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BOSTON MARATHON 2025

Karen Leahy

Bib: 15857•F

OH

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 36%
Gender (Female)
#0 / 12228
Top 19%
Masters (Masters Women)
#0 / 6759
Top 7%
Division (F45-49)
#0 / 1813
Top 8%
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
23:36
↑ 97↓ 3451.5%
10K· 6.21 mi
7:36/mi
47:14
↑ 79↓ 1380.4%
15K· 9.32 mi
7:36/mi
1:10:50
↑ 67↓ 78
20K· 12.43 mi
7:40/mi
1:34:38
↑ 106↓ 860.1%
Half· 13.11 mi
7:39/mi
1:39:51
↑ 19↓ 370.5%
25K· 15.53 mi
7:49/mi
1:58:48
↑ 66↓ 880.2%
30K· 18.64 mi
7:50/mi
2:23:09
↑ 181↓ 1480.2%
20M
7:39/mi
2:33:33
↑ 64↓ 500.2%
21M
8:05/mi
2:41:38
↑ 106↓ 241.6%
35K· 21.75 mi
7:12/mi
2:47:01
↑ 17↓ 861.7%
23M
7:22/mi
2:56:15
↑ 23↓ 630.6%
24M
7:24/mi
3:03:39
↓ 821.3%
40K· 24.85 mi
7:21/mi
3:09:56
↓ 200.3%
25.2M
8:07/mi
3:12:44
↑ 13↓ 160.2%
Finish· 26.22 mi
7:02/mi
3:19:54
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:39:51
Pace7:37 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:40:03
Pace7:38 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:56:2823:367:3623:36
7:36
-
10K
6.21 mi11:20:0647:147:3623:38
7:36
0:00
15K
9.32 mi11:43:421:10:507:3623:36
7:36
0:00
20K
12.43 mi12:07:301:34:387:3723:48
7:40
+0:04
Half
13.11 mi12:12:431:39:517:375:13
7:39
-0:01
25K
15.53 mi12:31:401:58:487:3918:57
7:49
+0:10
30K
18.64 mi12:56:012:23:097:4124:21
7:50
+0:01
20M
20.00 mi13:06:252:33:337:4110:24
7:39
-0:11
21M
21.00 mi13:14:302:41:387:428:05
8:05
+0:26
35K
21.75 mi13:19:532:47:017:415:23
7:12
-0:53
23M
23.00 mi13:29:072:56:157:409:14
7:22
+0:10
24M
24.00 mi13:36:313:03:397:397:24
7:24
+0:02
40K
24.85 mi13:42:483:09:567:396:17
7:21
-0:03
25.2M
25.20 mi13:45:363:12:447:392:48
8:07
+0:46
Finish
26.22 mi13:52:463:19:547:387:10
7:02
-1:05

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

7:02 /mi

Average Pace

7:38 /mi

Slowest Pace

8:07 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:25:43

73% of race

Time at Steady Pace

54:11

27% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:37 /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 mi10:56:2823:367:3623:36
7:36
#13080
10K
6.21 mi11:20:0647:147:3623:38
7:36
#13058
15K
9.32 mi11:43:421:10:507:3623:36
7:36
#12864
20K
12.43 mi12:07:301:34:387:3723:48
7:40
#12615
Half
13.11 mi12:12:431:39:517:375:13
7:39
#12636
25K
15.53 mi12:31:401:58:487:3918:57
7:49
#12575
30K
18.64 mi12:56:012:23:097:4124:21
7:50
#12071
20M
20.00 mi13:06:252:33:337:4110:24
7:39
#11710
21M
21.00 mi13:14:302:41:387:428:05
8:05
#11438
35K
21.75 mi13:19:532:47:017:415:23
7:12
#11235
23M
23.00 mi13:29:072:56:157:409:14
7:22
#10842
24M
24.00 mi13:36:313:03:397:397:24
7:24
#10639
40K
24.85 mi13:42:483:09:567:396:17
7:21
#10421
25.2M
25.20 mi13:45:363:12:447:392:48
8:07
#10332
Finish
26.22 mi13:52:463:19:547:387:10
7:02
#10116
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi130803359335912569(Top 44%)3196(Top 26%)3196(Top 176%)
10K6.21 mi3.10 mi13058+223374-153374-1513083(Top 46%)3413(Top 28%)3413(Top 188%)
15K9.32 mi3.11 mi12864+1943305+693305+6912569(Top 44%)3196(Top 26%)3196(Top 176%)
20K12.43 mi3.11 mi12615+2493212+933212+9312042(Top 42%)3013(Top 25%)3013(Top 166%)
Half13.11 mi0.68 mi12636-213232-203232-2012974(Top 46%)3460(Top 28%)3460(Top 191%)
25K15.53 mi2.42 mi12575+613231+13231+112485(Top 44%)3380(Top 28%)3380(Top 186%)
30K18.64 mi3.11 mi12071+5043029+2023029+20210208(Top 36%)2384(Top 19%)2384(Top 131%)
20M20.00 mi1.36 mi11710+3612879+1502879+1508083(Top 28%)1577(Top 13%)1577(Top 87%)
21M21.00 mi1.00 mi11438+2722783+962783+967889(Top 28%)1686(Top 14%)1686(Top 93%)
35K21.75 mi0.75 mi11235+2032697+862697+866638(Top 23%)1162(Top 10%)1162(Top 64%)
23M23.00 mi1.25 mi10842+3932528+1692528+1695935(Top 21%)1007(Top 8%)1007(Top 56%)
24M24.00 mi1.00 mi10639+2032463+652463+657089(Top 25%)1503(Top 12%)1503(Top 83%)
40K24.85 mi0.85 mi10421+2182378+852378+855963(Top 21%)1133(Top 9%)1133(Top 62%)
25.2M25.20 mi0.35 mi10332+892357+212357+216693(Top 24%)1521(Top 12%)1521(Top 84%)
Finish26.22 mi1.02 mi10116+2162279+782279+785996(Top 21%)1259(Top 10%)1259(Top 69%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 44%
×21story building
+97ft-345ft

