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BOSTON MARATHON 2025

Karen Lesiewicz

Bib: 5739•F

IL

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 9%
Gender (Female)
#0 / 12228
Top 1%
Division (F18-39)
#0 / 5469
Top 2%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:48
Rank: #5419
Start → 5K
20:48 | 6:42/mi
10K· 6.21 mi
41:40
Rank: #5433 (-14)
5K → 10K
20:52 | 6:43/mi
15K· 9.32 mi
1:02:14
Rank: #5044 (+389)
10K → 15K
20:34 | 6:37/mi
20K· 12.43 mi
1:22:46
Rank: #4640 (+404)
15K → 20K
20:32 | 6:37/mi
Half· 13.11 mi
1:27:12
Rank: #4575 (+65)
20K → Half
4:26 | 6:30/mi
25K· 15.53 mi
1:43:03
Rank: #4247 (+328)
Half → 25K
15:51 | 6:32/mi
30K· 18.64 mi
2:03:24
Rank: #3764 (+483)
25K → 30K
20:21 | 6:33/mi
20M
2:12:10
Rank: #3538 (+226)
30K → 20M
8:46 | 6:27/mi
21M
2:18:57
Rank: #3351 (+187)
20M → 21M
6:47 | 6:47/mi
35K· 21.75 mi
2:23:31
Rank: #3190 (+161)
21M → 35K
4:34 | 6:06/mi
23M
2:31:31
Rank: #2974 (+216)
35K → 23M
8:00 | 6:23/mi
24M
2:37:35
Rank: #2802 (+172)
23M → 24M
6:04 | 6:04/mi
40K· 24.85 mi
2:42:56
Rank: #2680 (+122)
24M → 40K
5:21 | 6:15/mi
25.2M
2:45:10
Rank: #2614 (+66)
40K → 25.2M
2:14 | 6:29/mi
Finish· 26.22 mi
2:51:46
Rank: #2589 (+25)
25.2M → Finish
6:36 | 6:29/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:27:12
Pace6:39 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:24:34
Pace6:27 /mi
📊Negative Split: 3.0% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:25:3220:486:4220:48
6:42
-
10K
6.21 mi10:46:2441:406:4220:52
6:43
+0:01
15K
9.32 mi11:06:581:02:146:4120:34
6:37
-0:06
20K
12.43 mi11:27:301:22:466:4020:32
6:37
0:00
Half
13.11 mi11:31:561:27:126:394:26
6:30
-0:07
25K
15.53 mi11:47:471:43:036:3815:51
6:32
+0:02
30K
18.64 mi12:08:082:03:246:3720:21
6:33
+0:01
20M
20.00 mi12:16:542:12:106:368:46
6:27
-0:06
21M
21.00 mi12:23:412:18:576:376:47
6:47
+0:20
35K
21.75 mi12:28:152:23:316:364:34
6:06
-0:41
23M
23.00 mi12:36:152:31:316:358:00
6:23
+0:17
24M
24.00 mi12:42:192:37:356:346:04
6:04
-0:19
40K
24.85 mi12:47:402:42:566:335:21
6:15
+0:11
25.2M
25.20 mi12:49:542:45:106:332:14
6:29
+0:14
Finish
26.22 mi12:56:302:51:466:336:36
6:29
0:00

