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BOSTON MARATHON 2025

Brianna Kauk

Bib: 13658•F

CA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 41%
Gender (Female)
#0 / 12228
Top 25%
Division (F18-39)
#0 / 5469
Top 42%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:47
Rank: #13574
Start → 5K
23:47 | 7:39/mi
10K· 6.21 mi
47:20
Rank: #13200 (+374)
5K → 10K
23:33 | 7:35/mi
15K· 9.32 mi
1:10:45
Rank: #12789 (+411)
10K → 15K
23:25 | 7:32/mi
20K· 12.43 mi
1:34:23
Rank: #12450 (+339)
15K → 20K
23:38 | 7:36/mi
Half· 13.11 mi
1:39:32
Rank: #12433 (+17)
20K → Half
5:09 | 7:33/mi
25K· 15.53 mi
1:58:09
Rank: #12241 (+192)
Half → 25K
18:37 | 7:41/mi
30K· 18.64 mi
2:23:28
Rank: #12235 (+6)
25K → 30K
25:19 | 8:09/mi
20M
2:34:30
Rank: #12114 (+121)
30K → 20M
11:02 | 8:07/mi
21M
2:43:10
Rank: #12058 (+56)
20M → 21M
8:40 | 8:40/mi
35K· 21.75 mi
2:48:48
Rank: #11909 (+149)
21M → 35K
5:38 | 7:32/mi
23M
2:59:02
Rank: #11843 (+66)
35K → 23M
10:14 | 8:10/mi
24M
3:06:54
Rank: #11756 (+87)
23M → 24M
7:52 | 7:52/mi
40K· 24.85 mi
3:13:45
Rank: #11654 (+102)
24M → 40K
6:51 | 8:01/mi
25.2M
3:16:53
Rank: #11656 (-2)
40K → 25.2M
3:08 | 9:05/mi
Finish· 26.22 mi
3:24:44
Rank: #11597 (+59)
25.2M → Finish
7:51 | 7:42/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:39:32
Pace7:36 /mi
2nd Half
Distance13.11 mi
Time1:45:12
Pace8:01 /mi
📊Positive Split: 5.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:13:5423:477:3923:47
7:39
-
10K
6.21 mi11:37:2747:207:3723:33
7:35
-0:04
15K
9.32 mi12:00:521:10:457:3523:25
7:32
-0:03
20K
12.43 mi12:24:301:34:237:3623:38
7:36
+0:04
Half
13.11 mi12:29:391:39:327:365:09
7:33
-0:03
25K
15.53 mi12:48:161:58:097:3618:37
7:41
+0:08
30K
18.64 mi13:13:352:23:287:4225:19
8:09
+0:28
20M
20.00 mi13:24:372:34:307:4311:02
8:07
-0:02
21M
21.00 mi13:33:172:43:107:468:40
8:40
+0:33
35K
21.75 mi13:38:552:48:487:465:38
7:32
-1:08
23M
23.00 mi13:49:092:59:027:4710:14
8:10
+0:38
24M
24.00 mi13:57:013:06:547:477:52
7:52
-0:18
40K
24.85 mi14:03:523:13:457:486:51
8:01
+0:09
25.2M
25.20 mi14:07:003:16:537:493:08
9:05
+1:04
Finish
26.22 mi14:14:513:24:447:497:51
7:42
-1:23

