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BOSTON MARATHON 2025

Colleen Kostiak

Bib: 24390•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 (F55-59)
#0 / 994
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
8:49/mi
27:25
↑ 97↓ 3451.5%
10K· 6.21 mi
8:58/mi
55:17
↑ 79↓ 1380.4%
15K· 9.32 mi
8:56/mi
1:23:03
↑ 67↓ 78
20K· 12.43 mi
9:04/mi
1:51:12
↑ 106↓ 860.1%
Half· 13.11 mi
8:52/mi
1:57:15
↑ 19↓ 370.5%
25K· 15.53 mi
9:13/mi
2:19:36
↑ 66↓ 880.2%
30K· 18.64 mi
9:46/mi
2:49:57
↑ 181↓ 1480.2%
20M
9:52/mi
3:03:22
↑ 64↓ 500.2%
21M
11:15/mi
3:14:37
↑ 106↓ 241.6%
35K· 21.75 mi
9:55/mi
3:22:02
↑ 17↓ 861.7%
23M
11:36/mi
3:36:34
↑ 23↓ 630.6%
24M
10:58/mi
3:47:32
↓ 821.3%
40K· 24.85 mi
11:10/mi
3:57:05
↓ 200.3%
25.2M
15:22/mi
4:02:23
↑ 13↓ 160.2%
Finish· 26.22 mi
10:54/mi
4:13:29
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:57:15
Pace8:57 /mi
2nd Half
Distance13.11 mi
Time2:16:14
Pace10:24 /mi
📊Positive Split: 16.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:26:1427:258:4927:25
8:49
-
10K
6.21 mi11:54:0655:178:5427:52
8:58
+0:09
15K
9.32 mi12:21:521:23:038:5527:46
8:56
-0:02
20K
12.43 mi12:50:011:51:128:5728:09
9:04
+0:08
Half
13.11 mi12:56:041:57:158:576:03
8:52
-0:12
25K
15.53 mi13:18:252:19:368:5922:21
9:13
+0:21
30K
18.64 mi13:48:462:49:579:0730:21
9:46
+0:33
20M
20.00 mi14:02:113:03:229:1013:25
9:52
+0:06
21M
21.00 mi14:13:263:14:379:1611:15
11:15
+1:23
35K
21.75 mi14:20:513:22:029:177:25
9:55
-1:20
23M
23.00 mi14:35:233:36:349:2514:32
11:36
+1:41
24M
24.00 mi14:46:213:47:329:2910:58
10:58
-0:38
40K
24.85 mi14:55:543:57:059:329:33
11:10
+0:12
25.2M
25.20 mi15:01:124:02:239:375:18
15:22
+4:12
Finish
26.22 mi15:12:184:13:299:4011:06
10:54
-4:28

