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BOSTON MARATHON 2025

Jamie Brenner

Bib: 27673•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
33:05
Rank: #27045
Start → 5K
33:05 | 10:39/mi
10K· 6.21 mi
1:07:25
Rank: #27115 (-70)
5K → 10K
34:20 | 11:03/mi
15K· 9.32 mi
1:40:55
Rank: #26834 (+281)
10K → 15K
33:30 | 10:47/mi
20K· 12.43 mi
2:18:08
Rank: #26943 (-109)
15K → 20K
37:13 | 11:59/mi
Half· 13.11 mi
2:26:01
Rank: #26948 (-5)
20K → Half
7:53 | 11:33/mi
25K· 15.53 mi
2:57:09
Rank: #27015 (-67)
Half → 25K
31:08 | 12:50/mi
30K· 18.64 mi
3:41:15
Rank: #27160 (-145)
25K → 30K
44:06 | 14:12/mi
20M
3:59:10
Rank: #27138 (+22)
30K → 20M
17:55 | 13:11/mi
21M
4:12:17
Rank: #27085 (+53)
20M → 21M
13:07 | 13:07/mi
35K· 21.75 mi
4:21:12
Rank: #27050 (+35)
21M → 35K
8:55 | 11:55/mi
23M
4:36:22
Rank: #26997 (+53)
35K → 23M
15:10 | 12:07/mi
24M
4:48:14
Rank: #26945 (+52)
23M → 24M
11:52 | 11:52/mi
40K· 24.85 mi
4:58:35
Rank: #26880 (+65)
24M → 40K
10:21 | 12:06/mi
25.2M
5:03:29
Rank: #26876 (+4)
40K → 25.2M
4:54 | 14:13/mi
Finish· 26.22 mi
5:15:07
Rank: #26851 (+25)
25.2M → Finish
11:38 | 11:25/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:26:01
Pace11:08 /mi
2nd Half
Distance13.11 mi
Time2:49:06
Pace12:54 /mi
📊Positive Split: 15.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:49:4033:0510:3933:05
10:39
-
10K
6.21 mi12:24:001:07:2510:5134:20
11:03
+0:24
15K
9.32 mi12:57:301:40:5510:5033:30
10:47
-0:16
20K
12.43 mi13:34:432:18:0811:0737:13
11:59
+1:12
Half
13.11 mi13:42:362:26:0111:087:53
11:33
-0:26
25K
15.53 mi14:13:442:57:0911:2431:08
12:50
+1:17
30K
18.64 mi14:57:503:41:1511:5244:06
14:12
+1:22
20M
20.00 mi15:15:453:59:1011:5717:55
13:11
-1:01
21M
21.00 mi15:28:524:12:1712:0113:07
13:07
-0:04
35K
21.75 mi15:37:474:21:1212:018:55
11:55
-1:12
23M
23.00 mi15:52:574:36:2212:0115:10
12:07
+0:12
24M
24.00 mi16:04:494:48:1412:0111:52
11:52
-0:15
40K
24.85 mi16:15:104:58:3512:0110:21
12:06
+0:14
25.2M
25.20 mi16:20:045:03:2912:034:54
14:13
+2:07
Finish
26.22 mi16:31:425:15:0712:0211:38
11:25
-2:48