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

7:32 /mi

Average Pace

7:49 /mi

Slowest Pace

9:05 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

2:19:30

68% of race

Time at Slower Pace

1:05:14

32% of race

Average Pace: 7:48 /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 mi11:13:5423:477:3923:47
7:39
#13574
10K
6.21 mi11:37:2747:207:3723:33
7:35
#13200
15K
9.32 mi12:00:521:10:457:3523:25
7:32
#12789
20K
12.43 mi12:24:301:34:237:3623:38
7:36
#12450
Half
13.11 mi12:29:391:39:327:365:09
7:33
#12433
25K
15.53 mi12:48:161:58:097:3618:37
7:41
#12241
30K
18.64 mi13:13:352:23:287:4225:19
8:09
#12235
20M
20.00 mi13:24:372:34:307:4311:02
8:07
#12114
21M
21.00 mi13:33:172:43:107:468:40
8:40
#12058
35K
21.75 mi13:38:552:48:487:465:38
7:32
#11909
23M
23.00 mi13:49:092:59:027:4710:14
8:10
#11843
24M
24.00 mi13:57:013:06:547:477:52
7:52
#11756
40K
24.85 mi14:03:523:13:457:486:51
8:01
#11654
25.2M
25.20 mi14:07:003:16:537:493:08
9:05
#11656
Finish
26.22 mi14:14:513:24:447:497:51
7:42
#11597
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi135743638363812098(Top 43%)2956(Top 24%)2956(Top 54%)
10K6.21 mi3.10 mi13200+3743461+1773461+17712854(Top 45%)3285(Top 27%)3285(Top 60%)
15K9.32 mi3.11 mi12789+4113263+1983263+19812098(Top 43%)2956(Top 24%)2956(Top 54%)
20K12.43 mi3.11 mi12450+3393116+1473116+14711669(Top 41%)2819(Top 23%)2819(Top 52%)
Half13.11 mi0.68 mi12433+173113+33113+312194(Top 43%)3055(Top 25%)3055(Top 56%)
25K15.53 mi2.42 mi12241+1923042+713042+7111394(Top 40%)2798(Top 23%)2798(Top 51%)
30K18.64 mi3.11 mi12235+63120-783120-7812432(Top 44%)3517(Top 29%)3517(Top 64%)
20M20.00 mi1.36 mi12114+1213093+273093+2711264(Top 40%)3069(Top 25%)3069(Top 56%)
21M21.00 mi1.00 mi12058+563102-93102-911492(Top 40%)3347(Top 27%)3347(Top 61%)
35K21.75 mi0.75 mi11909+1493046+563046+568908(Top 31%)2102(Top 17%)2102(Top 38%)
23M23.00 mi1.25 mi11843+663056-103056-1011215(Top 39%)3332(Top 27%)3332(Top 61%)
24M24.00 mi1.00 mi11756+873053+33053+310352(Top 36%)2974(Top 24%)2974(Top 54%)
40K24.85 mi0.85 mi11654+1023026+273026+2710333(Top 36%)3097(Top 25%)3097(Top 57%)
25.2M25.20 mi0.35 mi11656-23040-143040-1412312(Top 43%)4111(Top 34%)4111(Top 75%)
Finish26.22 mi1.02 mi11597+593054-143054-1410748(Top 38%)3342(Top 27%)3342(Top 61%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 43%
×21stories
+97ft-345ft

Overall

12098

Females

2956

F18-39

2956

5K→10K

3.1 - 6.2 mi

Top 45%
×5stories
+79ft-138ft

Overall

12854

Females

3285

F18-39

3285

10K→15K

6.2 - 9.3 mi

Top 43%
×3stories
+67ft-78ft

Overall

12098

Females

2956

F18-39

2956

15K→20K

9.3 - 12.4 mi

Top 41%
×5stories
+106ft-86ft

Overall

11669

Females

2819

F18-39

2819

20K→Half

12.4 - 13.1 mi

Top 43%
×2stories
+19ft-37ft

Overall

12194

Females

3055

F18-39

3055

Half→25K

13.1 - 15.5 mi

Top 40%
×4stories
+66ft-88ft

Overall

11394

Females

2798

F18-39

2798

25K→30K

15.5 - 18.6 mi

Top 44%
×9stories
+181ft-148ft

Overall

12432

Females

3517

F18-39

3517

30K→20M

18.6 - 20.0 mi

Top 40%
×5stories
+64ft-50ft

Overall

11264

Females

3069

F18-39

3069

20M→21M

20.0 - 21.0 mi

Top 40%
×8stories
+106ft-24ft

Overall

11492

Females

3347

F18-39

3347

21M→35K

21.0 - 21.8 mi

Top 31%
×7stories
+17ft-86ft

Overall

8908

Females

2102

F18-39

2102

35K→23M

21.8 - 23.0 mi

Top 39%
×5stories
+23ft-63ft

Overall

11215

Females

3332

F18-39

3332

23M→24M

23.0 - 24.0 mi

Top 36%
×6stories
+12ft-82ft

Overall

10352

Females

2974

F18-39

2974

24M→40K

24.0 - 24.9 mi

Top 36%
×1story
+6ft-20ft

Overall

10333

Females

3097

F18-39

3097

40K→25.2M

24.9 - 25.2 mi

Top 43%
×1story
+13ft-16ft

Overall

12312

Females

4111

F18-39

4111

25.2M→Finish

25.2 - 26.2 mi

Top 38%
×2stories
+22ft-21ft

Overall

10748

Females

3342

F18-39

3342

Passing Analysis

Category:
Athletes Passed
2892
Passed By
915
Net Change
+1977
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13574
5K → 10K503129+374#13574#13200
10K → 15K46958+411#13200#12789
15K → 20K38950+339#12789#12450
20K → Half3720+17#12450#12433
Half → 25K25260+192#12433#12241
25K → 30K250244+6#12241#12235
30K → 20M17655+121#12235#12114
20M → 21M12670+56#12114#12058
21M → 35K1545+149#12058#11909
35K → 23M14074+66#11909#11843
23M → 24M11528+87#11843#11756
24M → 40K13129+102#11756#11654
40K → 25.2M2931-2#11654#11656
25.2M → Finish12162+59#11656#11597
TOTALS2892915+1977
📊

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