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BOSTON MARATHON 2025

Brennan Barrett

Bib: 27736•F

IN

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
29:00
Rank: #23660
Start → 5K
29:00 | 9:20/mi
10K· 6.21 mi
1:00:22
Rank: #24762 (-1102)
5K → 10K
31:22 | 10:06/mi
15K· 9.32 mi
1:32:33
Rank: #25118 (-356)
10K → 15K
32:11 | 10:22/mi
20K· 12.43 mi
2:07:46
Rank: #25571 (-453)
15K → 20K
35:13 | 11:20/mi
Half· 13.11 mi
2:15:44
Rank: #25698 (-127)
20K → Half
7:58 | 11:41/mi
25K· 15.53 mi
2:44:32
Rank: #25859 (-161)
Half → 25K
28:48 | 11:53/mi
30K· 18.64 mi
3:27:44
Rank: #26299 (-440)
25K → 30K
43:12 | 13:54/mi
20M
3:44:55
Rank: #26285 (+14)
30K → 20M
17:11 | 12:39/mi
21M
3:59:13
Rank: #26335 (-50)
20M → 21M
14:18 | 14:18/mi
35K· 21.75 mi
4:08:38
Rank: #26337 (-2)
21M → 35K
9:25 | 12:35/mi
23M
4:24:31
Rank: #26343 (-6)
35K → 23M
15:53 | 12:41/mi
24M
4:37:30
Rank: #26379 (-36)
23M → 24M
12:59 | 12:59/mi
40K· 24.85 mi
4:48:48
Rank: #26389 (-10)
24M → 40K
11:18 | 13:13/mi
25.2M
4:54:11
Rank: #26432 (-43)
40K → 25.2M
5:23 | 15:37/mi
Finish· 26.22 mi
5:06:25
Rank: #26471 (-39)
25.2M → Finish
12:14 | 12:00/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:15:44
Pace10:21 /mi
2nd Half
Distance13.11 mi
Time2:50:41
Pace13:01 /mi
📊Positive Split: 25.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:46:2029:009:2029:00
9:20
-
10K
6.21 mi12:17:421:00:229:4331:22
10:06
+0:46
15K
9.32 mi12:49:531:32:339:5632:11
10:22
+0:16
20K
12.43 mi13:25:062:07:4610:1735:13
11:20
+0:58
Half
13.11 mi13:33:042:15:4410:217:58
11:41
+0:21
25K
15.53 mi14:01:522:44:3210:3528:48
11:53
+0:12
30K
18.64 mi14:45:043:27:4411:0943:12
13:54
+2:01
20M
20.00 mi15:02:153:44:5511:1517:11
12:39
-1:15
21M
21.00 mi15:16:333:59:1311:2314:18
14:18
+1:39
35K
21.75 mi15:25:584:08:3811:269:25
12:35
-1:43
23M
23.00 mi15:41:514:24:3111:3015:53
12:41
+0:06
24M
24.00 mi15:54:504:37:3011:3412:59
12:59
+0:18
40K
24.85 mi16:06:084:48:4811:3711:18
13:13
+0:14
25.2M
25.20 mi16:11:314:54:1111:405:23
15:37
+2:24
Finish
26.22 mi16:23:455:06:2511:4212:14
12:00
-3:37

