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BOSTON MARATHON 2025

Katielynn Parker

Bib: 14335•F

TX

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
7:51/mi
24:24
↑ 97↓ 3451.5%
10K· 6.21 mi
7:51/mi
48:48
↑ 79↓ 1380.4%
15K· 9.32 mi
8:20/mi
1:14:42
↑ 67↓ 78
20K· 12.43 mi
9:21/mi
1:43:46
↑ 106↓ 860.1%
Half· 13.11 mi
9:45/mi
1:50:25
↑ 19↓ 370.5%
25K· 15.53 mi
13:03/mi
2:22:04
↑ 66↓ 880.2%
30K· 18.64 mi
12:44/mi
3:01:37
↑ 181↓ 1480.2%
20M
11:42/mi
3:17:31
↑ 64↓ 500.2%
21M
12:11/mi
3:29:42
↑ 106↓ 241.6%
35K· 21.75 mi
10:40/mi
3:37:41
↑ 17↓ 861.7%
23M
10:38/mi
3:51:00
↑ 23↓ 630.6%
24M
12:54/mi
4:03:54
↓ 821.3%
40K· 24.85 mi
13:05/mi
4:15:05
↓ 200.3%
25.2M
15:13/mi
4:20:20
↑ 13↓ 160.2%
Finish· 26.22 mi
18:27/mi
4:39:08
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:50:25
Pace8:25 /mi
2nd Half
Distance13.11 mi
Time2:48:43
Pace12:52 /mi
📊Positive Split: 52.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:54:5124:247:5124:24
7:51
-
10K
6.21 mi11:19:1548:487:5124:24
7:51
0:00
15K
9.32 mi11:45:091:14:428:0125:54
8:20
+0:29
20K
12.43 mi12:14:131:43:468:2129:04
9:21
+1:01
Half
13.11 mi12:20:521:50:258:256:39
9:45
+0:24
25K
15.53 mi12:52:312:22:049:0931:39
13:03
+3:18
30K
18.64 mi13:32:043:01:379:4539:33
12:44
-0:19
20M
20.00 mi13:47:583:17:319:5315:54
11:42
-1:02
21M
21.00 mi14:00:093:29:429:5912:11
12:11
+0:29
35K
21.75 mi14:08:083:37:4110:017:59
10:40
-1:31
23M
23.00 mi14:21:273:51:0010:0313:19
10:38
-0:02
24M
24.00 mi14:34:214:03:5410:1012:54
12:54
+2:16
40K
24.85 mi14:45:324:15:0510:1611:11
13:05
+0:11
25.2M
25.20 mi14:50:474:20:2010:205:15
15:13
+2:08
Finish
26.22 mi15:09:354:39:0810:3918:48
18:27
+3:14

