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BOSTON MARATHON 2025

Courtney Kacur

Bib: 14102•F

NY

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Division (F18-39)
#0 / 5469
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
7:07/mi
22:08
↑ 97↓ 3451.5%
10K· 6.21 mi
7:28/mi
45:19
↑ 79↓ 1380.4%
15K· 9.32 mi
8:03/mi
1:10:21
↑ 67↓ 78
20K· 12.43 mi
8:58/mi
1:38:13
↑ 106↓ 860.1%
Half· 13.11 mi
8:40/mi
1:44:08
↑ 19↓ 370.5%
25K· 15.53 mi
11:17/mi
2:11:30
↑ 66↓ 880.2%
30K· 18.64 mi
9:31/mi
2:41:03
↑ 181↓ 1480.2%
20M
9:43/mi
2:54:15
↑ 64↓ 500.2%
21M
10:48/mi
3:05:03
↑ 106↓ 241.6%
35K· 21.75 mi
8:56/mi
3:11:44
↑ 17↓ 861.7%
23M
9:49/mi
3:24:02
↑ 23↓ 630.6%
24M
9:24/mi
3:33:26
↓ 821.3%
40K· 24.85 mi
9:12/mi
3:41:18
↓ 200.3%
25.2M
10:00/mi
3:44:45
↑ 13↓ 160.2%
Finish· 26.22 mi
9:09/mi
3:54:04
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:44:08
Pace7:57 /mi
2nd Half
Distance13.11 mi
Time2:09:56
Pace9:55 /mi
📊Positive Split: 24.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:1922:087:0722:08
7:07
-
10K
6.21 mi11:15:3045:197:1823:11
7:28
+0:21
15K
9.32 mi11:40:321:10:217:3325:02
8:03
+0:35
20K
12.43 mi12:08:241:38:137:5427:52
8:58
+0:55
Half
13.11 mi12:14:191:44:087:575:55
8:40
-0:18
25K
15.53 mi12:41:412:11:308:2827:22
11:17
+2:37
30K
18.64 mi13:11:142:41:038:3829:33
9:31
-1:46
20M
20.00 mi13:24:262:54:158:4313:12
9:43
+0:12
21M
21.00 mi13:35:143:05:038:4910:48
10:48
+1:05
35K
21.75 mi13:41:553:11:448:496:41
8:56
-1:52
23M
23.00 mi13:54:133:24:028:5212:18
9:49
+0:53
24M
24.00 mi14:03:373:33:268:549:24
9:24
-0:25
40K
24.85 mi14:11:293:41:188:547:52
9:12
-0:12
25.2M
25.20 mi14:14:563:44:458:553:27
10:00
+0:48
Finish
26.22 mi14:24:153:54:048:569:19
9:09
-0:51

