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BOSTON MARATHON 2026

Holly Niemczyk

Bib: 31608β€’F

MA

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Overall
#0 / 29021
Gender (Female)
#0 / 12578
Age Group (F18-39)
#0 / 5716
Race Day Weather
51Β°/41Β°F
overcast clouds

Race Timeline and Course Information

Your journey through the course with elevation, pacing, and checkpoint details

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K
31:07
3.11 mi
Rank: #25996
Start β†’ 5K
31:07 | 10:01/mi
10K
1:01:37
6.21 mi
Rank: #25695 (+301)
5K β†’ 10K
30:30 | 9:50/mi
15K
1:31:22
9.32 mi
Rank: #25315 (+380)
10K β†’ 15K
29:45 | 9:35/mi
20K
2:00:44
12.43 mi
Rank: #24899 (+416)
15K β†’ 20K
29:22 | 9:28/mi
HALF
2:08:37
13.11 mi
Rank: #25155 (-256)
20K β†’ HALF
7:53 | 11:34/mi
25K
2:33:47
15.53 mi
Rank: #25137 (+18)
HALF β†’ 25K
25:10 | 10:23/mi
30K
3:05:12
18.64 mi
Rank: #24830 (+307)
25K β†’ 30K
31:25 | 10:07/mi
20M
3:20:26
20.00 mi
Rank: #24858 (-28)
30K β†’ 20M
15:14 | 11:13/mi
21M
3:32:04
21.00 mi
Rank: #24825 (+33)
20M β†’ 21M
11:38 | 11:38/mi
35K
3:39:30
21.75 mi
Rank: #24747 (+78)
21M β†’ 35K
7:26 | 9:57/mi
23M
3:53:09
23.00 mi
Rank: #24732 (+15)
35K β†’ 23M
13:39 | 10:55/mi
24M
4:03:48
24.00 mi
Rank: #24725 (+7)
23M β†’ 24M
10:39 | 10:39/mi
40K
4:13:14
24.85 mi
Rank: #24721 (+4)
24M β†’ 40K
9:26 | 11:02/mi
25.2M
4:17:06
25.20 mi
Rank: #24691 (+30)
40K β†’ 25.2M
3:52 | 11:13/mi
FINISH
4:26:54
26.22 mi
Rank: #24622 (+69)
25.2M β†’ FINISH
9:48 | 9:38/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time2:08:37
Pace9:49 /mi
2nd Half
Distance13.11 mi
Time2:18:17
Pace10:33 /mi
πŸ“ŠPositive Split: 7.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi12:01:1331:0710:0131:07
10:01
-
10K
6.21 mi12:31:431:01:379:5530:30
9:50
-0:11
15K
9.32 mi13:01:281:31:229:4929:45
9:35
-0:15
20K
12.43 mi13:30:502:00:449:4329:22
9:28
-0:07
HALF
13.11 mi13:38:432:08:379:497:53
11:34
+2:06
25K
15.53 mi14:03:532:33:479:5425:10
10:23
-1:11
30K
18.64 mi14:35:183:05:129:5731:25
10:07
-0:16
20M
20.00 mi14:50:323:20:2610:0215:14
11:13
+1:06
21M
21.00 mi15:02:103:32:0410:0611:38
11:38
+0:25
35K
21.75 mi15:09:363:39:3010:067:26
9:57
-1:41
23M
23.00 mi15:23:153:53:0910:0913:39
10:55
+0:58
24M
24.00 mi15:33:544:03:4810:1010:39
10:39
-0:16
40K
24.85 mi15:43:204:13:1410:129:26
11:02
+0:23
25.2M
25.20 mi15:47:124:17:0610:133:52
11:13
+0:11
FINISH
26.22 mi15:57:004:26:5410:129:48
9:38
-1:35

Checkpoint Splits Visualizations

Explore your race data through different visual perspectives. Scroll to discover each visualization.

πŸ“ˆPace 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

9:28 /mi

Average Pace

10:11 /mi

Slowest Pace

11:38 /mi

Loading chart...
Fastest
Middle
Slowest
Average

πŸ“ŠSegments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

2:17:58

52% of race

Time at Steady Pace

1:07:14

25% of race

Time at Slower Pace

1:01:42

23% of race

Average Pace: 10:11 /mi

Loading chart...
Faster pace (< avg)
Steady pace (β‰ˆ 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

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi12:01:1331:0710:0131:07
10:01
#25996
10K
6.21 mi12:31:431:01:379:5530:30
9:50
#25695
15K
9.32 mi13:01:281:31:229:4929:45
9:35
#25315
20K
12.43 mi13:30:502:00:449:4329:22
9:28
#24899
HALF
13.11 mi13:38:432:08:379:497:53
11:34
#25155
25K
15.53 mi14:03:532:33:479:5425:10
10:23
#25137
30K
18.64 mi14:35:183:05:129:5731:25
10:07
#24830
20M
20.00 mi14:50:323:20:2610:0215:14
11:13
#24858
21M
21.00 mi15:02:103:32:0410:0611:38
11:38
#24825
35K
21.75 mi15:09:363:39:3010:067:26
9:57
#24747
23M
23.00 mi15:23:153:53:0910:0913:39
10:55
#24732
24M
24.00 mi15:33:544:03:4810:1010:39
10:39
#24725
40K
24.85 mi15:43:204:13:1410:129:26
11:02
#24721
25.2M
25.20 mi15:47:124:17:0610:133:52
11:13
#24691
FINISH
26.22 mi15:57:004:26:5410:129:48
9:38
#24622
Faster pace
Steady pace
Slower pace

