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BOSTON MARATHON 2026

David Kilfoil

Bib: 27041•M

MA

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Overall
#0 / 29021
Gender (Male)
#0 / 16340
Age Group (M18-39)
#0 / 5723
Race Day Weather
51°/41°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
40:55
3.11 mi
Rank: #28992
Start → 5K
40:55 | 13:11/mi
10K
1:21:19
6.21 mi
Rank: #28979 (+13)
5K → 10K
40:24 | 13:01/mi
15K
2:02:24
9.32 mi
Rank: #28966 (+13)
10K → 15K
41:05 | 13:14/mi
20K
2:42:52
12.43 mi
Rank: #28941 (+25)
15K → 20K
40:28 | 13:02/mi
HALF
2:51:23
13.11 mi
Rank: #28934 (+7)
20K → HALF
8:31 | 12:30/mi
25K
3:23:25
15.53 mi
Rank: #28882 (+52)
HALF → 25K
32:02 | 13:13/mi
30K
4:07:46
18.64 mi
Rank: #28859 (+23)
25K → 30K
44:21 | 14:17/mi
20M
4:27:28
20.00 mi
Rank: #28847 (+12)
30K → 20M
19:42 | 14:31/mi
21M
4:43:08
21.00 mi
Rank: #28848 (-1)
20M → 21M
15:40 | 15:40/mi
35K
4:53:52
21.75 mi
Rank: #28843 (+5)
21M → 35K
10:44 | 14:21/mi
23M
5:12:24
23.00 mi
Rank: #28847 (-4)
35K → 23M
18:32 | 14:49/mi
24M
5:26:43
24.00 mi
Rank: #28856 (-9)
23M → 24M
14:19 | 14:19/mi
40K
5:39:28
24.85 mi
Rank: #28859 (-3)
24M → 40K
12:45 | 14:55/mi
25.2M
5:44:40
25.20 mi
Rank: #28854 (+5)
40K → 25.2M
5:12 | 15:05/mi
FINISH
5:57:12
26.22 mi
Rank: #28832 (+22)
25.2M → FINISH
12:32 | 12:18/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time2:51:23
Pace13:05 /mi
2nd Half
Distance13.11 mi
Time3:05:49
Pace14:11 /mi
📊Positive Split: 8.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi12:02:1240:5513:1140:55
13:11
-
10K
6.21 mi12:42:361:21:1913:0640:24
13:01
-0:10
15K
9.32 mi13:23:412:02:2413:0841:05
13:14
+0:13
20K
12.43 mi14:04:092:42:5213:0740:28
13:02
-0:12
HALF
13.11 mi14:12:402:51:2313:058:31
12:30
-0:32
25K
15.53 mi14:44:423:23:2513:0632:02
13:13
+0:43
30K
18.64 mi15:29:034:07:4613:1844:21
14:17
+1:04
20M
20.00 mi15:48:454:27:2813:2319:42
14:31
+0:14
21M
21.00 mi16:04:254:43:0813:2915:40
15:40
+1:09
35K
21.75 mi16:15:094:53:5213:3110:44
14:21
-1:19
23M
23.00 mi16:33:415:12:2413:3518:32
14:49
+0:28
24M
24.00 mi16:48:005:26:4313:3714:19
14:19
-0:30
40K
24.85 mi17:00:455:39:2813:4012:45
14:55
+0:36
25.2M
25.20 mi17:05:575:44:4013:415:12
15:05
+0:10
FINISH
26.22 mi17:18:295:57:1213:3912:32
12:18
-2:47

