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BOSTON MARATHON 2025

Kira Niedens

Bib: 20663•F

OR

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0:00
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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

Start
0:00:00
Race begins
5K· 3.11 mi
29:48
Rank: #24538
Start → 5K
29:48 | 9:36/mi
10K· 6.21 mi
59:30
Rank: #24391 (+147)
5K → 10K
29:42 | 9:34/mi
15K· 9.32 mi
1:29:42
Rank: #24375 (+16)
10K → 15K
30:12 | 9:43/mi
20K· 12.43 mi
2:00:23
Rank: #24272 (+103)
15K → 20K
30:41 | 9:53/mi
Half· 13.11 mi
2:06:57
Rank: #24255 (+17)
20K → Half
6:34 | 9:37/mi
25K· 15.53 mi
2:31:34
Rank: #24119 (+136)
Half → 25K
24:37 | 10:09/mi
30K· 18.64 mi
3:04:01
Rank: #23876 (+243)
25K → 30K
32:27 | 10:27/mi
20M
3:18:07
Rank: #23749 (+127)
30K → 20M
14:06 | 10:23/mi
21M
3:29:14
Rank: #23621 (+128)
20M → 21M
11:07 | 11:07/mi
35K· 21.75 mi
3:36:27
Rank: #23516 (+105)
21M → 35K
7:13 | 9:39/mi
23M
3:49:32
Rank: #23417 (+99)
35K → 23M
13:05 | 10:27/mi
24M
3:59:37
Rank: #23338 (+79)
23M → 24M
10:05 | 10:05/mi
40K· 24.85 mi
4:08:08
Rank: #23214 (+124)
24M → 40K
8:31 | 9:58/mi
25.2M
4:11:55
Rank: #23173 (+41)
40K → 25.2M
3:47 | 10:58/mi
Finish· 26.22 mi
4:21:42
Rank: #23132 (+41)
25.2M → Finish
9:47 | 9:36/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:06:57
Pace9:41 /mi
2nd Half
Distance13.11 mi
Time2:14:45
Pace10:17 /mi
📊Positive Split: 6.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:24:0229:489:3629:48
9:36
-
10K
6.21 mi11:53:4459:309:3529:42
9:34
-0:02
15K
9.32 mi12:23:561:29:429:3730:12
9:43
+0:09
20K
12.43 mi12:54:372:00:239:4130:41
9:53
+0:10
Half
13.11 mi13:01:112:06:579:416:34
9:37
-0:16
25K
15.53 mi13:25:482:31:349:4524:37
10:09
+0:32
30K
18.64 mi13:58:153:04:019:5232:27
10:27
+0:18
20M
20.00 mi14:12:213:18:079:5414:06
10:23
-0:04
21M
21.00 mi14:23:283:29:149:5811:07
11:07
+0:44
35K
21.75 mi14:30:413:36:279:577:13
9:39
-1:28
23M
23.00 mi14:43:463:49:329:5913:05
10:27
+0:48
24M
24.00 mi14:53:513:59:379:5910:05
10:05
-0:22
40K
24.85 mi15:02:224:08:089:598:31
9:58
-0:07
25.2M
25.20 mi15:06:094:11:5510:003:47
10:58
+1:00
Finish
26.22 mi15:15:564:21:429:599:47
9:36
-1:22

