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BOSTON MARATHON 2025

Laura Jansik

Bib: 16926•F

FL

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F55-59)
#0 / 994
Top 41%
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
8:55/mi
27:42
↑ 97↓ 3451.5%
10K· 6.21 mi
8:55/mi
55:25
↑ 79↓ 1380.4%
15K· 9.32 mi
8:50/mi
1:22:53
↑ 67↓ 78
20K· 12.43 mi
8:53/mi
1:50:30
↑ 106↓ 860.1%
Half· 13.11 mi
8:43/mi
1:56:27
↑ 19↓ 370.5%
25K· 15.53 mi
8:57/mi
2:18:09
↑ 66↓ 880.2%
30K· 18.64 mi
9:16/mi
2:46:55
↑ 181↓ 1480.2%
20M
9:25/mi
2:59:43
↑ 64↓ 500.2%
21M
9:57/mi
3:09:40
↑ 106↓ 241.6%
35K· 21.75 mi
8:53/mi
3:16:19
↑ 17↓ 861.7%
23M
9:20/mi
3:28:00
↑ 23↓ 630.6%
24M
9:02/mi
3:37:02
↓ 821.3%
40K· 24.85 mi
9:11/mi
3:44:53
↓ 200.3%
25.2M
10:03/mi
3:48:21
↑ 13↓ 160.2%
Finish· 26.22 mi
8:57/mi
3:57:28
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:56:27
Pace8:53 /mi
2nd Half
Distance13.11 mi
Time2:01:01
Pace9:14 /mi
📊Positive Split: 3.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:02:0127:428:5527:42
8:55
-
10K
6.21 mi11:29:4455:258:5527:43
8:55
0:00
15K
9.32 mi11:57:121:22:538:5427:28
8:50
-0:05
20K
12.43 mi12:24:491:50:308:5327:37
8:53
+0:03
Half
13.11 mi12:30:461:56:278:535:57
8:43
-0:10
25K
15.53 mi12:52:282:18:098:5421:42
8:57
+0:14
30K
18.64 mi13:21:142:46:558:5728:46
9:16
+0:19
20M
20.00 mi13:34:022:59:438:5912:48
9:25
+0:09
21M
21.00 mi13:43:593:09:409:029:57
9:57
+0:32
35K
21.75 mi13:50:383:16:199:026:39
8:53
-1:04
23M
23.00 mi14:02:193:28:009:0311:41
9:20
+0:27
24M
24.00 mi14:11:213:37:029:039:02
9:02
-0:18
40K
24.85 mi14:19:123:44:539:037:51
9:11
+0:09
25.2M
25.20 mi14:22:403:48:219:043:28
10:03
+0:52
Finish
26.22 mi14:31:473:57:289:049:07
8:57
-1:06

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

8:43 /mi

Average Pace

9:04 /mi

Slowest Pace

10:03 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:44:03

94% of race

Time at Steady Pace

13:25

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 9:03 /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 mi11:02:0127:428:5527:42
8:55
#22070
10K
6.21 mi11:29:4455:258:5527:43
8:55
#22048
15K
9.32 mi11:57:121:22:538:5427:28
8:50
#21782
20K
12.43 mi12:24:491:50:308:5327:37
8:53
#21401
Half
13.11 mi12:30:461:56:278:535:57
8:43
#21348
25K
15.53 mi12:52:282:18:098:5421:42
8:57
#21062
30K
18.64 mi13:21:142:46:558:5728:46
9:16
#20655
20M
20.00 mi13:34:022:59:438:5912:48
9:25
#20487
21M
21.00 mi13:43:593:09:409:029:57
9:57
#20344
35K
21.75 mi13:50:383:16:199:026:39
8:53
#20245
23M
23.00 mi14:02:193:28:009:0311:41
9:20
#20120
24M
24.00 mi14:11:213:37:029:039:02
9:02
#20015
40K
24.85 mi14:19:123:44:539:037:51
9:11
#19915
25.2M
25.20 mi14:22:403:48:219:043:28
10:03
#19872
Finish
26.22 mi14:31:473:57:289:049:07
8:57
#19832
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi3.11 mi220708667866721242(Top 75%)8131(Top 66%)8131(Top 818%)
10K6.21 mi3.10 mi22048+228639+288639+2822045(Top 78%)8618(Top 70%)8618(Top 867%)
15K9.32 mi3.11 mi21782+2668485+1548485+15421242(Top 75%)8131(Top 66%)8131(Top 818%)
20K12.43 mi3.11 mi21401+3818263+2228263+22220419(Top 72%)7721(Top 63%)7721(Top 777%)
Half13.11 mi0.68 mi21348+538231+328231+3220520(Top 72%)7768(Top 64%)7768(Top 781%)
25K15.53 mi2.42 mi21062+2868075+1568075+15619691(Top 69%)7360(Top 60%)7360(Top 740%)
30K18.64 mi3.11 mi20655+4077904+1717904+17118941(Top 67%)7089(Top 58%)7089(Top 713%)
20M20.00 mi1.36 mi20487+1687824+807824+8018843(Top 66%)7183(Top 59%)7183(Top 723%)
21M21.00 mi1.00 mi20344+1437772+527772+5218134(Top 64%)6871(Top 56%)6871(Top 691%)
35K21.75 mi0.75 mi20245+997732+407732+4017747(Top 62%)6771(Top 55%)6771(Top 681%)
23M23.00 mi1.25 mi20120+1257689+437689+4317954(Top 63%)6969(Top 57%)6969(Top 701%)
24M24.00 mi1.00 mi20015+1057649+407649+4017569(Top 62%)6805(Top 56%)6805(Top 685%)
40K24.85 mi0.85 mi19915+1007610+397610+3917296(Top 61%)6754(Top 55%)6754(Top 679%)
25.2M25.20 mi0.35 mi19872+437597+137597+1317334(Top 61%)6784(Top 55%)6784(Top 682%)
Finish26.22 mi1.02 mi19832+407589+87589+818790(Top 66%)7486(Top 61%)7486(Top 753%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 75%
×21story building
+97ft-345ft

