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BOSTON MARATHON 2025

Laura Janas

Bib: 31906•F

NV

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F50-54)
#0 / 1303
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
9:52/mi
30:38
↑ 97↓ 3451.5%
10K· 6.21 mi
10:11/mi
1:02:17
↑ 79↓ 1380.4%
15K· 9.32 mi
10:17/mi
1:34:13
↑ 67↓ 78
20K· 12.43 mi
10:43/mi
2:07:30
↑ 106↓ 860.1%
Half· 13.11 mi
10:27/mi
2:14:38
↑ 19↓ 370.5%
25K· 15.53 mi
11:25/mi
2:42:18
↑ 66↓ 880.2%
30K· 18.64 mi
11:31/mi
3:18:04
↑ 181↓ 1480.2%
20M
12:11/mi
3:34:37
↑ 64↓ 500.2%
21M
12:07/mi
3:46:44
↑ 106↓ 241.6%
35K· 21.75 mi
11:46/mi
3:55:32
↑ 17↓ 861.7%
23M
12:31/mi
4:11:12
↑ 23↓ 630.6%
24M
11:23/mi
4:22:35
↓ 821.3%
40K· 24.85 mi
11:30/mi
4:32:25
↓ 200.3%
25.2M
12:31/mi
4:36:44
↑ 13↓ 160.2%
Finish· 26.22 mi
10:54/mi
4:47:50
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:14:38
Pace10:16 /mi
2nd Half
Distance13.11 mi
Time2:33:12
Pace11:41 /mi
📊Positive Split: 13.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:56:1330:389:5230:38
9:52
-
10K
6.21 mi12:27:521:02:1710:0131:39
10:11
+0:19
15K
9.32 mi12:59:481:34:1310:0731:56
10:17
+0:06
20K
12.43 mi13:33:052:07:3010:1633:17
10:43
+0:26
Half
13.11 mi13:40:132:14:3810:167:08
10:27
-0:16
25K
15.53 mi14:07:532:42:1810:2727:40
11:25
+0:58
30K
18.64 mi14:43:393:18:0410:3835:46
11:31
+0:06
20M
20.00 mi15:00:123:34:3710:4416:33
12:11
+0:40
21M
21.00 mi15:12:193:46:4410:4812:07
12:07
-0:04
35K
21.75 mi15:21:073:55:3210:508:48
11:46
-0:21
23M
23.00 mi15:36:474:11:1210:5515:40
12:31
+0:45
24M
24.00 mi15:48:104:22:3510:5611:23
11:23
-1:08
40K
24.85 mi15:58:004:32:2510:589:50
11:30
+0:07
25.2M
25.20 mi16:02:194:36:4410:594:19
12:31
+1:01
Finish
26.22 mi16:13:254:47:5010:5911:06
10:54
-1:37

