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BOSTON MARATHON 2025

Lisa Brennan

Bib: 13042•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 41%
Gender (Female)
#0 / 12228
Top 25%
Masters (Masters Women)
#0 / 6759
Top 11%
Division (F40-44)
#0 / 1718
Top 24%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
7:36/mi
23:38
↑ 97↓ 3451.5%
10K· 6.21 mi
7:41/mi
47:29
↑ 79↓ 1380.4%
15K· 9.32 mi
7:40/mi
1:11:17
↑ 67↓ 78
20K· 12.43 mi
7:46/mi
1:35:25
↑ 106↓ 860.1%
Half· 13.11 mi
7:45/mi
1:40:42
↑ 19↓ 370.5%
25K· 15.53 mi
7:51/mi
1:59:43
↑ 66↓ 880.2%
30K· 18.64 mi
8:02/mi
2:24:39
↑ 181↓ 1480.2%
20M
8:05/mi
2:35:38
↑ 64↓ 500.2%
21M
8:29/mi
2:44:07
↑ 106↓ 241.6%
35K· 21.75 mi
7:48/mi
2:49:57
↑ 17↓ 861.7%
23M
8:02/mi
3:00:01
↑ 23↓ 630.6%
24M
7:47/mi
3:07:48
↓ 821.3%
40K· 24.85 mi
7:56/mi
3:14:35
↓ 200.3%
25.2M
8:30/mi
3:17:31
↑ 13↓ 160.2%
Finish· 26.22 mi
7:18/mi
3:24:57
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:40:42
Pace7:41 /mi
2nd Half
Distance13.11 mi
Time1:44:15
Pace7:57 /mi
📊Positive Split: 3.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:4923:387:3623:38
7:36
-
10K
6.21 mi11:16:4047:297:3923:51
7:41
+0:05
15K
9.32 mi11:40:281:11:177:3923:48
7:40
-0:01
20K
12.43 mi12:04:361:35:257:4124:08
7:46
+0:06
Half
13.11 mi12:09:531:40:427:415:17
7:45
-0:01
25K
15.53 mi12:28:541:59:437:4219:01
7:51
+0:06
30K
18.64 mi12:53:502:24:397:4624:56
8:02
+0:11
20M
20.00 mi13:04:492:35:387:4710:59
8:05
+0:03
21M
21.00 mi13:13:182:44:077:498:29
8:29
+0:24
35K
21.75 mi13:19:082:49:577:495:50
7:48
-0:41
23M
23.00 mi13:29:123:00:017:5010:04
8:02
+0:14
24M
24.00 mi13:36:593:07:487:507:47
7:47
-0:15
40K
24.85 mi13:43:463:14:357:506:47
7:56
+0:09
25.2M
25.20 mi13:46:423:17:317:502:56
8:30
+0:34
Finish
26.22 mi13:54:083:24:577:497:26
7:18
-1:12