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

9:34 /mi

Average Pace

9:59 /mi

Slowest Pace

11:07 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

4:06:48

94% of race

Time at Steady Pace

14:54

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 9:59 /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 mi11:24:0229:489:3629:48
9:36
#24538
10K
6.21 mi11:53:4459:309:3529:42
9:34
#24391
15K
9.32 mi12:23:561:29:429:3730:12
9:43
#24375
20K
12.43 mi12:54:372:00:239:4130:41
9:53
#24272
Half
13.11 mi13:01:112:06:579:416:34
9:37
#24255
25K
15.53 mi13:25:482:31:349:4524:37
10:09
#24119
30K
18.64 mi13:58:153:04:019:5232:27
10:27
#23876
20M
20.00 mi14:12:213:18:079:5414:06
10:23
#23749
21M
21.00 mi14:23:283:29:149:5811:07
11:07
#23621
35K
21.75 mi14:30:413:36:279:577:13
9:39
#23516
23M
23.00 mi14:43:463:49:329:5913:05
10:27
#23417
24M
24.00 mi14:53:513:59:379:5910:05
10:05
#23338
40K
24.85 mi15:02:224:08:089:598:31
9:58
#23214
25.2M
25.20 mi15:06:094:11:5510:003:47
10:58
#23173
Finish
26.22 mi15:15:564:21:429:599:47
9:36
#23132
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi245389978997824339(Top 86%)9867(Top 81%)9867(Top 180%)
10K6.21 mi3.10 mi24391+1479892+869892+8624260(Top 85%)9838(Top 80%)9838(Top 180%)
15K9.32 mi3.11 mi24375+169890+29890+224339(Top 86%)9867(Top 81%)9867(Top 180%)
20K12.43 mi3.11 mi24272+1039844+469844+4623958(Top 84%)9680(Top 79%)9680(Top 177%)
Half13.11 mi0.68 mi24255+179837+79837+723927(Top 84%)9660(Top 79%)9660(Top 177%)
25K15.53 mi2.42 mi24119+1369771+669771+6623620(Top 83%)9541(Top 78%)9541(Top 174%)
30K18.64 mi3.11 mi23876+2439666+1059666+10522812(Top 80%)9221(Top 75%)9221(Top 169%)
20M20.00 mi1.36 mi23749+1279619+479619+4722100(Top 78%)8953(Top 73%)8953(Top 164%)
21M21.00 mi1.00 mi23621+1289567+529567+5221711(Top 76%)8820(Top 72%)8820(Top 161%)
35K21.75 mi0.75 mi23516+1059521+469521+4620867(Top 73%)8437(Top 69%)8437(Top 154%)
23M23.00 mi1.25 mi23417+999484+379484+3721898(Top 77%)9018(Top 74%)9018(Top 165%)
24M24.00 mi1.00 mi23338+799461+239461+2321611(Top 76%)8920(Top 73%)8920(Top 163%)
40K24.85 mi0.85 mi23214+1249422+399422+3920374(Top 72%)8354(Top 68%)8354(Top 153%)
25.2M25.20 mi0.35 mi23173+419403+199403+1920603(Top 73%)8481(Top 69%)8481(Top 155%)
Finish26.22 mi1.02 mi23132+419394+99394+921576(Top 76%)8952(Top 73%)8952(Top 164%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 86%
×21stories
+97ft-345ft

Overall

24339

Females

9867

F18-39

9867

5K→10K

3.1 - 6.2 mi

Top 85%
×5stories
+79ft-138ft

Overall

24260

Females

9838

F18-39

9838

10K→15K

6.2 - 9.3 mi

Top 86%
×3stories
+67ft-78ft

Overall

24339

Females

9867

F18-39

9867

15K→20K

9.3 - 12.4 mi

Top 84%
×5stories
+106ft-86ft

Overall

23958

Females

9680

F18-39

9680

20K→Half

12.4 - 13.1 mi

Top 84%
×2stories
+19ft-37ft

Overall

23927

Females

9660

F18-39

9660

Half→25K

13.1 - 15.5 mi

Top 83%
×4stories
+66ft-88ft

Overall

23620

Females

9541

F18-39

9541

25K→30K

15.5 - 18.6 mi

Top 80%
×9stories
+181ft-148ft

Overall

22812

Females

9221

F18-39

9221

30K→20M

18.6 - 20.0 mi

Top 78%
×5stories
+64ft-50ft

Overall

22100

Females

8953

F18-39

8953

20M→21M

20.0 - 21.0 mi

Top 76%
×8stories
+106ft-24ft

Overall

21711

Females

8820

F18-39

8820

21M→35K

21.0 - 21.8 mi

Top 73%
×7stories
+17ft-86ft

Overall

20867

Females

8437

F18-39

8437

35K→23M

21.8 - 23.0 mi

Top 77%
×5stories
+23ft-63ft

Overall

21898

Females

9018

F18-39

9018

23M→24M

23.0 - 24.0 mi

Top 76%
×6stories
+12ft-82ft

Overall

21611

Females

8920

F18-39

8920

24M→40K

24.0 - 24.9 mi

Top 72%
×1story
+6ft-20ft

Overall

20374

Females

8354

F18-39

8354

40K→25.2M

24.9 - 25.2 mi

Top 73%
×1story
+13ft-16ft

Overall

20603

Females

8481

F18-39

8481

25.2M→Finish

25.2 - 26.2 mi

Top 76%
×2stories
+22ft-21ft

Overall

21576

Females

8952

F18-39

8952

Passing Analysis

Category:
Athletes Passed
1982
Passed By
576
Net Change
+1406
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24538
5K → 10K290143+147#24538#24391
10K → 15K150134+16#24391#24375
15K → 20K18885+103#24375#24272
20K → Half3316+17#24272#24255
Half → 25K18145+136#24255#24119
25K → 30K29350+243#24119#23876
30K → 20M14821+127#23876#23749
20M → 21M14517+128#23749#23621
21M → 35K1094+105#23621#23516
35K → 23M12021+99#23516#23417
23M → 24M9718+79#23417#23338
24M → 40K1251+124#23338#23214
40K → 25.2M454+41#23214#23173
25.2M → Finish5817+41#23173#23132
TOTALS1982576+1406
📊

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