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

7:07 /mi

Average Pace

8:56 /mi

Slowest Pace

11:17 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:10:21

30% of race

Time at Steady Pace

1:49:48

47% of race

Time at Slower Pace

53:55

23% of race

Average Pace: 8:56 /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 mi10:52:1922:087:0722:08
7:07
#8863
10K
6.21 mi11:15:3045:197:1823:11
7:28
#10292
15K
9.32 mi11:40:321:10:217:3325:02
8:03
#12416
20K
12.43 mi12:08:241:38:137:5427:52
8:58
#15128
Half
13.11 mi12:14:191:44:087:575:55
8:40
#15485
25K
15.53 mi12:41:412:11:308:2827:22
11:17
#18694
30K
18.64 mi13:11:142:41:038:3829:33
9:31
#18986
20M
20.00 mi13:24:262:54:158:4313:12
9:43
#19088
21M
21.00 mi13:35:143:05:038:4910:48
10:48
#19243
35K
21.75 mi13:41:553:11:448:496:41
8:56
#19195
23M
23.00 mi13:54:133:24:028:5212:18
9:49
#19266
24M
24.00 mi14:03:373:33:268:549:24
9:24
#19266
40K
24.85 mi14:11:293:41:188:547:52
9:12
#19186
25.2M
25.20 mi14:14:563:44:458:553:27
10:00
#19131
Finish
26.22 mi14:24:153:54:048:569:19
9:09
#19148
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi88631321132116485(Top 58%)5428(Top 44%)5428(Top 99%)
10K6.21 mi3.10 mi10292-14291956-6351956-63511759(Top 41%)2701(Top 22%)2701(Top 49%)
15K9.32 mi3.11 mi12416-21243061-11053061-110516485(Top 58%)5428(Top 44%)5428(Top 99%)
20K12.43 mi3.11 mi15128-27124652-15914652-159120811(Top 73%)7952(Top 65%)7952(Top 145%)
Half13.11 mi0.68 mi15485-3574854-2024854-20220228(Top 71%)7601(Top 62%)7601(Top 139%)
25K15.53 mi2.42 mi18694-32096745-18916745-189125601(Top 90%)10631(Top 87%)10631(Top 194%)
30K18.64 mi3.11 mi18986-2926940-1956940-19519983(Top 70%)7653(Top 63%)7653(Top 140%)
20M20.00 mi1.36 mi19088-1027030-907030-9019993(Top 70%)7783(Top 64%)7783(Top 142%)
21M21.00 mi1.00 mi19243-1557141-1117141-11120842(Top 73%)8366(Top 68%)8366(Top 153%)
35K21.75 mi0.75 mi19195+487128+137128+1317955(Top 63%)6881(Top 56%)6881(Top 126%)
23M23.00 mi1.25 mi19266-717196-687196-6819885(Top 70%)7989(Top 65%)7989(Top 146%)
24M24.00 mi1.00 mi192667228-327228-3219243(Top 68%)7671(Top 63%)7671(Top 140%)
40K24.85 mi0.85 mi19186+807201+277201+2717384(Top 61%)6802(Top 56%)6802(Top 124%)
25.2M25.20 mi0.35 mi19131+557182+197182+1917136(Top 60%)6674(Top 55%)6674(Top 122%)
Finish26.22 mi1.02 mi19148-177213-317213-3119716(Top 69%)7986(Top 65%)7986(Top 146%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 58%
×21story building
+97ft-345ft

Overall

16485

Females

5428

F18-39

5428

5K→10K

3.1 - 6.2 mi

Top 41%
×5story building
+79ft-138ft

Overall

11759

Females

2701

F18-39

2701

10K→15K

6.2 - 9.3 mi

Top 58%
×3story building
+67ft-78ft

Overall

16485

Females

5428

F18-39

5428

15K→20K

9.3 - 12.4 mi

Top 73%
×5story building
+106ft-86ft

Overall

20811

Females

7952

F18-39

7952

20K→Half

12.4 - 13.1 mi

Top 71%
×2story building
+19ft-37ft

Overall

20228

Females

7601

F18-39

7601

Half→25K

13.1 - 15.5 mi

Top 90%
×4story building
+66ft-88ft

Overall

25601

Females

10631

F18-39

10631

25K→30K

15.5 - 18.6 mi

Top 70%
×9story building
+181ft-148ft

Overall

19983

Females

7653

F18-39

7653

30K→20M

18.6 - 20.0 mi

Top 70%
×5story building
+64ft-50ft

Overall

19993

Females

7783

F18-39

7783

20M→21M

20.0 - 21.0 mi

Top 73%
×8story building
+106ft-24ft

Overall

20842

Females

8366

F18-39

8366

21M→35K

21.0 - 21.8 mi

Top 63%
×7story building
+17ft-86ft

Overall

17955

Females

6881

F18-39

6881

35K→23M

21.8 - 23.0 mi

Top 70%
×5story building
+23ft-63ft

Overall

19885

Females

7989

F18-39

7989

23M→24M

23.0 - 24.0 mi

Top 68%
×6story building
+12ft-82ft

Overall

19243

Females

7671

F18-39

7671

24M→40K

24.0 - 24.9 mi

Top 61%
×1story
+6ft-20ft

Overall

17384

Females

6802

F18-39

6802

40K→25.2M

24.9 - 25.2 mi

Top 60%
×1story
+13ft-16ft

Overall

17136

Females

6674

F18-39

6674

25.2M→Finish

25.2 - 26.2 mi

Top 69%
×2story building
+22ft-21ft

Overall

19716

Females

7986

F18-39

7986

Passing Analysis

Category:
Athletes Passed
758
Passed By
11041
Net Change
-10285
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8863
5K → 10K151442-1429#8863#10292
10K → 15K92133-2124#10292#12416
15K → 20K112723-2712#12416#15128
20K → Half4361-357#15128#15485
Half → 25K23211-3209#15485#18694
25K → 30K154446-292#18694#18986
30K → 20M77179-102#18986#19088
20M → 21M58213-155#19088#19243
21M → 35K7325+48#19243#19195
35K → 23M69140-71#19195#19266
23M → 24M73730#19266#19266
24M → 40K10424+80#19266#19186
40K → 25.2M616+55#19186#19131
25.2M → Finish4865-17#19131#19148
TOTALS75811041-10285
📊

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