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

7:51 /mi

Average Pace

10:39 /mi

Slowest Pace

18:27 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:50:25

40% of race

Time at Steady Pace

2:24:40

52% of race

Time at Slower Pace

24:03

9% of race

Average Pace: 10:39 /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 mi10:54:5124:247:5124:24
7:51
#15263
10K
6.21 mi11:19:1548:487:5124:24
7:51
#15266
15K
9.32 mi11:45:091:14:428:0125:54
8:20
#16438
20K
12.43 mi12:14:131:43:468:2129:04
9:21
#18310
Half
13.11 mi12:20:521:50:258:256:39
9:45
#18785
25K
15.53 mi12:52:312:22:049:0931:39
13:03
#22214
30K
18.64 mi13:32:043:01:379:4539:33
12:44
#23512
20M
20.00 mi13:47:583:17:319:5315:54
11:42
#23656
21M
21.00 mi14:00:093:29:429:5912:11
12:11
#23687
35K
21.75 mi14:08:083:37:4110:017:59
10:40
#23691
23M
23.00 mi14:21:273:51:0010:0313:19
10:38
#23592
24M
24.00 mi14:34:214:03:5410:1012:54
12:54
#23820
40K
24.85 mi14:45:324:15:0510:1611:11
13:05
#23988
25.2M
25.20 mi14:50:474:20:2010:205:15
15:13
#24094
Finish
26.22 mi15:09:354:39:0810:3918:48
18:27
#24784
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi152634698469818282(Top 64%)6489(Top 53%)6489(Top 119%)
10K6.21 mi3.10 mi15266-34705-74705-715268(Top 54%)4705(Top 38%)4705(Top 86%)
15K9.32 mi3.11 mi16438-11725401-6965401-69618282(Top 64%)6489(Top 53%)6489(Top 119%)
20K12.43 mi3.11 mi18310-18726516-11156516-111522427(Top 79%)8825(Top 72%)8825(Top 161%)
Half13.11 mi0.68 mi18785-4756784-2686784-26824211(Top 85%)9831(Top 80%)9831(Top 180%)
25K15.53 mi2.42 mi22214-34298718-19348718-193427332(Top 96%)11609(Top 95%)11609(Top 212%)
30K18.64 mi3.11 mi23512-12989462-7449462-74426407(Top 93%)11177(Top 91%)11177(Top 204%)
20M20.00 mi1.36 mi23656-1449577-1159577-11524841(Top 87%)10387(Top 85%)10387(Top 190%)
21M21.00 mi1.00 mi23687-319602-259602-2523889(Top 84%)9971(Top 82%)9971(Top 182%)
35K21.75 mi0.75 mi23691-49610-89610-823496(Top 83%)9805(Top 80%)9805(Top 179%)
23M23.00 mi1.25 mi23592+999577+339577+3322352(Top 79%)9259(Top 76%)9259(Top 169%)
24M24.00 mi1.00 mi23820-2289716-1399716-13926728(Top 94%)11495(Top 94%)11495(Top 210%)
40K24.85 mi0.85 mi23988-1689822-1069822-10626364(Top 93%)11321(Top 93%)11321(Top 207%)
25.2M25.20 mi0.35 mi24094-1069885-639885-6327259(Top 96%)11781(Top 96%)11781(Top 215%)
Finish26.22 mi1.02 mi24784-69010255-37010255-37028378(Top 100%)12219(Top 100%)12219(Top 223%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 64%
×21story building
+97ft-345ft

Overall

18282

Females

6489

F18-39

6489

5K→10K

3.1 - 6.2 mi

Top 54%
×5story building
+79ft-138ft

Overall

15268

Females

4705

F18-39

4705

10K→15K

6.2 - 9.3 mi

Top 64%
×3story building
+67ft-78ft

Overall

18282

Females

6489

F18-39

6489

15K→20K

9.3 - 12.4 mi

Top 79%
×5story building
+106ft-86ft

Overall

22427

Females

8825

F18-39

8825

20K→Half

12.4 - 13.1 mi

Top 85%
×2story building
+19ft-37ft

Overall

24211

Females

9831

F18-39

9831

Half→25K

13.1 - 15.5 mi

Top 96%
×4story building
+66ft-88ft

Overall

27332

Females

11609

F18-39

11609

25K→30K

15.5 - 18.6 mi

Top 93%
×9story building
+181ft-148ft

Overall

26407

Females

11177

F18-39

11177

30K→20M

18.6 - 20.0 mi

Top 87%
×5story building
+64ft-50ft

Overall

24841

Females

10387

F18-39

10387

20M→21M

20.0 - 21.0 mi

Top 84%
×8story building
+106ft-24ft

Overall

23889

Females

9971

F18-39

9971

21M→35K

21.0 - 21.8 mi

Top 83%
×7story building
+17ft-86ft

Overall

23496

Females

9805

F18-39

9805

35K→23M

21.8 - 23.0 mi

Top 79%
×5story building
+23ft-63ft

Overall

22352

Females

9259

F18-39

9259

23M→24M

23.0 - 24.0 mi

Top 94%
×6story building
+12ft-82ft

Overall

26728

Females

11495

F18-39

11495

24M→40K

24.0 - 24.9 mi

Top 93%
×1story
+6ft-20ft

Overall

26364

Females

11321

F18-39

11321

40K→25.2M

24.9 - 25.2 mi

Top 96%
×1story
+13ft-16ft

Overall

27259

Females

11781

F18-39

11781

25.2M→Finish

25.2 - 26.2 mi

Top 100%
×2story building
+22ft-21ft

Overall

28378

Females

12219

F18-39

12219

Passing Analysis

Category:
Athletes Passed
631
Passed By
10152
Net Change
-9521
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15263
5K → 10K289292-3#15263#15266
10K → 15K281200-1172#15266#16438
15K → 20K141886-1872#16438#18310
20K → Half1476-475#18310#18785
Half → 25K13430-3429#18785#22214
25K → 30K141312-1298#22214#23512
30K → 20M40184-144#23512#23656
20M → 21M6394-31#23656#23687
21M → 35K4044-4#23687#23691
35K → 23M11718+99#23691#23592
23M → 24M8236-228#23592#23820
24M → 40K13181-168#23820#23988
40K → 25.2M1107-106#23988#24094
25.2M → Finish2692-690#24094#24784
TOTALS63110152-9521
📊

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