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

7:18 /mi

Average Pace

7:49 /mi

Slowest Pace

8:30 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:27:33

72% of race

Time at Steady Pace

57:24

28% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:49 /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 mi10:52:4923:387:3623:38
7:36
#13196
10K
6.21 mi11:16:4047:297:3923:51
7:41
#13411
15K
9.32 mi11:40:281:11:177:3923:48
7:40
#13305
20K
12.43 mi12:04:361:35:257:4124:08
7:46
#13177
Half
13.11 mi12:09:531:40:427:415:17
7:45
#13205
25K
15.53 mi12:28:541:59:437:4219:01
7:51
#13073
30K
18.64 mi12:53:502:24:397:4624:56
8:02
#12736
20M
20.00 mi13:04:492:35:387:4710:59
8:05
#12578
21M
21.00 mi13:13:182:44:077:498:29
8:29
#12425
35K
21.75 mi13:19:082:49:577:495:50
7:48
#12336
23M
23.00 mi13:29:123:00:017:5010:04
8:02
#12179
24M
24.00 mi13:36:593:07:487:507:47
7:47
#12053
40K
24.85 mi13:43:463:14:357:506:47
7:56
#11934
25.2M
25.20 mi13:46:423:17:317:502:56
8:30
#11876
Finish
26.22 mi13:54:083:24:577:497:26
7:18
#11668
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi131963433343313150(Top 46%)3530(Top 29%)3530(Top 205%)
10K6.21 mi3.10 mi13411-2153596-1633596-16313684(Top 48%)3767(Top 31%)3767(Top 219%)
15K9.32 mi3.11 mi13305+1063575+213575+2113150(Top 46%)3530(Top 29%)3530(Top 205%)
20K12.43 mi3.11 mi13177+1283540+353540+3513011(Top 46%)3553(Top 29%)3553(Top 207%)
Half13.11 mi0.68 mi13205-283561-213561-2113785(Top 49%)3924(Top 32%)3924(Top 228%)
25K15.53 mi2.42 mi13073+1323517+443517+4412695(Top 45%)3492(Top 29%)3492(Top 203%)
30K18.64 mi3.11 mi12736+3373387+1303387+13011584(Top 41%)3085(Top 25%)3085(Top 180%)
20M20.00 mi1.36 mi12578+1583351+363351+3611000(Top 39%)2941(Top 24%)2941(Top 171%)
21M21.00 mi1.00 mi12425+1533300+513300+5110370(Top 37%)2800(Top 23%)2800(Top 163%)
35K21.75 mi0.75 mi12336+893282+183282+1810852(Top 38%)3035(Top 25%)3035(Top 177%)
23M23.00 mi1.25 mi12179+1573227+553227+5510359(Top 36%)2917(Top 24%)2917(Top 170%)
24M24.00 mi1.00 mi12053+1263203+243203+249724(Top 34%)2678(Top 22%)2678(Top 156%)
40K24.85 mi0.85 mi11934+1193180+233180+239743(Top 34%)2802(Top 23%)2802(Top 163%)
25.2M25.20 mi0.35 mi11876+583163+173163+178913(Top 31%)2497(Top 20%)2497(Top 145%)
Finish26.22 mi1.02 mi11668+2083092+713092+717786(Top 27%)1984(Top 16%)1984(Top 115%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 46%
×21story building
+97ft-345ft

Overall

13150

Females

3530

F40-44

3530

5K→10K

3.1 - 6.2 mi

Top 48%
×5story building
+79ft-138ft

Overall

13684

Females

3767

F40-44

3767

10K→15K

6.2 - 9.3 mi

Top 46%
×3story building
+67ft-78ft

Overall

13150

Females

3530

F40-44

3530

15K→20K

9.3 - 12.4 mi

Top 46%
×5story building
+106ft-86ft

Overall

13011

Females

3553

F40-44

3553

20K→Half

12.4 - 13.1 mi

Top 49%
×2story building
+19ft-37ft

Overall

13785

Females

3924

F40-44

3924

Half→25K

13.1 - 15.5 mi

Top 45%
×4story building
+66ft-88ft

Overall

12695

Females

3492

F40-44

3492

25K→30K

15.5 - 18.6 mi

Top 41%
×9story building
+181ft-148ft

Overall

11584

Females

3085

F40-44

3085

30K→20M

18.6 - 20.0 mi

Top 39%
×5story building
+64ft-50ft

Overall

11000

Females

2941

F40-44

2941

20M→21M

20.0 - 21.0 mi

Top 37%
×8story building
+106ft-24ft

Overall

10370

Females

2800

F40-44

2800

21M→35K

21.0 - 21.8 mi

Top 38%
×7story building
+17ft-86ft

Overall

10852

Females

3035

F40-44

3035

35K→23M

21.8 - 23.0 mi

Top 36%
×5story building
+23ft-63ft

Overall

10359

Females

2917

F40-44

2917

23M→24M

23.0 - 24.0 mi

Top 34%
×6story building
+12ft-82ft

Overall

9724

Females

2678

F40-44

2678

24M→40K

24.0 - 24.9 mi

Top 34%
×1story
+6ft-20ft

Overall

9743

Females

2802

F40-44

2802

40K→25.2M

24.9 - 25.2 mi

Top 31%
×1story
+13ft-16ft

Overall

8913

Females

2497

F40-44

2497

25.2M→Finish

25.2 - 26.2 mi

Top 27%
×2story building
+22ft-21ft

Overall

7786

Females

1984

F40-44

1984

Passing Analysis

Category:
Athletes Passed
2614
Passed By
1086
Net Change
+1528
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13196
5K → 10K196411-215#13196#13411
10K → 15K249143+106#13411#13305
15K → 20K266138+128#13305#13177
20K → Half2351-28#13177#13205
Half → 25K21987+132#13205#13073
25K → 30K41174+337#13073#12736
30K → 20M19537+158#12736#12578
20M → 21M18431+153#12578#12425
21M → 35K10718+89#12425#12336
35K → 23M18629+157#12336#12179
23M → 24M15327+126#12179#12053
24M → 40K14324+119#12053#11934
40K → 25.2M6911+58#11934#11876
25.2M → Finish2135+208#11876#11668
TOTALS26141086+1528
📊

Passing Visuals

Category:
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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