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BOSTON MARATHON 2025

Megan Kostyak

Bib: 23062•F

PA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F45-49)
#0 / 1813
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
8:15/mi
25:37
↑ 97↓ 3451.5%
10K· 6.21 mi
8:26/mi
51:48
↑ 79↓ 1380.4%
15K· 9.32 mi
8:40/mi
1:18:44
↑ 67↓ 78
20K· 12.43 mi
8:50/mi
1:46:12
↑ 106↓ 860.1%
Half· 13.11 mi
8:43/mi
1:52:09
↑ 19↓ 370.5%
25K· 15.53 mi
9:03/mi
2:14:05
↑ 66↓ 880.2%
30K· 18.64 mi
9:26/mi
2:43:25
↑ 181↓ 1480.2%
20M
9:22/mi
2:56:09
↑ 64↓ 500.2%
21M
9:58/mi
3:06:07
↑ 106↓ 241.6%
35K· 21.75 mi
9:11/mi
3:12:59
↑ 17↓ 861.7%
23M
9:27/mi
3:24:49
↑ 23↓ 630.6%
24M
9:24/mi
3:34:13
↓ 821.3%
40K· 24.85 mi
9:25/mi
3:42:16
↓ 200.3%
25.2M
10:12/mi
3:45:47
↑ 13↓ 160.2%
Finish· 26.22 mi
8:56/mi
3:54:53
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:52:09
Pace8:33 /mi
2nd Half
Distance13.11 mi
Time2:02:44
Pace9:22 /mi
📊Positive Split: 9.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:23:2225:378:1525:37
8:15
-
10K
6.21 mi11:49:3351:488:2026:11
8:26
+0:11
15K
9.32 mi12:16:291:18:448:2726:56
8:40
+0:14
20K
12.43 mi12:43:571:46:128:3327:28
8:50
+0:10
Half
13.11 mi12:49:541:52:098:335:57
8:43
-0:07
25K
15.53 mi13:11:502:14:058:3821:56
9:03
+0:20
30K
18.64 mi13:41:102:43:258:4629:20
9:26
+0:23
20M
20.00 mi13:53:542:56:098:4812:44
9:22
-0:04
21M
21.00 mi14:03:523:06:078:529:58
9:58
+0:36
35K
21.75 mi14:10:443:12:598:526:52
9:11
-0:47
23M
23.00 mi14:22:343:24:498:5411:50
9:27
+0:16
24M
24.00 mi14:31:583:34:138:569:24
9:24
-0:03
40K
24.85 mi14:40:013:42:168:578:03
9:25
+0:01
25.2M
25.20 mi14:43:323:45:478:583:31
10:12
+0:47
Finish
26.22 mi14:52:383:54:538:589:06
8:56
-1:16