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

6:04 /mi

Average Pace

6:33 /mi

Slowest Pace

6:47 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:03:19

72% of race

Time at Steady Pace

48:27

28% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:33 /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 mi10:25:3220:486:4220:48
6:42
#5419
10K
6.21 mi10:46:2441:406:4220:52
6:43
#5433
15K
9.32 mi11:06:581:02:146:4120:34
6:37
#5044
20K
12.43 mi11:27:301:22:466:4020:32
6:37
#4640
Half
13.11 mi11:31:561:27:126:394:26
6:30
#4575
25K
15.53 mi11:47:471:43:036:3815:51
6:32
#4247
30K
18.64 mi12:08:082:03:246:3720:21
6:33
#3764
20M
20.00 mi12:16:542:12:106:368:46
6:27
#3538
21M
21.00 mi12:23:412:18:576:376:47
6:47
#3351
35K
21.75 mi12:28:152:23:316:364:34
6:06
#3190
23M
23.00 mi12:36:152:31:316:358:00
6:23
#2974
24M
24.00 mi12:42:192:37:356:346:04
6:04
#2802
40K
24.85 mi12:47:402:42:566:335:21
6:15
#2680
25.2M
25.20 mi12:49:542:45:106:332:14
6:29
#2614
Finish
26.22 mi12:56:302:51:466:336:36
6:29
#2589
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi54193743744413(Top 16%)262(Top 2%)262(Top 5%)
10K6.21 mi3.10 mi5433-14391-17391-175500(Top 19%)415(Top 3%)415(Top 8%)
15K9.32 mi3.11 mi5044+389334+57334+574413(Top 16%)262(Top 2%)262(Top 5%)
20K12.43 mi3.11 mi4640+404294+40294+403766(Top 13%)202(Top 2%)202(Top 4%)
Half13.11 mi0.68 mi4575+65287+7287+73725(Top 13%)192(Top 2%)192(Top 4%)
25K15.53 mi2.42 mi4247+328251+36251+363100(Top 11%)153(Top 1%)153(Top 3%)
30K18.64 mi3.11 mi3764+483207+44207+442202(Top 8%)110(Top 0.9%)110(Top 2%)
20M20.00 mi1.36 mi3538+226190+17190+171463(Top 5%)76(Top 0.6%)76(Top 1%)
21M21.00 mi1.00 mi3351+187176+14176+141502(Top 5%)81(Top 0.7%)81(Top 1%)
35K21.75 mi0.75 mi3190+161166+10166+10991(Top 3%)53(Top 0.4%)53(Top 1.0%)
23M23.00 mi1.25 mi2974+216154+12154+121117(Top 4%)59(Top 0.5%)59(Top 1%)
24M24.00 mi1.00 mi2802+172139+15139+15717(Top 3%)40(Top 0.3%)40(Top 0.7%)
40K24.85 mi0.85 mi2680+122134+5134+5890(Top 3%)53(Top 0.4%)53(Top 1.0%)
25.2M25.20 mi0.35 mi2614+66132+2132+2451(Top 2%)30(Top 0.2%)30(Top 0.5%)
Finish26.22 mi1.02 mi2589+251321322670(Top 9%)259(Top 2%)259(Top 5%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 16%
×21stories
+97ft-345ft

Overall

4413

Females

262

F18-39

262

5K→10K

3.1 - 6.2 mi

Top 19%
×5stories
+79ft-138ft

Overall

5500

Females

415

F18-39

415

10K→15K

6.2 - 9.3 mi

Top 16%
×3stories
+67ft-78ft

Overall

4413

Females

262

F18-39

262

15K→20K

9.3 - 12.4 mi

Top 13%
×5stories
+106ft-86ft

Overall

3766

Females

202

F18-39

202

20K→Half

12.4 - 13.1 mi

Top 13%
×2stories
+19ft-37ft

Overall

3725

Females

192

F18-39

192

Half→25K

13.1 - 15.5 mi

Top 11%
×4stories
+66ft-88ft

Overall

3100

Females

153

F18-39

153

25K→30K

15.5 - 18.6 mi

Top 8%
×9stories
+181ft-148ft

Overall

2202

Females

110

F18-39

110

30K→20M

18.6 - 20.0 mi

Top 5%
×5stories
+64ft-50ft

Overall

1463

Females

76

F18-39

76

20M→21M

20.0 - 21.0 mi

Top 5%
×8stories
+106ft-24ft

Overall

1502

Females

81

F18-39

81

21M→35K

21.0 - 21.8 mi

Top 3%
×7stories
+17ft-86ft

Overall

991

Females

53

F18-39

53

35K→23M

21.8 - 23.0 mi

Top 4%
×5stories
+23ft-63ft

Overall

1117

Females

59

F18-39

59

23M→24M

23.0 - 24.0 mi

Top 3%
×6stories
+12ft-82ft

Overall

717

Females

40

F18-39

40

24M→40K

24.0 - 24.9 mi

Top 3%
×1story
+6ft-20ft

Overall

890

Females

53

F18-39

53

40K→25.2M

24.9 - 25.2 mi

Top 2%
×1story
+13ft-16ft

Overall

451

Females

30

F18-39

30

25.2M→Finish

25.2 - 26.2 mi

Top 9%
×2stories
+22ft-21ft

Overall

2670

Females

259

F18-39

259

Passing Analysis

Category:
Athletes Passed
3081
Passed By
251
Net Change
+2830
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5419
5K → 10K179193-14#5419#5433
10K → 15K40920+389#5433#5044
15K → 20K4095+404#5044#4640
20K → Half694+65#4640#4575
Half → 25K3313+328#4575#4247
25K → 30K4830+483#4247#3764
30K → 20M2260+226#3764#3538
20M → 21M1881+187#3538#3351
21M → 35K1610+161#3351#3190
35K → 23M2160+216#3190#2974
23M → 24M1720+172#2974#2802
24M → 40K1264+122#2802#2680
40K → 25.2M660+66#2680#2614
25.2M → Finish4621+25#2614#2589
TOTALS3081251+2830
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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