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BOSTON MARATHON 2025

Leah Mark

Bib: 10395•F

NY

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 17%
Gender (Female)
#0 / 12228
Top 4%
Masters (Masters Women)
#0 / 6759
Top 0.9%
Division (F45-49)
#0 / 1813
Top 0.9%
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
6:43/mi
20:52
↑ 97↓ 3451.5%
10K· 6.21 mi
6:34/mi
41:17
↑ 79↓ 1380.4%
15K· 9.32 mi
6:40/mi
1:01:59
↑ 67↓ 78
20K· 12.43 mi
6:55/mi
1:23:27
↑ 106↓ 860.1%
Half· 13.11 mi
6:49/mi
1:28:06
↑ 19↓ 370.5%
25K· 15.53 mi
6:58/mi
1:44:59
↑ 66↓ 880.2%
30K· 18.64 mi
7:13/mi
2:07:24
↑ 181↓ 1480.2%
20M
7:16/mi
2:17:17
↑ 64↓ 500.2%
21M
7:44/mi
2:25:01
↑ 106↓ 241.6%
35K· 21.75 mi
6:52/mi
2:30:09
↑ 17↓ 861.7%
23M
7:06/mi
2:39:02
↑ 23↓ 630.6%
24M
6:51/mi
2:45:53
↓ 821.3%
40K· 24.85 mi
6:55/mi
2:51:48
↓ 200.3%
25.2M
7:32/mi
2:54:24
↑ 13↓ 160.2%
Finish· 26.22 mi
6:42/mi
3:01:14
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:28:06
Pace6:43 /mi
2nd Half
Distance13.11 mi
Time1:33:08
Pace7:06 /mi
📊Positive Split: 5.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:46:3220:526:4320:52
6:43
-
10K
6.21 mi11:06:5741:176:3920:25
6:34
-0:09
15K
9.32 mi11:27:391:01:596:3920:42
6:40
+0:06
20K
12.43 mi11:49:071:23:276:4321:28
6:55
+0:15
Half
13.11 mi11:53:461:28:066:434:39
6:49
-0:06
25K
15.53 mi12:10:391:44:596:4516:53
6:58
+0:09
30K
18.64 mi12:33:042:07:246:5022:25
7:13
+0:15
20M
20.00 mi12:42:572:17:176:529:53
7:16
+0:03
21M
21.00 mi12:50:412:25:016:547:44
7:44
+0:28
35K
21.75 mi12:55:492:30:096:545:08
6:52
-0:52
23M
23.00 mi13:04:422:39:026:558:53
7:06
+0:14
24M
24.00 mi13:11:332:45:536:556:51
6:51
-0:15
40K
24.85 mi13:17:282:51:486:555:55
6:55
+0:04
25.2M
25.20 mi13:20:042:54:246:552:36
7:32
+0:37
Finish
26.22 mi13:26:543:01:146:556:50
6:42
-0:50

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

6:34 /mi

Average Pace

6:55 /mi

Slowest Pace

7:44 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:41:01

89% of race

Time at Steady Pace

20:13

11% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:55 /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 mi10:46:3220:526:4320:52
6:43
#5613
10K
6.21 mi11:06:5741:176:3920:25
6:34
#4879
15K
9.32 mi11:27:391:01:596:3920:42
6:40
#4808
20K
12.43 mi11:49:071:23:276:4321:28
6:55
#5129
Half
13.11 mi11:53:461:28:066:434:39
6:49
#5178
25K
15.53 mi12:10:391:44:596:4516:53
6:58
#5354
30K
18.64 mi12:33:042:07:246:5022:25
7:13
#5472
20M
20.00 mi12:42:572:17:176:529:53
7:16
#5489
21M
21.00 mi12:50:412:25:016:547:44
7:44
#5484
35K
21.75 mi12:55:492:30:096:545:08
6:52
#5411
23M
23.00 mi13:04:422:39:026:558:53
7:06
#5283
24M
24.00 mi13:11:332:45:536:556:51
6:51
#5186
40K
24.85 mi13:17:282:51:486:555:55
6:55
#5083
25.2M
25.20 mi13:20:042:54:246:552:36
7:32
#5044
Finish
26.22 mi13:26:543:01:146:556:50
6:42
#4965
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi56134084084779(Top 17%)310(Top 3%)310(Top 17%)
10K6.21 mi3.10 mi4879+734313+95313+954252(Top 15%)248(Top 2%)248(Top 14%)
15K9.32 mi3.11 mi4808+71303+10303+104779(Top 17%)310(Top 3%)310(Top 17%)
20K12.43 mi3.11 mi5129-321361-58361-586286(Top 22%)614(Top 5%)614(Top 34%)
Half13.11 mi0.68 mi5178-49366-5366-56340(Top 22%)602(Top 5%)602(Top 33%)
25K15.53 mi2.42 mi5354-176410-44410-446079(Top 21%)602(Top 5%)602(Top 33%)
30K18.64 mi3.11 mi5472-118448-38448-385994(Top 21%)672(Top 5%)672(Top 37%)
20M20.00 mi1.36 mi5489-17457-9457-95634(Top 20%)689(Top 6%)689(Top 38%)
21M21.00 mi1.00 mi5484+5463-6463-65849(Top 21%)867(Top 7%)867(Top 48%)
35K21.75 mi0.75 mi5411+73462+1462+14537(Top 16%)493(Top 4%)493(Top 27%)
23M23.00 mi1.25 mi5283+128454+8454+84327(Top 15%)483(Top 4%)483(Top 27%)
24M24.00 mi1.00 mi5186+97448+6448+63842(Top 14%)425(Top 3%)425(Top 23%)
40K24.85 mi0.85 mi5083+103438+10438+103500(Top 12%)380(Top 3%)380(Top 21%)
25.2M25.20 mi0.35 mi5044+39433+5433+53666(Top 13%)468(Top 4%)468(Top 26%)
Finish26.22 mi1.02 mi4965+79434-1434-13938(Top 14%)530(Top 4%)530(Top 29%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 17%
×21story building
+97ft-345ft

Overall

4779

Females

310

F45-49

310

5K→10K

3.1 - 6.2 mi

Top 15%
×5story building
+79ft-138ft

Overall

4252

Females

248

F45-49

248

10K→15K

6.2 - 9.3 mi

Top 17%
×3story building
+67ft-78ft

Overall

4779

Females

310

F45-49

310

15K→20K

9.3 - 12.4 mi

Top 22%
×5story building
+106ft-86ft

Overall

6286

Females

614

F45-49

614

20K→Half

12.4 - 13.1 mi

Top 22%
×2story building
+19ft-37ft

Overall

6340

Females

602

F45-49

602

Half→25K

13.1 - 15.5 mi

Top 21%
×4story building
+66ft-88ft

Overall

6079

Females

602

F45-49

602

25K→30K

15.5 - 18.6 mi

Top 21%
×9story building
+181ft-148ft

Overall

5994

Females

672

F45-49

672

30K→20M

18.6 - 20.0 mi

Top 20%
×5story building
+64ft-50ft

Overall

5634

Females

689

F45-49

689

20M→21M

20.0 - 21.0 mi

Top 21%
×8story building
+106ft-24ft

Overall

5849

Females

867

F45-49

867

21M→35K

21.0 - 21.8 mi

Top 16%
×7story building
+17ft-86ft

Overall

4537

Females

493

F45-49

493

35K→23M

21.8 - 23.0 mi

Top 15%
×5story building
+23ft-63ft

Overall

4327

Females

483

F45-49

483

23M→24M

23.0 - 24.0 mi

Top 14%
×6story building
+12ft-82ft

Overall

3842

Females

425

F45-49

425

24M→40K

24.0 - 24.9 mi

Top 12%
×1story
+6ft-20ft

Overall

3500

Females

380

F45-49

380

40K→25.2M

24.9 - 25.2 mi

Top 13%
×1story
+13ft-16ft

Overall

3666

Females

468

F45-49

468

25.2M→Finish

25.2 - 26.2 mi

Top 14%
×2story building
+22ft-21ft

Overall

3938

Females

530

F45-49

530

Passing Analysis

Category:
Athletes Passed
1894
Passed By
1246
Net Change
+648
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5613
5K → 10K74915+734#5613#4879
10K → 15K14372+71#4879#4808
15K → 20K58379-321#4808#5129
20K → Half1261-49#5129#5178
Half → 25K66242-176#5178#5354
25K → 30K142260-118#5354#5472
30K → 20M7188-17#5472#5489
20M → 21M6661+5#5489#5484
21M → 35K8916+73#5484#5411
35K → 23M14416+128#5411#5283
23M → 24M10912+97#5283#5186
24M → 40K1085+103#5186#5083
40K → 25.2M434+39#5083#5044
25.2M → Finish9415+79#5044#4965
TOTALS18941246+648
📊

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