Checkpoint Splits Visualizations

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

📈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

12:18 /mi

Average Pace

13:38 /mi

Slowest Pace

15:40 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

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

3:35:57

60% of race

Time at Steady Pace

1:29:06

25% of race

Time at Slower Pace

52:09

15% of race

Average Pace: 13:37 /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

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi12:02:1240:5513:1140:55
13:11
#28992
10K
6.21 mi12:42:361:21:1913:0640:24
13:01
#28979
15K
9.32 mi13:23:412:02:2413:0841:05
13:14
#28966
20K
12.43 mi14:04:092:42:5213:0740:28
13:02
#28941
HALF
13.11 mi14:12:402:51:2313:058:31
12:30
#28934
25K
15.53 mi14:44:423:23:2513:0632:02
13:13
#28882
30K
18.64 mi15:29:034:07:4613:1844:21
14:17
#28859
20M
20.00 mi15:48:454:27:2813:2319:42
14:31
#28847
21M
21.00 mi16:04:254:43:0813:2915:40
15:40
#28848
35K
21.75 mi16:15:094:53:5213:3110:44
14:21
#28843
23M
23.00 mi16:33:415:12:2413:3518:32
14:49
#28847
24M
24.00 mi16:48:005:26:4313:3714:19
14:19
#28856
40K
24.85 mi17:00:455:39:2813:4012:45
14:55
#28859
25.2M
25.20 mi17:05:575:44:4013:415:12
15:05
#28854
FINISH
26.22 mi17:18:295:57:1213:3912:32
12:18
#28832
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi28992163271632728890(Top 100%)16294(Top 100%)16294(Top 285%)
10K6.21 mi3.10 mi28979+1316323+416323+428930(Top 100%)16306(Top 100%)16306(Top 285%)
15K9.32 mi3.11 mi28966+1316320+316320+328890(Top 100%)16294(Top 100%)16294(Top 285%)
20K12.43 mi3.11 mi28941+2516312+816312+828630(Top 99%)16192(Top 99%)16192(Top 283%)
HALF13.11 mi0.68 mi28934+716309+316309+328525(Top 98%)16136(Top 99%)16136(Top 282%)
25K15.53 mi2.42 mi28882+5216292+1716292+1728352(Top 98%)16083(Top 98%)16083(Top 281%)
30K18.64 mi3.11 mi28859+2316283+916283+928501(Top 98%)16104(Top 99%)16104(Top 281%)
20M20.00 mi1.36 mi28847+1216274+916274+928395(Top 98%)16044(Top 98%)16044(Top 280%)
21M21.00 mi1.00 mi28848-116275-116275-128431(Top 98%)16034(Top 98%)16034(Top 280%)
35K21.75 mi0.75 mi28843+516269+616269+628500(Top 98%)16053(Top 98%)16053(Top 280%)
23M23.00 mi1.25 mi28847-416270-116270-128578(Top 98%)16091(Top 98%)16091(Top 281%)
24M24.00 mi1.00 mi28856-916271-116271-128490(Top 98%)16036(Top 98%)16036(Top 280%)
40K24.85 mi0.85 mi28859-316269+216269+228412(Top 98%)15987(Top 98%)15987(Top 279%)
25.2M25.20 mi0.35 mi28854+5162691626927984(Top 96%)15763(Top 96%)15763(Top 275%)
FINISH26.22 mi1.02 mi28832+2216261+816261+827735(Top 96%)15653(Top 96%)15653(Top 274%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 100%
×21
+97ft-345ft

Overall

28890

Males

16294

M18-39

16294

5K→10K

3.1 - 6.2 mi

Top 100%
×5
+79ft-138ft

Overall

28930

Males

16306

M18-39

16306

10K→15K

6.2 - 9.3 mi

Top 100%
×3
+67ft-78ft

Overall

28890

Males

16294

M18-39

16294

15K→20K

9.3 - 12.4 mi

Top 99%
×5
+106ft-86ft

Overall

28630

Males

16192

M18-39

16192

20K→HALF

12.4 - 13.1 mi

Top 98%
×2
+19ft-37ft

Overall

28525

Males

16136

M18-39

16136

HALF→25K

13.1 - 15.5 mi

Top 98%
×4
+66ft-88ft

Overall

28352

Males

16083

M18-39

16083

25K→30K

15.5 - 18.6 mi

Top 98%
×9
+181ft-148ft

Overall

28501

Males

16104

M18-39

16104

30K→20M

18.6 - 20.0 mi

Top 98%
×5
+64ft-50ft

Overall

28395

Males

16044

M18-39

16044

20M→21M

20.0 - 21.0 mi

Top 98%
×8
+106ft-24ft

Overall

28431

Males

16034

M18-39

16034

21M→35K

21.0 - 21.8 mi

Top 98%
×7
+17ft-86ft

Overall

28500

Males

16053

M18-39

16053

35K→23M

21.8 - 23.0 mi

Top 98%
×5
+23ft-63ft

Overall

28578

Males

16091

M18-39

16091

23M→24M

23.0 - 24.0 mi

Top 98%
×6
+12ft-82ft

Overall

28490

Males

16036

M18-39

16036

24M→40K

24.0 - 24.9 mi

Top 98%
×1
+6ft-20ft

Overall

28412

Males

15987

M18-39

15987

40K→25.2M

24.9 - 25.2 mi

Top 96%
×1
+13ft-16ft

Overall

27984

Males

15763

M18-39

15763

25.2M→FINISH

25.2 - 26.2 mi

Top 96%
×2
+22ft-21ft

Overall

27735

Males

15653

M18-39

15653

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
231
Passed By
71
Net Change
+160
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#28992
5K → 10K185+13#28992#28979
10K → 15K163+13#28979#28966
15K → 20K261+25#28966#28941
20K → HALF70+7#28941#28934
HALF → 25K520+52#28934#28882
25K → 30K307+23#28882#28859
30K → 20M197+12#28859#28847
20M → 21M89-1#28847#28848
21M → 35K116+5#28848#28843
35K → 23M711-4#28843#28847
23M → 24M110-9#28847#28856
24M → 40K811-3#28856#28859
40K → 25.2M61+5#28859#28854
25.2M → FINISH220+22#28854#28832
TOTALS23171+160
📊

Passing Analysis Visualizations

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

Time:
Category:

📈Position Graph

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🎨Heatmap Timeline

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🔄Passing Circle

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🌊Position Flow

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🏃Race 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