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

8:15 /mi

Average Pace

8:58 /mi

Slowest Pace

10:12 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:52:09

48% of race

Time at Steady Pace

1:37:25

41% of race

Time at Slower Pace

25:19

11% of race

Average Pace: 8:57 /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 mi11:23:2225:378:1525:37
8:15
#18407
10K
6.21 mi11:49:3351:488:2026:11
8:26
#18846
15K
9.32 mi12:16:291:18:448:2726:56
8:40
#19343
20K
12.43 mi12:43:571:46:128:3327:28
8:50
#19568
Half
13.11 mi12:49:541:52:098:335:57
8:43
#19610
25K
15.53 mi13:11:502:14:058:3821:56
9:03
#19689
30K
18.64 mi13:41:102:43:258:4629:20
9:26
#19690
20M
20.00 mi13:53:542:56:098:4812:44
9:22
#19597
21M
21.00 mi14:03:523:06:078:529:58
9:58
#19503
35K
21.75 mi14:10:443:12:598:526:52
9:11
#19489
23M
23.00 mi14:22:343:24:498:5411:50
9:27
#19440
24M
24.00 mi14:31:583:34:138:569:24
9:24
#19435
40K
24.85 mi14:40:013:42:168:578:03
9:25
#19376
25.2M
25.20 mi14:43:323:45:478:583:31
10:12
#19339
Finish
26.22 mi14:52:383:54:538:589:06
8:56
#19312
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi184076586658620300(Top 71%)7595(Top 62%)7595(Top 419%)
10K6.21 mi3.10 mi18846-4396817-2316817-23119365(Top 68%)7090(Top 58%)7090(Top 391%)
15K9.32 mi3.11 mi19343-4977088-2717088-27120300(Top 71%)7595(Top 62%)7595(Top 419%)
20K12.43 mi3.11 mi19568-2257225-1377225-13720164(Top 71%)7572(Top 62%)7572(Top 418%)
Half13.11 mi0.68 mi19610-427253-287253-2820502(Top 72%)7750(Top 63%)7750(Top 427%)
25K15.53 mi2.42 mi19689-797310-577310-5720113(Top 71%)7594(Top 62%)7594(Top 419%)
30K18.64 mi3.11 mi19690-17345-357345-3519711(Top 69%)7505(Top 61%)7505(Top 414%)
20M20.00 mi1.36 mi19597+937317+287317+2818633(Top 66%)7072(Top 58%)7072(Top 390%)
21M21.00 mi1.00 mi19503+947286+317286+3118187(Top 64%)6891(Top 56%)6891(Top 380%)
35K21.75 mi0.75 mi19489+147295-97295-919111(Top 67%)7506(Top 61%)7506(Top 414%)
23M23.00 mi1.25 mi19440+497308-137308-1318489(Top 65%)7231(Top 59%)7231(Top 399%)
24M24.00 mi1.00 mi19435+57325-177325-1719244(Top 68%)7672(Top 63%)7672(Top 423%)
40K24.85 mi0.85 mi19376+597310+157310+1518371(Top 65%)7320(Top 60%)7320(Top 404%)
25.2M25.20 mi0.35 mi19339+377299+117299+1117931(Top 63%)7109(Top 58%)7109(Top 392%)
Finish26.22 mi1.02 mi19312+277303-47303-418693(Top 66%)7428(Top 61%)7428(Top 410%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 71%
×21story building
+97ft-345ft

Overall

20300

Females

7595

F45-49

7595

5K→10K

3.1 - 6.2 mi

Top 68%
×5story building
+79ft-138ft

Overall

19365

Females

7090

F45-49

7090

10K→15K

6.2 - 9.3 mi

Top 71%
×3story building
+67ft-78ft

Overall

20300

Females

7595

F45-49

7595

15K→20K

9.3 - 12.4 mi

Top 71%
×5story building
+106ft-86ft

Overall

20164

Females

7572

F45-49

7572

20K→Half

12.4 - 13.1 mi

Top 72%
×2story building
+19ft-37ft

Overall

20502

Females

7750

F45-49

7750

Half→25K

13.1 - 15.5 mi

Top 71%
×4story building
+66ft-88ft

Overall

20113

Females

7594

F45-49

7594

25K→30K

15.5 - 18.6 mi

Top 69%
×9story building
+181ft-148ft

Overall

19711

Females

7505

F45-49

7505

30K→20M

18.6 - 20.0 mi

Top 66%
×5story building
+64ft-50ft

Overall

18633

Females

7072

F45-49

7072

20M→21M

20.0 - 21.0 mi

Top 64%
×8story building
+106ft-24ft

Overall

18187

Females

6891

F45-49

6891

21M→35K

21.0 - 21.8 mi

Top 67%
×7story building
+17ft-86ft

Overall

19111

Females

7506

F45-49

7506

35K→23M

21.8 - 23.0 mi

Top 65%
×5story building
+23ft-63ft

Overall

18489

Females

7231

F45-49

7231

23M→24M

23.0 - 24.0 mi

Top 68%
×6story building
+12ft-82ft

Overall

19244

Females

7672

F45-49

7672

24M→40K

24.0 - 24.9 mi

Top 65%
×1story
+6ft-20ft

Overall

18371

Females

7320

F45-49

7320

40K→25.2M

24.9 - 25.2 mi

Top 63%
×1story
+13ft-16ft

Overall

17931

Females

7109

F45-49

7109

25.2M→Finish

25.2 - 26.2 mi

Top 66%
×2story building
+22ft-21ft

Overall

18693

Females

7428

F45-49

7428

Passing Analysis

Category:
Athletes Passed
1430
Passed By
2335
Net Change
-905
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18407
5K → 10K107546-439#18407#18846
10K → 15K69566-497#18846#19343
15K → 20K135360-225#19343#19568
20K → Half2264-42#19568#19610
Half → 25K125204-79#19610#19689
25K → 30K232233-1#19689#19690
30K → 20M14855+93#19690#19597
20M → 21M13844+94#19597#19503
21M → 35K6147+14#19503#19489
35K → 23M11465+49#19489#19440
23M → 24M6762+5#19440#19435
24M → 40K9233+59#19435#19376
40K → 25.2M458+37#19376#19339
25.2M → Finish7548+27#19339#19312
TOTALS14302335-905
📊

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