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BOSTON MARATHON 2025

Betsy Laski

Bib: 13531•F

KY

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 23%
Gender (Female)
#0 / 12228
Top 7%
Masters (Masters Women)
#0 / 6759
Top 2%
Division (F40-44)
#0 / 1718
Top 4%
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
7:10/mi
22:16
↑ 97↓ 3451.5%
10K· 6.21 mi
6:55/mi
43:46
↑ 79↓ 1380.4%
15K· 9.32 mi
6:57/mi
1:05:21
↑ 67↓ 78
20K· 12.43 mi
7:00/mi
1:27:07
↑ 106↓ 860.1%
Half· 13.11 mi
6:55/mi
1:31:50
↑ 19↓ 370.5%
25K· 15.53 mi
6:55/mi
1:48:35
↑ 66↓ 880.2%
30K· 18.64 mi
7:06/mi
2:10:37
↑ 181↓ 1480.2%
20M
7:18/mi
2:20:32
↑ 64↓ 500.2%
21M
7:46/mi
2:28:18
↑ 106↓ 241.6%
35K· 21.75 mi
7:13/mi
2:33:42
↑ 17↓ 861.7%
23M
7:34/mi
2:43:11
↑ 23↓ 630.6%
24M
7:18/mi
2:50:29
↓ 821.3%
40K· 24.85 mi
7:26/mi
2:56:50
↓ 200.3%
25.2M
8:33/mi
2:59:47
↑ 13↓ 160.2%
Finish· 26.22 mi
7:59/mi
3:07:55
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:31:50
Pace7:00 /mi
2nd Half
Distance13.11 mi
Time1:36:05
Pace7:20 /mi
📊Positive Split: 4.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:3422:167:1022:16
7:10
-
10K
6.21 mi11:13:0443:467:0321:30
6:55
-0:15
15K
9.32 mi11:34:391:05:217:0121:35
6:57
+0:02
20K
12.43 mi11:56:251:27:077:0121:46
7:00
+0:03
Half
13.11 mi12:01:081:31:507:004:43
6:55
-0:05
25K
15.53 mi12:17:531:48:356:5916:45
6:55
0:00
30K
18.64 mi12:39:552:10:377:0022:02
7:06
+0:11
20M
20.00 mi12:49:502:20:327:029:55
7:18
+0:12
21M
21.00 mi12:57:362:28:187:047:46
7:46
+0:28
35K
21.75 mi13:03:002:33:427:045:24
7:13
-0:33
23M
23.00 mi13:12:292:43:117:069:29
7:34
+0:21
24M
24.00 mi13:19:472:50:297:067:18
7:18
-0:16
40K
24.85 mi13:26:082:56:507:076:21
7:26
+0:08
25.2M
25.20 mi13:29:052:59:477:082:57
8:33
+1:07
Finish
26.22 mi13:37:133:07:557:108:08
7:59
-0:34

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

6:55 /mi

Average Pace

7:10 /mi

Slowest Pace

8:33 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:04:33

34% of race

Time at Steady Pace

1:35:02

51% of race

Time at Slower Pace

28:20

15% of race

Average Pace: 7:10 /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 mi10:51:3422:167:1022:16
7:10
#9201
10K
6.21 mi11:13:0443:467:0321:30
6:55
#8208
15K
9.32 mi11:34:391:05:217:0121:35
6:57
#7836
20K
12.43 mi11:56:251:27:077:0121:46
7:00
#7566
Half
13.11 mi12:01:081:31:507:004:43
6:55
#7526
25K
15.53 mi12:17:531:48:356:5916:45
6:55
#7194
30K
18.64 mi12:39:552:10:377:0022:02
7:06
#6718
20M
20.00 mi12:49:502:20:327:029:55
7:18
#6554
21M
21.00 mi12:57:362:28:187:047:46
7:46
#6455
35K
21.75 mi13:03:002:33:427:045:24
7:13
#6422
23M
23.00 mi13:12:292:43:117:069:29
7:34
#6375
24M
24.00 mi13:19:472:50:297:067:18
7:18
#6334
40K
24.85 mi13:26:082:56:507:076:21
7:26
#6294
25.2M
25.20 mi13:29:052:59:477:082:57
8:33
#6310
Finish
26.22 mi13:37:133:07:557:108:08
7:59
#6471
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi9201145114517297(Top 26%)809(Top 7%)809(Top 47%)
10K6.21 mi3.10 mi8208+9931067+3841067+3847404(Top 26%)808(Top 7%)808(Top 47%)
15K9.32 mi3.11 mi7836+372944+123944+1237297(Top 26%)809(Top 7%)809(Top 47%)
20K12.43 mi3.11 mi7566+270872+72872+726912(Top 24%)756(Top 6%)756(Top 44%)
Half13.11 mi0.68 mi7526+40860+12860+127063(Top 25%)788(Top 6%)788(Top 46%)
25K15.53 mi2.42 mi7194+332782+78782+785748(Top 20%)541(Top 4%)541(Top 31%)
30K18.64 mi3.11 mi6718+476708+74708+745279(Top 19%)506(Top 4%)506(Top 29%)
20M20.00 mi1.36 mi6554+164691+17691+175804(Top 20%)732(Top 6%)732(Top 43%)
21M21.00 mi1.00 mi6455+99682+9682+96018(Top 21%)926(Top 8%)926(Top 54%)
35K21.75 mi0.75 mi6422+33688-6688-66753(Top 24%)1174(Top 10%)1174(Top 68%)
23M23.00 mi1.25 mi6375+47702-14702-147088(Top 25%)1432(Top 12%)1432(Top 83%)
24M24.00 mi1.00 mi6334+41713-11713-116439(Top 23%)1236(Top 10%)1236(Top 72%)
40K24.85 mi0.85 mi6294+40719-6719-66383(Top 22%)1282(Top 10%)1282(Top 75%)
25.2M25.20 mi0.35 mi6310-16738-19738-199118(Top 32%)2555(Top 21%)2555(Top 149%)
Finish26.22 mi1.02 mi6471-161820-82820-8212760(Top 45%)4303(Top 35%)4303(Top 250%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 26%
×21story building
+97ft-345ft

Overall

7297

Females

809

F40-44

809

5K→10K

3.1 - 6.2 mi

Top 26%
×5story building
+79ft-138ft

Overall

7404

Females

808

F40-44

808

10K→15K

6.2 - 9.3 mi

Top 26%
×3story building
+67ft-78ft

Overall

7297

Females

809

F40-44

809

15K→20K

9.3 - 12.4 mi

Top 24%
×5story building
+106ft-86ft

Overall

6912

Females

756

F40-44

756

20K→Half

12.4 - 13.1 mi

Top 25%
×2story building
+19ft-37ft

Overall

7063

Females

788

F40-44

788

Half→25K

13.1 - 15.5 mi

Top 20%
×4story building
+66ft-88ft

Overall

5748

Females

541

F40-44

541

25K→30K

15.5 - 18.6 mi

Top 19%
×9story building
+181ft-148ft

Overall

5279

Females

506

F40-44

506

30K→20M

18.6 - 20.0 mi

Top 20%
×5story building
+64ft-50ft

Overall

5804

Females

732

F40-44

732

20M→21M

20.0 - 21.0 mi

Top 21%
×8story building
+106ft-24ft

Overall

6018

Females

926

F40-44

926

21M→35K

21.0 - 21.8 mi

Top 24%
×7story building
+17ft-86ft

Overall

6753

Females

1174

F40-44

1174

35K→23M

21.8 - 23.0 mi

Top 25%
×5story building
+23ft-63ft

Overall

7088

Females

1432

F40-44

1432

23M→24M

23.0 - 24.0 mi

Top 23%
×6story building
+12ft-82ft

Overall

6439

Females

1236

F40-44

1236

24M→40K

24.0 - 24.9 mi

Top 22%
×1story
+6ft-20ft

Overall

6383

Females

1282

F40-44

1282

40K→25.2M

24.9 - 25.2 mi

Top 32%
×1story
+13ft-16ft

Overall

9118

Females

2555

F40-44

2555

25.2M→Finish

25.2 - 26.2 mi

Top 45%
×2story building
+22ft-21ft

Overall

12760

Females

4303

F40-44

4303

Passing Analysis

Category:
Athletes Passed
3232
Passed By
502
Net Change
+2730
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9201
5K → 10K100815+993#9201#8208
10K → 15K39119+372#8208#7836
15K → 20K29929+270#7836#7566
20K → Half455+40#7566#7526
Half → 25K3342+332#7526#7194
25K → 30K48610+476#7194#6718
30K → 20M18521+164#6718#6554
20M → 21M12021+99#6554#6455
21M → 35K6229+33#6455#6422
35K → 23M10356+47#6422#6375
23M → 24M8039+41#6375#6334
24M → 40K6828+40#6334#6294
40K → 25.2M2541-16#6294#6310
25.2M → Finish26187-161#6310#6471
TOTALS3232502+2730
📊

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