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

10:39 /mi

Average Pace

12:02 /mi

Slowest Pace

14:13 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:52:33

36% of race

Time at Steady Pace

1:31:24

29% of race

Time at Slower Pace

1:51:10

35% of race

Average Pace: 12:01 /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 mi11:49:4033:0510:3933:05
10:39
#27045
10K
6.21 mi12:24:001:07:2510:5134:20
11:03
#27115
15K
9.32 mi12:57:301:40:5510:5033:30
10:47
#26834
20K
12.43 mi13:34:432:18:0811:0737:13
11:59
#26943
Half
13.11 mi13:42:362:26:0111:087:53
11:33
#26948
25K
15.53 mi14:13:442:57:0911:2431:08
12:50
#27015
30K
18.64 mi14:57:503:41:1511:5244:06
14:12
#27160
20M
20.00 mi15:15:453:59:1011:5717:55
13:11
#27138
21M
21.00 mi15:28:524:12:1712:0113:07
13:07
#27085
35K
21.75 mi15:37:474:21:1212:018:55
11:55
#27050
23M
23.00 mi15:52:574:36:2212:0115:10
12:07
#26997
24M
24.00 mi16:04:494:48:1412:0111:52
11:52
#26945
40K
24.85 mi16:15:104:58:3512:0110:21
12:06
#26880
25.2M
25.20 mi16:20:045:03:2912:034:54
14:13
#26876
Finish
26.22 mi16:31:425:15:0712:0211:38
11:25
#26851
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi27045113521135226377(Top 93%)10992(Top 90%)10992(Top 201%)
10K6.21 mi3.10 mi27115-7011423-7111423-7127131(Top 96%)11439(Top 94%)11439(Top 209%)
15K9.32 mi3.11 mi26834+28111255+16811255+16826377(Top 93%)10992(Top 90%)10992(Top 201%)
20K12.43 mi3.11 mi26943-10911333-7811333-7827101(Top 95%)11457(Top 94%)11457(Top 209%)
Half13.11 mi0.68 mi26948-511342-911342-927104(Top 95%)11477(Top 94%)11477(Top 210%)
25K15.53 mi2.42 mi27015-6711391-4911391-4927188(Top 96%)11539(Top 94%)11539(Top 211%)
30K18.64 mi3.11 mi27160-14511496-10511496-10527650(Top 97%)11864(Top 97%)11864(Top 217%)
20M20.00 mi1.36 mi27138+2211488+811488+826619(Top 94%)11349(Top 93%)11349(Top 208%)
21M21.00 mi1.00 mi27085+5311467+2111467+2125199(Top 89%)10670(Top 87%)10670(Top 195%)
35K21.75 mi0.75 mi27050+3511450+1711450+1725735(Top 91%)10974(Top 90%)10974(Top 201%)
23M23.00 mi1.25 mi26997+5311423+2711423+2725278(Top 89%)10751(Top 88%)10751(Top 197%)
24M24.00 mi1.00 mi26945+5211397+2611397+2625499(Top 90%)10878(Top 89%)10878(Top 199%)
40K24.85 mi0.85 mi26880+6511375+2211375+2225075(Top 88%)10711(Top 88%)10711(Top 196%)
25.2M25.20 mi0.35 mi26876+411374+111374+126479(Top 93%)11432(Top 93%)11432(Top 209%)
Finish26.22 mi1.02 mi26851+2511369+511369+526015(Top 92%)11157(Top 91%)11157(Top 204%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 93%
×21stories
+97ft-345ft

Overall

26377

Females

10992

F18-39

10992

5K→10K

3.1 - 6.2 mi

Top 96%
×5stories
+79ft-138ft

Overall

27131

Females

11439

F18-39

11439

10K→15K

6.2 - 9.3 mi

Top 93%
×3stories
+67ft-78ft

Overall

26377

Females

10992

F18-39

10992

15K→20K

9.3 - 12.4 mi

Top 95%
×5stories
+106ft-86ft

Overall

27101

Females

11457

F18-39

11457

20K→Half

12.4 - 13.1 mi

Top 95%
×2stories
+19ft-37ft

Overall

27104

Females

11477

F18-39

11477

Half→25K

13.1 - 15.5 mi

Top 96%
×4stories
+66ft-88ft

Overall

27188

Females

11539

F18-39

11539

25K→30K

15.5 - 18.6 mi

Top 97%
×9stories
+181ft-148ft

Overall

27650

Females

11864

F18-39

11864

30K→20M

18.6 - 20.0 mi

Top 94%
×5stories
+64ft-50ft

Overall

26619

Females

11349

F18-39

11349

20M→21M

20.0 - 21.0 mi

Top 89%
×8stories
+106ft-24ft

Overall

25199

Females

10670

F18-39

10670

21M→35K

21.0 - 21.8 mi

Top 91%
×7stories
+17ft-86ft

Overall

25735

Females

10974

F18-39

10974

35K→23M

21.8 - 23.0 mi

Top 89%
×5stories
+23ft-63ft

Overall

25278

Females

10751

F18-39

10751

23M→24M

23.0 - 24.0 mi

Top 90%
×6stories
+12ft-82ft

Overall

25499

Females

10878

F18-39

10878

24M→40K

24.0 - 24.9 mi

Top 88%
×1story
+6ft-20ft

Overall

25075

Females

10711

F18-39

10711

40K→25.2M

24.9 - 25.2 mi

Top 93%
×1story
+13ft-16ft

Overall

26479

Females

11432

F18-39

11432

25.2M→Finish

25.2 - 26.2 mi

Top 92%
×2stories
+22ft-21ft

Overall

26015

Females

11157

F18-39

11157

Passing Analysis

Category:
Athletes Passed
947
Passed By
753
Net Change
+194
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#27045
5K → 10K116186-70#27045#27115
10K → 15K29817+281#27115#26834
15K → 20K70179-109#26834#26943
20K → Half1823-5#26943#26948
Half → 25K45112-67#26948#27015
25K → 30K35180-145#27015#27160
30K → 20M4523+22#27160#27138
20M → 21M563+53#27138#27085
21M → 35K383+35#27085#27050
35K → 23M563+53#27050#26997
23M → 24M564+52#26997#26945
24M → 40K683+65#26945#26880
40K → 25.2M106+4#26880#26876
25.2M → Finish3611+25#26876#26851
TOTALS947753+194
📊

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