23ft-63ft

Overall

22075

Females

9111

F18-39

9111

23M→24M

23.0 - 24.0 mi

Top 79%
×6story building
+12ft-82ft

Overall

22506

Females

9400

F18-39

9400

24M→40K

24.0 - 24.9 mi

Top 78%
×1story
+6ft-20ft

Overall

22116

Females

9266

F18-39

9266

40K→25.2M

24.9 - 25.2 mi

Top 81%
×1story
+13ft-16ft

Overall

23031

Females

9674

F18-39

9674

25.2M→Finish

25.2 - 26.2 mi

Top 78%
×2story building
+22ft-21ft

Overall

22164

Females

9251

F18-39

9251

Passing Analysis

Category:
Athletes Passed
1040
Passed By
3642
Net Change
-2602
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21430
5K → 10K201383-182#21430#21612
10K → 15K171600-1583#21612#23195
15K → 20K29730-701#23195#23896
20K → Half308+22#23896#23874
Half → 25K13492+42#23874#23832
25K → 30K131190-59#23832#23891
30K → 20M28297-269#23891#24160
20M → 21M11269-258#24160#24418
21M → 35K708+62#24418#24356
35K → 23M14110+131#24356#24225
23M → 24M7214+58#24225#24167
24M → 40K8619+67#24167#24100
40K → 25.2M279+18#24100#24082
25.2M → Finish6313+50#24082#24032
TOTALS10403642-2602
📊

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