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BOSTON MARATHON 2025

Julia Mahony

Bib: 31364•F

CT

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
35:46
Rank: #28022
Start → 5K
35:46 | 11:31/mi
10K· 6.21 mi
1:14:13
Rank: #28104 (-82)
5K → 10K
38:27 | 12:23/mi
15K· 9.32 mi
1:52:27
Rank: #28029 (+75)
10K → 15K
38:14 | 12:18/mi
20K· 12.43 mi
2:31:49
Rank: #27961 (+68)
15K → 20K
39:22 | 12:40/mi
Half· 13.11 mi
2:40:01
Rank: #27932 (+29)
20K → Half
8:12 | 12:01/mi
25K· 15.53 mi
3:12:58
Rank: #27904 (+28)
Half → 25K
32:57 | 13:35/mi
30K· 18.64 mi
3:54:34
Rank: #27791 (+113)
25K → 30K
41:36 | 13:23/mi
20M
4:15:34
Rank: #27843 (-52)
30K → 20M
21:00 | 15:27/mi
21M
4:29:46
Rank: #27782 (+61)
20M → 21M
14:12 | 14:12/mi
35K· 21.75 mi
4:40:00
Rank: #27789 (-7)
21M → 35K
10:14 | 13:41/mi
23M
4:57:43
Rank: #27784 (+5)
35K → 23M
17:43 | 14:09/mi
24M
5:11:07
Rank: #27776 (+8)
23M → 24M
13:24 | 13:24/mi
40K· 24.85 mi
5:23:04
Rank: #27770 (+6)
24M → 40K
11:57 | 13:59/mi
25.2M
5:27:44
Rank: #27749 (+21)
40K → 25.2M
4:40 | 13:32/mi
Finish· 26.22 mi
5:39:00
Rank: #27699 (+50)
25.2M → Finish
11:16 | 11:03/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:40:01
Pace12:12 /mi
2nd Half
Distance13.11 mi
Time2:58:59
Pace13:39 /mi
📊Positive Split: 11.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:58:0235:4611:3135:46
11:31
-
10K
6.21 mi12:36:291:14:1311:5738:27
12:23
+0:52
15K
9.32 mi13:14:431:52:2712:0438:14
12:18
-0:05
20K
12.43 mi13:54:052:31:4912:1339:22
12:40
+0:22
Half
13.11 mi14:02:172:40:0112:128:12
12:01
-0:39
25K
15.53 mi14:35:143:12:5812:2532:57
13:35
+1:34
30K
18.64 mi15:16:503:54:3412:3541:36
13:23
-0:12
20M
20.00 mi15:37:504:15:3412:4721:00
15:27
+2:04
21M
21.00 mi15:52:024:29:4612:5114:12
14:12
-1:15
35K
21.75 mi16:02:164:40:0012:5210:14
13:41
-0:31
23M
23.00 mi16:19:594:57:4312:5717:43
14:09
+0:28
24M
24.00 mi16:33:235:11:0712:5813:24
13:24
-0:45
40K
24.85 mi16:45:205:23:0413:0011:57
13:59
+0:35
25.2M
25.20 mi16:50:005:27:4413:004:40
13:32
-0:27
Finish
26.22 mi17:01:165:39:0012:5611:16
11:03
-2:29