Rankings

Your position at each checkpoint and how you ranked in each segment

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi25996106971069724631(Top 85%)9988(Top 79%)9988(Top 175%)
10K6.21 mi3.10 mi25695+30110559+13810559+13825405(Top 88%)10382(Top 83%)10382(Top 182%)
15K9.32 mi3.11 mi25315+38010353+20610353+20624631(Top 85%)9988(Top 79%)9988(Top 175%)
20K12.43 mi3.11 mi24899+41610126+22710126+22723616(Top 81%)9505(Top 76%)9505(Top 166%)
HALF13.11 mi0.68 mi25155-25610276-15010276-15027929(Top 96%)11910(Top 95%)11910(Top 208%)
25K15.53 mi2.42 mi25137+1810266+1010266+1025186(Top 87%)10329(Top 82%)10329(Top 181%)
30K18.64 mi3.11 mi24830+30710124+14210124+14223412(Top 81%)9516(Top 76%)9516(Top 166%)
20M20.00 mi1.36 mi24858-2810172-4810172-4825293(Top 87%)10603(Top 84%)10603(Top 185%)
21M21.00 mi1.00 mi24825+3310165+710165+724444(Top 84%)10217(Top 81%)10217(Top 179%)
35K21.75 mi0.75 mi24747+7810136+2910136+2923004(Top 79%)9458(Top 75%)9458(Top 165%)
23M23.00 mi1.25 mi24732+1510139-310139-324302(Top 84%)10205(Top 81%)10205(Top 179%)
24M24.00 mi1.00 mi24725+710147-810147-824393(Top 84%)10288(Top 82%)10288(Top 180%)
40K24.85 mi0.85 mi24721+410166-1910166-1924328(Top 84%)10299(Top 82%)10299(Top 180%)
25.2M25.20 mi0.35 mi24691+3010153+1310153+1322926(Top 79%)9569(Top 76%)9569(Top 167%)
FINISH26.22 mi1.02 mi24622+6910133+2010133+2022744(Top 78%)9474(Top 75%)9474(Top 166%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 85%
Γ—21
+97ft-345ft

Overall

24631

Females

9988

F18-39

9988

5K→10K

3.1 - 6.2 mi

Top 88%
Γ—5
+79ft-138ft

Overall

25405

Females

10382

F18-39

10382

10K→15K

6.2 - 9.3 mi

Top 85%
Γ—3
+67ft-78ft

Overall

24631

Females

9988

F18-39

9988

15K→20K

9.3 - 12.4 mi

Top 81%
Γ—5
+106ft-86ft

Overall

23616

Females

9505

F18-39

9505

20K→HALF

12.4 - 13.1 mi

Top 96%
Γ—2
+19ft-37ft

Overall

27929

Females

11910

F18-39

11910

HALF→25K

13.1 - 15.5 mi

Top 87%
Γ—4
+66ft-88ft

Overall

25186

Females

10329

F18-39

10329

25K→30K

15.5 - 18.6 mi

Top 81%
Γ—9
+181ft-148ft

Overall

23412

Females

9516

F18-39

9516

30K→20M

18.6 - 20.0 mi

Top 87%
Γ—5
+64ft-50ft

Overall

25293

Females

10603

F18-39

10603

20M→21M

20.0 - 21.0 mi

Top 84%
Γ—8
+106ft-24ft

Overall

24444

Females

10217

F18-39

10217

21M→35K

21.0 - 21.8 mi

Top 79%
Γ—7
+17ft-86ft

Overall

23004

Females

9458

F18-39

9458

35K→23M

21.8 - 23.0 mi

Top 84%
Γ—5
+23ft-63ft

Overall

24302

Females

10205

F18-39

10205

23M→24M

23.0 - 24.0 mi

Top 84%
Γ—6
+12ft-82ft

Overall

24393

Females

10288

F18-39

10288

24M→40K

24.0 - 24.9 mi

Top 84%
Γ—1
+6ft-20ft

Overall

24328

Females

10299

F18-39

10299

40K→25.2M

24.9 - 25.2 mi

Top 79%
Γ—1
+13ft-16ft

Overall

22926

Females

9569

F18-39

9569

25.2M→FINISH

25.2 - 26.2 mi

Top 78%
Γ—2
+22ft-21ft

Overall

22744

Females

9474

F18-39

9474

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
2094
Passed By
720
Net Change
+1374
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start β†’ 5K----#25996
5K β†’ 10K38887+301#25996#25695
10K β†’ 15K40121+380#25695#25315
15K β†’ 20K4193+416#25315#24899
20K β†’ HALF2258-256#24899#25155
HALF β†’ 25K10183+18#25155#25137
25K β†’ 30K3136+307#25137#24830
30K β†’ 20M5785-28#24830#24858
20M β†’ 21M6633+33#24858#24825
21M β†’ 35K835+78#24825#24747
35K β†’ 23M5742+15#24747#24732
23M β†’ 24M4639+7#24732#24725
24M β†’ 40K4743+4#24725#24721
40K β†’ 25.2M377+30#24721#24691
25.2M β†’ FINISH778+69#24691#24622
TOTALS2094720+1374
πŸ“Š

Passing Analysis Visualizations

Explore your passing analysis through 5 different visualizations. Scroll to discover each one.

Time:
Category:

πŸ“ˆPosition Graph

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🎨Heatmap Timeline

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πŸ”„Passing Circle

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🌊Position Flow

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πŸƒRace Lanes

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Qualifying & Age Grade

See how your performance stacks up against qualifying standards

OTQ

Olympic Trials Qualifying analysis available

Activity Data

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing