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BOSTON MARATHON 2025

Brianna Adams

Bib: 21172•F

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Top 47%
Division (F45-49)
#0 / 1813
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:53
Rank: #18927
Start → 5K
25:53 | 8:20/mi
10K· 6.21 mi
51:55
Rank: #18961 (-34)
5K → 10K
26:02 | 8:23/mi
15K· 9.32 mi
1:18:27
Rank: #19137 (-176)
10K → 15K
26:32 | 8:32/mi
20K· 12.43 mi
1:45:23
Rank: #19148 (-11)
15K → 20K
26:56 | 8:40/mi
Half· 13.11 mi
1:51:13
Rank: #19155 (-7)
20K → Half
5:50 | 8:33/mi
25K· 15.53 mi
2:12:50
Rank: #19207 (-52)
Half → 25K
21:37 | 8:55/mi
30K· 18.64 mi
2:41:59
Rank: #19279 (-72)
25K → 30K
29:09 | 9:23/mi
20M
2:54:46
Rank: #19226 (+53)
30K → 20M
12:47 | 9:24/mi
21M
3:04:33
Rank: #19112 (+114)
20M → 21M
9:47 | 9:47/mi
35K· 21.75 mi
3:10:49
Rank: #18965 (+147)
21M → 35K
6:16 | 8:23/mi
23M
3:22:06
Rank: #18798 (+167)
35K → 23M
11:17 | 9:01/mi
24M
3:31:06
Rank: #18748 (+50)
23M → 24M
9:00 | 9:00/mi
40K· 24.85 mi
3:38:54
Rank: #18653 (+95)
24M → 40K
7:48 | 9:07/mi
25.2M
3:42:12
Rank: #18593 (+60)
40K → 25.2M
3:18 | 9:34/mi
Finish· 26.22 mi
3:50:55
Rank: #18528 (+65)
25.2M → Finish
8:43 | 8:33/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:51:13
Pace8:29 /mi
2nd Half
Distance13.11 mi
Time1:59:42
Pace9:08 /mi
📊Positive Split: 7.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:21:0925:538:2025:53
8:20
-
10K
6.21 mi11:47:1151:558:2126:02
8:23
+0:03
15K
9.32 mi12:13:431:18:278:2526:32
8:32
+0:09
20K
12.43 mi12:40:391:45:238:2926:56
8:40
+0:08
Half
13.11 mi12:46:291:51:138:295:50
8:33
-0:07
25K
15.53 mi13:08:062:12:508:3321:37
8:55
+0:22
30K
18.64 mi13:37:152:41:598:4129:09
9:23
+0:28
20M
20.00 mi13:50:022:54:468:4412:47
9:24
+0:01
21M
21.00 mi13:59:493:04:338:479:47
9:47
+0:23
35K
21.75 mi14:06:053:10:498:466:16
8:23
-1:24
23M
23.00 mi14:17:223:22:068:4711:17
9:01
+0:38
24M
24.00 mi14:26:223:31:068:489:00
9:00
-0:01
40K
24.85 mi14:34:103:38:548:487:48
9:07
+0:07
25.2M
25.20 mi14:37:283:42:128:493:18
9:34
+0:27
Finish
26.22 mi14:46:113:50:558:498:43
8:33
-1:01

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

8:20 /mi

Average Pace

8:49 /mi

Slowest Pace

9:47 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:55:54

76% of race

Time at Steady Pace

55:01

24% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:48 /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 mi11:21:0925:538:2025:53
8:20
#18927
10K
6.21 mi11:47:1151:558:2126:02
8:23
#18961
15K
9.32 mi12:13:431:18:278:2526:32
8:32
#19137
20K
12.43 mi12:40:391:45:238:2926:56
8:40
#19148
Half
13.11 mi12:46:291:51:138:295:50
8:33
#19155
25K
15.53 mi13:08:062:12:508:3321:37
8:55
#19207
30K
18.64 mi13:37:152:41:598:4129:09
9:23
#19279
20M
20.00 mi13:50:022:54:468:4412:47
9:24
#19226
21M
21.00 mi13:59:493:04:338:479:47
9:47
#19112
35K
21.75 mi14:06:053:10:498:466:16
8:23
#18965
23M
23.00 mi14:17:223:22:068:4711:17
9:01
#18798
24M
24.00 mi14:26:223:31:068:489:00
9:00
#18748
40K
24.85 mi14:34:103:38:548:487:48
9:07
#18653
25.2M
25.20 mi14:37:283:42:128:493:18
9:34
#18593
Finish
26.22 mi14:46:113:50:558:498:43
8:33
#18528
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi189276870687019583(Top 69%)7214(Top 59%)7214(Top 398%)
10K6.21 mi3.10 mi18961-346882-126882-1219077(Top 67%)6928(Top 57%)6928(Top 382%)
15K9.32 mi3.11 mi19137-1766979-976979-9719583(Top 69%)7214(Top 59%)7214(Top 398%)
20K12.43 mi3.11 mi19148-116988-96988-919263(Top 68%)7059(Top 58%)7059(Top 389%)
Half13.11 mi0.68 mi19155-76993-56993-519551(Top 69%)7207(Top 59%)7207(Top 398%)
25K15.53 mi2.42 mi19207-527032-397032-3919500(Top 69%)7258(Top 59%)7258(Top 400%)
30K18.64 mi3.11 mi19279-727115-837115-8319469(Top 69%)7375(Top 60%)7375(Top 407%)
20M20.00 mi1.36 mi19226+537110+57110+518783(Top 66%)7150(Top 58%)7150(Top 394%)
21M21.00 mi1.00 mi19112+1147060+507060+5017429(Top 61%)6499(Top 53%)6499(Top 358%)
35K21.75 mi0.75 mi18965+1477004+567004+5614787(Top 52%)5136(Top 42%)5136(Top 283%)
23M23.00 mi1.25 mi18798+1676936+686936+6816363(Top 58%)6100(Top 50%)6100(Top 336%)
24M24.00 mi1.00 mi18748+506930+66930+617394(Top 61%)6707(Top 55%)6707(Top 370%)
40K24.85 mi0.85 mi18653+956902+286902+2817007(Top 60%)6590(Top 54%)6590(Top 363%)
25.2M25.20 mi0.35 mi18593+606885+176885+1715043(Top 53%)5590(Top 46%)5590(Top 308%)
Finish26.22 mi1.02 mi18528+656865+206865+2016608(Top 58%)6366(Top 52%)6366(Top 351%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 69%
×21stories
+97ft-345ft

Overall

19583

Females

7214

F45-49

7214

5K→10K

3.1 - 6.2 mi

Top 67%
×5stories
+79ft-138ft

Overall

19077

Females

6928

F45-49

6928

10K→15K

6.2 - 9.3 mi

Top 69%
×3stories
+67ft-78ft

Overall

19583

Females

7214

F45-49

7214

15K→20K

9.3 - 12.4 mi

Top 68%
×5stories
+106ft-86ft

Overall

19263

Females

7059

F45-49

7059

20K→Half

12.4 - 13.1 mi

Top 69%
×2stories
+19ft-37ft

Overall

19551

Females

7207

F45-49

7207

Half→25K

13.1 - 15.5 mi

Top 69%
×4stories
+66ft-88ft

Overall

19500

Females

7258

F45-49

7258

25K→30K

15.5 - 18.6 mi

Top 69%
×9stories
+181ft-148ft

Overall

19469

Females

7375

F45-49

7375

30K→20M

18.6 - 20.0 mi

Top 66%
×5stories
+64ft-50ft

Overall

18783

Females

7150

F45-49

7150

20M→21M

20.0 - 21.0 mi

Top 61%
×8stories
+106ft-24ft

Overall

17429

Females

6499

F45-49

6499

21M→35K

21.0 - 21.8 mi

Top 52%
×7stories
+17ft-86ft

Overall

14787

Females

5136

F45-49

5136

35K→23M

21.8 - 23.0 mi

Top 58%
×5stories
+23ft-63ft

Overall

16363

Females

6100

F45-49

6100

23M→24M

23.0 - 24.0 mi

Top 61%
×6stories
+12ft-82ft

Overall

17394

Females

6707

F45-49

6707

24M→40K

24.0 - 24.9 mi

Top 60%
×1story
+6ft-20ft

Overall

17007

Females

6590

F45-49

6590

40K→25.2M

24.9 - 25.2 mi

Top 53%
×1story
+13ft-16ft

Overall

15043

Females

5590

F45-49

5590

25.2M→Finish

25.2 - 26.2 mi

Top 58%
×2stories
+22ft-21ft

Overall

16608

Females

6366

F45-49

6366

Passing Analysis

Category:
Athletes Passed
1941
Passed By
1542
Net Change
+399
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18927
5K → 10K238272-34#18927#18961
10K → 15K135311-176#18961#19137
15K → 20K186197-11#19137#19148
20K → Half3340-7#19148#19155
Half → 25K157209-52#19155#19207
25K → 30K197269-72#19207#19279
30K → 20M12572+53#19279#19226
20M → 21M15541+114#19226#19112
21M → 35K1525+147#19112#18965
35K → 23M19124+167#18965#18798
23M → 24M8939+50#18798#18748
24M → 40K12227+95#18748#18653
40K → 25.2M655+60#18653#18593
25.2M → Finish9631+65#18593#18528
TOTALS19411542+399
📊

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