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

11:03 /mi

Average Pace

12:56 /mi

Slowest Pace

15:27 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:51:17

51% of race

Time at Steady Pace

1:42:51

30% of race

Time at Slower Pace

1:04:52

19% of race

Average Pace: 12:56 /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 mi11:58:0235:4611:3135:46
11:31
#28022
10K
6.21 mi12:36:291:14:1311:5738:27
12:23
#28104
15K
9.32 mi13:14:431:52:2712:0438:14
12:18
#28029
20K
12.43 mi13:54:052:31:4912:1339:22
12:40
#27961
Half
13.11 mi14:02:172:40:0112:128:12
12:01
#27932
25K
15.53 mi14:35:143:12:5812:2532:57
13:35
#27904
30K
18.64 mi15:16:503:54:3412:3541:36
13:23
#27791
20M
20.00 mi15:37:504:15:3412:4721:00
15:27
#27843
21M
21.00 mi15:52:024:29:4612:5114:12
14:12
#27782
35K
21.75 mi16:02:164:40:0012:5210:14
13:41
#27789
23M
23.00 mi16:19:594:57:4312:5717:43
14:09
#27784
24M
24.00 mi16:33:235:11:0712:5813:24
13:24
#27776
40K
24.85 mi16:45:205:23:0413:0011:57
13:59
#27770
25.2M
25.20 mi16:50:005:27:4413:004:40
13:32
#27749
Finish
26.22 mi17:01:165:39:0012:5611:16
11:03
#27699
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi28022119761197627827(Top 98%)11874(Top 97%)11874(Top 217%)
10K6.21 mi3.10 mi28104-8212033-5712033-5728131(Top 99%)12059(Top 99%)12059(Top 220%)
15K9.32 mi3.11 mi28029+7511985+4811985+4827827(Top 98%)11874(Top 97%)11874(Top 217%)
20K12.43 mi3.11 mi27961+6811947+3811947+3827639(Top 97%)11781(Top 96%)11781(Top 215%)
Half13.11 mi0.68 mi27932+2911933+1411933+1427466(Top 97%)11698(Top 96%)11698(Top 214%)
25K15.53 mi2.42 mi27904+2811921+1211921+1227664(Top 97%)11807(Top 97%)11807(Top 216%)
30K18.64 mi3.11 mi27791+11311861+6011861+6027044(Top 95%)11521(Top 94%)11521(Top 211%)
20M20.00 mi1.36 mi27843-5211901-4011901-4028036(Top 99%)12074(Top 99%)12074(Top 221%)
21M21.00 mi1.00 mi27782+6111869+3211869+3226441(Top 93%)11280(Top 92%)11280(Top 206%)
35K21.75 mi0.75 mi27789-711880-1111880-1127471(Top 97%)11838(Top 97%)11838(Top 216%)
23M23.00 mi1.25 mi27784+511879+111879+127433(Top 97%)11824(Top 97%)11824(Top 216%)
24M24.00 mi1.00 mi27776+811884-511884-527233(Top 96%)11771(Top 96%)11771(Top 215%)
40K24.85 mi0.85 mi27770+611886-211886-227154(Top 96%)11720(Top 96%)11720(Top 214%)
25.2M25.20 mi0.35 mi27749+2111877+911877+925696(Top 90%)11049(Top 90%)11049(Top 202%)
Finish26.22 mi1.02 mi27699+5011856+2111856+2125467(Top 90%)10899(Top 89%)10899(Top 199%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 98%
×21stories
+97ft-345ft

Overall

27827

Females

11874

F18-39

11874

5K→10K

3.1 - 6.2 mi

Top 99%
×5stories
+79ft-138ft

Overall

28131

Females

12059

F18-39

12059

10K→15K

6.2 - 9.3 mi

Top 98%
×3stories
+67ft-78ft

Overall

27827

Females

11874

F18-39

11874

15K→20K

9.3 - 12.4 mi

Top 97%
×5stories
+106ft-86ft

Overall

27639

Females

11781

F18-39

11781

20K→Half

12.4 - 13.1 mi

Top 97%
×2stories
+19ft-37ft

Overall

27466

Females

11698

F18-39

11698

Half→25K

13.1 - 15.5 mi

Top 97%
×4stories
+66ft-88ft

Overall

27664

Females

11807

F18-39

11807

25K→30K

15.5 - 18.6 mi

Top 95%
×9stories
+181ft-148ft

Overall

27044

Females

11521

F18-39

11521

30K→20M

18.6 - 20.0 mi

Top 99%
×5stories
+64ft-50ft

Overall

28036

Females

12074

F18-39

12074

20M→21M

20.0 - 21.0 mi

Top 93%
×8stories
+106ft-24ft

Overall

26441

Females

11280

F18-39

11280

21M→35K

21.0 - 21.8 mi

Top 97%
×7stories
+17ft-86ft

Overall

27471

Females

11838

F18-39

11838

35K→23M

21.8 - 23.0 mi

Top 97%
×5stories
+23ft-63ft

Overall

27433

Females

11824

F18-39

11824

23M→24M

23.0 - 24.0 mi

Top 96%
×6stories
+12ft-82ft

Overall

27233

Females

11771

F18-39

11771

24M→40K

24.0 - 24.9 mi

Top 96%
×1story
+6ft-20ft

Overall

27154

Females

11720

F18-39

11720

40K→25.2M

24.9 - 25.2 mi

Top 90%
×1story
+13ft-16ft

Overall

25696

Females

11049

F18-39

11049

25.2M→Finish

25.2 - 26.2 mi

Top 90%
×2stories
+22ft-21ft

Overall

25467

Females

10899

F18-39

10899

Passing Analysis

Category:
Athletes Passed
642
Passed By
319
Net Change
+323
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#28022
5K → 10K38120-82#28022#28104
10K → 15K9419+75#28104#28029
15K → 20K779+68#28029#27961
20K → Half312+29#27961#27932
Half → 25K5830+28#27932#27904
25K → 30K12310+113#27904#27791
30K → 20M1567-52#27791#27843
20M → 21M654+61#27843#27782
21M → 35K1017-7#27782#27789
35K → 23M2419+5#27789#27784
23M → 24M2012+8#27784#27776
24M → 40K137+6#27776#27770
40K → 25.2M243+21#27770#27749
25.2M → Finish500+50#27749#27699
TOTALS642319+323
📊

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