Overall

12569

Females

3196

F45-49

3196

5K→10K

3.1 - 6.2 mi

Top 46%
×5story building
+79ft-138ft

Overall

13083

Females

3413

F45-49

3413

10K→15K

6.2 - 9.3 mi

Top 44%
×3story building
+67ft-78ft

Overall

12569

Females

3196

F45-49

3196

15K→20K

9.3 - 12.4 mi

Top 42%
×5story building
+106ft-86ft

Overall

12042

Females

3013

F45-49

3013

20K→Half

12.4 - 13.1 mi

Top 46%
×2story building
+19ft-37ft

Overall

12974

Females

3460

F45-49

3460

Half→25K

13.1 - 15.5 mi

Top 44%
×4story building
+66ft-88ft

Overall

12485

Females

3380

F45-49

3380

25K→30K

15.5 - 18.6 mi

Top 36%
×9story building
+181ft-148ft

Overall

10208

Females

2384

F45-49

2384

30K→20M

18.6 - 20.0 mi

Top 28%
×5story building
+64ft-50ft

Overall

8083

Females

1577

F45-49

1577

20M→21M

20.0 - 21.0 mi

Top 28%
×8story building
+106ft-24ft

Overall

7889

Females

1686

F45-49

1686

21M→35K

21.0 - 21.8 mi

Top 23%
×7story building
+17ft-86ft

Overall

6638

Females

1162

F45-49

1162

35K→23M

21.8 - 23.0 mi

Top 21%
×5story building
+23ft-63ft

Overall

5935

Females

1007

F45-49

1007

23M→24M

23.0 - 24.0 mi

Top 25%
×6story building
+12ft-82ft

Overall

7089

Females

1503

F45-49

1503

24M→40K

24.0 - 24.9 mi

Top 21%
×1story
+6ft-20ft

Overall

5963

Females

1133

F45-49

1133

40K→25.2M

24.9 - 25.2 mi

Top 24%
×1story
+13ft-16ft

Overall

6693

Females

1521

F45-49

1521

25.2M→Finish

25.2 - 26.2 mi

Top 21%
×2story building
+22ft-21ft

Overall

5996

Females

1259

F45-49

1259

Passing Analysis

Category:
Athletes Passed
3678
Passed By
714
Net Change
+2964
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13080
5K → 10K289267+22#13080#13058
10K → 15K325131+194#13058#12864
15K → 20K32677+249#12864#12615
20K → Half2546-21#12615#12636
Half → 25K176115+61#12636#12575
25K → 30K54036+504#12575#12071
30K → 20M3676+361#12071#11710
20M → 21M2819+272#11710#11438
21M → 35K2052+203#11438#11235
35K → 23M3952+393#11235#10842
23M → 24M2107+203#10842#10639
24M → 40K2235+218#10639#10421
40K → 25.2M923+89#10421#10332
25.2M → Finish2248+216#10332#10116
TOTALS3678714+2964
📊

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