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

9:52 /mi

Average Pace

10:59 /mi

Slowest Pace

12:31 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:25:44

51% of race

Time at Steady Pace

1:33:27

32% of race

Time at Slower Pace

48:39

17% of race

Average Pace: 10:59 /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 mi11:56:1330:389:5230:38
9:52
#25232
10K
6.21 mi12:27:521:02:1710:0131:39
10:11
#25501
15K
9.32 mi12:59:481:34:1310:0731:56
10:17
#25554
20K
12.43 mi13:33:052:07:3010:1633:17
10:43
#25529
Half
13.11 mi13:40:132:14:3810:167:08
10:27
#25538
25K
15.53 mi14:07:532:42:1810:2727:40
11:25
#25612
30K
18.64 mi14:43:393:18:0410:3835:46
11:31
#25462
20M
20.00 mi15:00:123:34:3710:4416:33
12:11
#25470
21M
21.00 mi15:12:193:46:4410:4812:07
12:07
#25395
35K
21.75 mi15:21:073:55:3210:508:48
11:46
#25400
23M
23.00 mi15:36:474:11:1210:5515:40
12:31
#25422
24M
24.00 mi15:48:104:22:3510:5611:23
11:23
#25397
40K
24.85 mi15:58:004:32:2510:589:50
11:30
#25357
25.2M
25.20 mi16:02:194:36:4410:594:19
12:31
#25346
Finish
26.22 mi16:13:254:47:5010:5911:06
10:54
#25352
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi25232103361033625549(Top 90%)10534(Top 86%)10534(Top 808%)
10K6.21 mi3.10 mi25501-26910501-16510501-16525718(Top 91%)10642(Top 87%)10642(Top 817%)
15K9.32 mi3.11 mi25554-5310530-2910530-2925549(Top 90%)10534(Top 86%)10534(Top 808%)
20K12.43 mi3.11 mi25529+2510524+610524+625555(Top 90%)10570(Top 86%)10570(Top 811%)
Half13.11 mi0.68 mi25538-910529-510529-525702(Top 90%)10662(Top 87%)10662(Top 818%)
25K15.53 mi2.42 mi25612-7410578-4910578-4925748(Top 91%)10722(Top 88%)10722(Top 823%)
30K18.64 mi3.11 mi25462+15010540+3810540+3824852(Top 87%)10326(Top 84%)10326(Top 792%)
20M20.00 mi1.36 mi25470-810555-1510555-1525499(Top 90%)10753(Top 88%)10753(Top 825%)
21M21.00 mi1.00 mi25395+7510536+1910536+1923783(Top 84%)9910(Top 81%)9910(Top 761%)
35K21.75 mi0.75 mi25400-510545-910545-925487(Top 90%)10841(Top 89%)10841(Top 832%)
23M23.00 mi1.25 mi25422-2210566-2110566-2125815(Top 91%)11007(Top 90%)11007(Top 845%)
24M24.00 mi1.00 mi25397+2510559+710559+724688(Top 87%)10483(Top 86%)10483(Top 805%)
40K24.85 mi0.85 mi25357+4010540+1910540+1924117(Top 85%)10228(Top 84%)10228(Top 785%)
25.2M25.20 mi0.35 mi25346+1110537+310537+324171(Top 85%)10263(Top 84%)10263(Top 788%)
Finish26.22 mi1.02 mi25352-610549-1210549-1225140(Top 89%)10717(Top 88%)10717(Top 822%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 90%
×21story building
+97ft-345ft

Overall

25549

Females

10534

F50-54

10534

5K→10K

3.1 - 6.2 mi

Top 91%
×5story building
+79ft-138ft

Overall

25718

Females

10642

F50-54

10642

10K→15K

6.2 - 9.3 mi

Top 90%
×3story building
+67ft-78ft

Overall

25549

Females

10534

F50-54

10534

15K→20K

9.3 - 12.4 mi

Top 90%
×5story building
+106ft-86ft

Overall

25555

Females

10570

F50-54

10570

20K→Half

12.4 - 13.1 mi

Top 90%
×2story building
+19ft-37ft

Overall

25702

Females

10662

F50-54

10662

Half→25K

13.1 - 15.5 mi

Top 91%
×4story building
+66ft-88ft

Overall

25748

Females

10722

F50-54

10722

25K→30K

15.5 - 18.6 mi

Top 87%
×9story building
+181ft-148ft

Overall

24852

Females

10326

F50-54

10326

30K→20M

18.6 - 20.0 mi

Top 90%
×5story building
+64ft-50ft

Overall

25499

Females

10753

F50-54

10753

20M→21M

20.0 - 21.0 mi

Top 84%
×8story building
+106ft-24ft

Overall

23783

Females

9910

F50-54

9910

21M→35K

21.0 - 21.8 mi

Top 90%
×7story building
+17ft-86ft

Overall

25487

Females

10841

F50-54

10841

35K→23M

21.8 - 23.0 mi

Top 91%
×5story building
+23ft-63ft

Overall

25815

Females

11007

F50-54

11007

23M→24M

23.0 - 24.0 mi

Top 87%
×6story building
+12ft-82ft

Overall

24688

Females

10483

F50-54

10483

24M→40K

24.0 - 24.9 mi

Top 85%
×1story
+6ft-20ft

Overall

24117

Females

10228

F50-54

10228

40K→25.2M

24.9 - 25.2 mi

Top 85%
×1story
+13ft-16ft

Overall

24171

Females

10263

F50-54

10263

25.2M→Finish

25.2 - 26.2 mi

Top 89%
×2story building
+22ft-21ft

Overall

25140

Females

10717

F50-54

10717

Passing Analysis

Category:
Athletes Passed
983
Passed By
1103
Net Change
-120
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25232
5K → 10K101370-269#25232#25501
10K → 15K109162-53#25501#25554
15K → 20K132107+25#25554#25529
20K → Half1726-9#25529#25538
Half → 25K77151-74#25538#25612
25K → 30K20454+150#25612#25462
30K → 20M4755-8#25462#25470
20M → 21M8914+75#25470#25395
21M → 35K2631-5#25395#25400
35K → 23M3658-22#25400#25422
23M → 24M4722+25#25422#25397
24M → 40K5616+40#25397#25357
40K → 25.2M198+11#25357#25346
25.2M → Finish2329-6#25346#25352
TOTALS9831103-120
📊

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