Overall

21242

Females

8131

F55-59

8131

5K→10K

3.1 - 6.2 mi

Top 78%
×5story building
+79ft-138ft

Overall

22045

Females

8618

F55-59

8618

10K→15K

6.2 - 9.3 mi

Top 75%
×3story building
+67ft-78ft

Overall

21242

Females

8131

F55-59

8131

15K→20K

9.3 - 12.4 mi

Top 72%
×5story building
+106ft-86ft

Overall

20419

Females

7721

F55-59

7721

20K→Half

12.4 - 13.1 mi

Top 72%
×2story building
+19ft-37ft

Overall

20520

Females

7768

F55-59

7768

Half→25K

13.1 - 15.5 mi

Top 69%
×4story building
+66ft-88ft

Overall

19691

Females

7360

F55-59

7360

25K→30K

15.5 - 18.6 mi

Top 67%
×9story building
+181ft-148ft

Overall

18941

Females

7089

F55-59

7089

30K→20M

18.6 - 20.0 mi

Top 66%
×5story building
+64ft-50ft

Overall

18843

Females

7183

F55-59

7183

20M→21M

20.0 - 21.0 mi

Top 64%
×8story building
+106ft-24ft

Overall

18134

Females

6871

F55-59

6871

21M→35K

21.0 - 21.8 mi

Top 62%
×7story building
+17ft-86ft

Overall

17747

Females

6771

F55-59

6771

35K→23M

21.8 - 23.0 mi

Top 63%
×5story building
+23ft-63ft

Overall

17954

Females

6969

F55-59

6969

23M→24M

23.0 - 24.0 mi

Top 62%
×6story building
+12ft-82ft

Overall

17569

Females

6805

F55-59

6805

24M→40K

24.0 - 24.9 mi

Top 61%
×1story
+6ft-20ft

Overall

17296

Females

6754

F55-59

6754

40K→25.2M

24.9 - 25.2 mi

Top 61%
×1story
+13ft-16ft

Overall

17334

Females

6784

F55-59

6784

25.2M→Finish

25.2 - 26.2 mi

Top 66%
×2story building
+22ft-21ft

Overall

18790

Females

7486

F55-59

7486

Passing Analysis

Category:
Athletes Passed
2845
Passed By
607
Net Change
+2238
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22070
5K → 10K268246+22#22070#22048
10K → 15K35084+266#22048#21782
15K → 20K41736+381#21782#21401
20K → Half6916+53#21401#21348
Half → 25K31024+286#21348#21062
25K → 30K45144+407#21062#20655
30K → 20M19426+168#20655#20487
20M → 21M16825+143#20487#20344
21M → 35K1067+99#20344#20245
35K → 23M14621+125#20245#20120
23M → 24M12520+105#20120#20015
24M → 40K11717+100#20015#19915
40K → 25.2M507+43#19915#19872
25.2M → Finish7434+40#19872#19832
TOTALS2845607+2238
📊

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