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

9:20 /mi

Average Pace

11:42 /mi

Slowest Pace

15:37 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:15:44

44% of race

Time at Steady Pace

1:47:48

35% of race

Time at Slower Pace

1:02:53

21% of race

Average Pace: 11:41 /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 mi11:46:2029:009:2029:00
9:20
#23660
10K
6.21 mi12:17:421:00:229:4331:22
10:06
#24762
15K
9.32 mi12:49:531:32:339:5632:11
10:22
#25118
20K
12.43 mi13:25:062:07:4610:1735:13
11:20
#25571
Half
13.11 mi13:33:042:15:4410:217:58
11:41
#25698
25K
15.53 mi14:01:522:44:3210:3528:48
11:53
#25859
30K
18.64 mi14:45:043:27:4411:0943:12
13:54
#26299
20M
20.00 mi15:02:153:44:5511:1517:11
12:39
#26285
21M
21.00 mi15:16:333:59:1311:2314:18
14:18
#26335
35K
21.75 mi15:25:584:08:3811:269:25
12:35
#26337
23M
23.00 mi15:41:514:24:3111:3015:53
12:41
#26343
24M
24.00 mi15:54:504:37:3011:3412:59
12:59
#26379
40K
24.85 mi16:06:084:48:4811:3711:18
13:13
#26389
25.2M
25.20 mi16:11:314:54:1111:405:23
15:37
#26432
Finish
26.22 mi16:23:455:06:2511:4212:14
12:00
#26471
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi236609512951225695(Top 90%)10616(Top 87%)10616(Top 194%)
10K6.21 mi3.10 mi24762-110210099-58710099-58725519(Top 90%)10536(Top 86%)10536(Top 193%)
15K9.32 mi3.11 mi25118-35610289-19010289-19025695(Top 90%)10616(Top 87%)10616(Top 194%)
20K12.43 mi3.11 mi25571-45310544-25510544-25526431(Top 93%)11053(Top 90%)11053(Top 202%)
Half13.11 mi0.68 mi25698-12710614-7010614-7027203(Top 96%)11530(Top 94%)11530(Top 211%)
25K15.53 mi2.42 mi25859-16110721-10710721-10726291(Top 93%)11020(Top 90%)11020(Top 201%)
30K18.64 mi3.11 mi26299-44010981-26010981-26027434(Top 97%)11738(Top 96%)11738(Top 215%)
20M20.00 mi1.36 mi26285+1410994-1310994-1326069(Top 92%)11049(Top 90%)11049(Top 202%)
21M21.00 mi1.00 mi26335-5011037-4311037-4326521(Top 93%)11324(Top 93%)11324(Top 207%)
35K21.75 mi0.75 mi26337-211050-1311050-1326545(Top 93%)11359(Top 93%)11359(Top 208%)
23M23.00 mi1.25 mi26343-611058-811058-826014(Top 92%)11098(Top 91%)11098(Top 203%)
24M24.00 mi1.00 mi26379-3611084-2611084-2626834(Top 94%)11548(Top 94%)11548(Top 211%)
40K24.85 mi0.85 mi26389-1011099-1511099-1526500(Top 93%)11387(Top 93%)11387(Top 208%)
25.2M25.20 mi0.35 mi26432-4311120-2111120-2127510(Top 97%)11893(Top 97%)11893(Top 217%)
Finish26.22 mi1.02 mi26471-3911149-2911149-2926789(Top 94%)11523(Top 94%)11523(Top 211%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 90%
×21stories
+97ft-345ft

Overall

25695

Females

10616

F18-39

10616

5K→10K

3.1 - 6.2 mi

Top 90%
×5stories
+79ft-138ft

Overall

25519

Females

10536

F18-39

10536

10K→15K

6.2 - 9.3 mi

Top 90%
×3stories
+67ft-78ft

Overall

25695

Females

10616

F18-39

10616

15K→20K

9.3 - 12.4 mi

Top 93%
×5stories
+106ft-86ft

Overall

26431

Females

11053

F18-39

11053

20K→Half

12.4 - 13.1 mi

Top 96%
×2stories
+19ft-37ft

Overall

27203

Females

11530

F18-39

11530

Half→25K

13.1 - 15.5 mi

Top 93%
×4stories
+66ft-88ft

Overall

26291

Females

11020

F18-39

11020

25K→30K

15.5 - 18.6 mi

Top 97%
×9stories
+181ft-148ft

Overall

27434

Females

11738

F18-39

11738

30K→20M

18.6 - 20.0 mi

Top 92%
×5stories
+64ft-50ft

Overall

26069

Females

11049

F18-39

11049

20M→21M

20.0 - 21.0 mi

Top 93%
×8stories
+106ft-24ft

Overall

26521

Females

11324

F18-39

11324

21M→35K

21.0 - 21.8 mi

Top 93%
×7stories
+17ft-86ft

Overall

26545

Females

11359

F18-39

11359

35K→23M

21.8 - 23.0 mi

Top 92%
×5stories
+23ft-63ft

Overall

26014

Females

11098

F18-39

11098

23M→24M

23.0 - 24.0 mi

Top 94%
×6stories
+12ft-82ft

Overall

26834

Females

11548

F18-39

11548

24M→40K

24.0 - 24.9 mi

Top 93%
×1story
+6ft-20ft

Overall

26500

Females

11387

F18-39

11387

40K→25.2M

24.9 - 25.2 mi

Top 97%
×1story
+13ft-16ft

Overall

27510

Females

11893

F18-39

11893

25.2M→Finish

25.2 - 26.2 mi

Top 94%
×2stories
+22ft-21ft

Overall

26789

Females

11523

F18-39

11523

Passing Analysis

Category:
Athletes Passed
373
Passed By
3184
Net Change
-2811
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23660
5K → 10K271129-1102#23660#24762
10K → 15K46402-356#24762#25118
15K → 20K25478-453#25118#25571
20K → Half1128-127#25571#25698
Half → 25K49210-161#25698#25859
25K → 30K19459-440#25859#26299
30K → 20M6349+14#26299#26285
20M → 21M2070-50#26285#26335
21M → 35K2527-2#26335#26337
35K → 23M3036-6#26337#26343
23M → 24M1652-36#26343#26379
24M → 40K3242-10#26379#26389
40K → 25.2M245-43#26389#26432
25.2M → Finish1857-39#26432#26471
TOTALS3733184-2811
📊

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