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

8:49 /mi

Average Pace

9:40 /mi

Slowest Pace

15:22 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:29:06

35% of race

Time at Steady Pace

1:41:41

40% of race

Time at Slower Pace

1:02:42

25% of race

Average Pace: 9:40 /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 mi11:26:1427:258:4927:25
8:49
#21651
10K
6.21 mi11:54:0655:178:5427:52
8:58
#21947
15K
9.32 mi12:21:521:23:038:5527:46
8:56
#21866
20K
12.43 mi12:50:011:51:128:5728:09
9:04
#21700
Half
13.11 mi12:56:041:57:158:576:03
8:52
#21666
25K
15.53 mi13:18:252:19:368:5922:21
9:13
#21497
30K
18.64 mi13:48:462:49:579:0730:21
9:46
#21397
20M
20.00 mi14:02:113:03:229:1013:25
9:52
#21326
21M
21.00 mi14:13:263:14:379:1611:15
11:15
#21392
35K
21.75 mi14:20:513:22:029:177:25
9:55
#21419
23M
23.00 mi14:35:233:36:349:2514:32
11:36
#21669
24M
24.00 mi14:46:213:47:329:2910:58
10:58
#21796
40K
24.85 mi14:55:543:57:059:329:33
11:10
#21873
25.2M
25.20 mi15:01:124:02:239:375:18
15:22
#22040
Finish
26.22 mi15:12:184:13:299:4011:06
10:54
#22175
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi3.11 mi216518436843621752(Top 77%)8410(Top 69%)8410(Top 846%)
10K6.21 mi3.10 mi21947-2968578-1428578-14222257(Top 78%)8742(Top 71%)8742(Top 879%)
15K9.32 mi3.11 mi21866+818527+518527+5121752(Top 77%)8410(Top 69%)8410(Top 846%)
20K12.43 mi3.11 mi21700+1668438+898438+8921279(Top 75%)8192(Top 67%)8192(Top 824%)
Half13.11 mi0.68 mi21666+348416+228416+2221295(Top 75%)8209(Top 67%)8209(Top 826%)
25K15.53 mi2.42 mi21497+1698320+968320+9620857(Top 73%)8014(Top 66%)8014(Top 806%)
30K18.64 mi3.11 mi21397+1008301+198301+1920898(Top 74%)8176(Top 67%)8176(Top 823%)
20M20.00 mi1.36 mi21326+718285+168285+1620548(Top 72%)8112(Top 66%)8112(Top 816%)
21M21.00 mi1.00 mi21392-668330-458330-4522051(Top 78%)8997(Top 74%)8997(Top 905%)
35K21.75 mi0.75 mi21419-278362-328362-3221678(Top 76%)8865(Top 72%)8865(Top 892%)
23M23.00 mi1.25 mi21669-2508531-1698531-16924433(Top 86%)10310(Top 84%)10310(Top 1037%)
24M24.00 mi1.00 mi21796-1278628-978628-9723931(Top 84%)10078(Top 82%)10078(Top 1014%)
40K24.85 mi0.85 mi21873-778691-638691-6323502(Top 83%)9944(Top 81%)9944(Top 1000%)
25.2M25.20 mi0.35 mi22040-1678785-948785-9427381(Top 96%)11836(Top 97%)11836(Top 1191%)
Finish26.22 mi1.02 mi22175-1358880-958880-9525165(Top 89%)10726(Top 88%)10726(Top 1079%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 77%
×21story building
+97ft-345ft

Overall

21752

Females

8410

F55-59

8410

5K→10K

3.1 - 6.2 mi

Top 78%
×5story building
+79ft-138ft

Overall

22257

Females

8742

F55-59

8742

10K→15K

6.2 - 9.3 mi

Top 77%
×3story building
+67ft-78ft

Overall

21752

Females

8410

F55-59

8410

15K→20K

9.3 - 12.4 mi

Top 75%
×5story building
+106ft-86ft

Overall

21279

Females

8192

F55-59

8192

20K→Half

12.4 - 13.1 mi

Top 75%
×2story building
+19ft-37ft

Overall

21295

Females

8209

F55-59

8209

Half→25K

13.1 - 15.5 mi

Top 73%
×4story building
+66ft-88ft

Overall

20857

Females

8014

F55-59

8014

25K→30K

15.5 - 18.6 mi

Top 74%
×9story building
+181ft-148ft

Overall

20898

Females

8176

F55-59

8176

30K→20M

18.6 - 20.0 mi

Top 72%
×5story building
+64ft-50ft

Overall

20548

Females

8112

F55-59

8112

20M→21M

20.0 - 21.0 mi

Top 78%
×8story building
+106ft-24ft

Overall

22051

Females

8997

F55-59

8997

21M→35K

21.0 - 21.8 mi

Top 76%
×7story building
+17ft-86ft

Overall

21678

Females

8865

F55-59

8865

35K→23M

21.8 - 23.0 mi

Top 86%
×5story building
+23ft-63ft

Overall

24433

Females

10310

F55-59

10310

23M→24M

23.0 - 24.0 mi

Top 84%
×6story building
+12ft-82ft

Overall

23931

Females

10078

F55-59

10078

24M→40K

24.0 - 24.9 mi

Top 83%
×1story
+6ft-20ft

Overall

23502

Females

9944

F55-59

9944

40K→25.2M

24.9 - 25.2 mi

Top 96%
×1story
+13ft-16ft

Overall

27381

Females

11836

F55-59

11836

25.2M→Finish

25.2 - 26.2 mi

Top 89%
×2story building
+22ft-21ft

Overall

25165

Females

10726

F55-59

10726

Passing Analysis

Category:
Athletes Passed
1529
Passed By
2053
Net Change
-524
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21651
5K → 10K153449-296#21651#21947
10K → 15K232151+81#21947#21866
15K → 20K275109+166#21866#21700
20K → Half5117+34#21700#21666
Half → 25K23263+169#21666#21497
25K → 30K243143+100#21497#21397
30K → 20M12958+71#21397#21326
20M → 21M57123-66#21326#21392
21M → 35K4168-27#21392#21419
35K → 23M43293-250#21419#21669
23M → 24M20147-127#21669#21796
24M → 40K30107-77#21796#21873
40K → 25.2M1168-167#21873#22040
25.2M → Finish22157-135#22040#22175
TOTALS15292053-524
📊

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