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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing
BOSTON MARATHON 2026

Chapin Alf

Bib: 28733 •M •Age: N/A

MA

Boston Marathon logo
0:00
0:00
/ mi
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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
24:21
3.11 mi
Rank: #15716
Start → 5K
24:21 | 7:51/mi
10K
48:36
6.21 mi
Rank: #15681 (+35)
5K → 10K
24:15 | 7:49/mi
15K
1:13:06
9.32 mi
Rank: #15784 (-103)
10K → 15K
24:30 | 7:54/mi
20K
1:38:02
12.43 mi
Rank: #15908 (-124)
15K → 20K
24:56 | 8:02/mi
HALF
1:43:16
13.11 mi
Rank: #15829 (+79)
20K → HALF
5:14 | 7:41/mi
25K
2:02:51
15.53 mi
Rank: #15841 (-12)
HALF → 25K
19:35 | 8:05/mi
30K
2:28:12
18.64 mi
Rank: #15597 (+244)
25K → 30K
25:21 | 8:10/mi
20M
2:39:23
20.00 mi
Rank: #15505 (+92)
30K → 20M
11:11 | 8:14/mi
21M
2:47:54
21.00 mi
Rank: #15326 (+179)
20M → 21M
8:31 | 8:31/mi
35K
2:53:54
21.75 mi
Rank: #15279 (+47)
21M → 35K
6:00 | 8:02/mi
23M
3:04:27
23.00 mi
Rank: #15280 (-1)
35K → 23M
10:33 | 8:26/mi
24M
3:12:29
24.00 mi
Rank: #15208 (+72)
23M → 24M
8:02 | 8:02/mi
40K
3:19:32
24.85 mi
Rank: #15141 (+67)
24M → 40K
7:03 | 8:15/mi
25.2M
3:22:35
25.20 mi
Rank: #15105 (+36)
40K → 25.2M
3:03 | 8:51/mi
FINISH
3:30:26
26.22 mi
Rank: #15036 (+69)
25.2M → FINISH
7:51 | 7:43/mi
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Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:43:16
Pace7:53 /mi
2nd Half
Distance13.11 mi
Time1:47:10
Pace8:11 /mi
📊Positive Split: 3.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:47:2924:217:5124:21
7:51
-
10K
6.21 mi12:11:4448:367:5024:15
7:49
-0:02
15K
9.32 mi12:36:141:13:067:5124:30
7:54
+0:05
20K
12.43 mi13:01:101:38:027:5424:56
8:02
+0:08
HALF
13.11 mi13:06:241:43:167:535:14
7:41
-0:21
25K
15.53 mi13:25:592:02:517:5519:35
8:05
+0:24
30K
18.64 mi13:51:202:28:127:5825:21
8:10
+0:05
20M
20.00 mi14:02:312:39:237:5911:11
8:14
+0:04
21M
21.00 mi14:11:022:47:548:008:31
8:31
+0:17
35K
21.75 mi14:17:022:53:548:006:00
8:02
-0:29
23M
23.00 mi14:27:353:04:278:0210:33
8:26
+0:24
24M
24.00 mi14:35:373:12:298:028:02
8:02
-0:24
40K
24.85 mi14:42:403:19:328:027:03
8:15
+0:13
25.2M
25.20 mi14:45:433:22:358:033:03
8:51
+0:36
FINISH
26.22 mi14:53:343:30:268:027:51
7:43
-1:08

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

7:41 /mi

Average Pace

8:02 /mi

Slowest Pace

8:51 /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

3:18:52

95% of race

Time at Steady Pace

11:34

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:02 /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 mi11:47:2924:217:5124:21
7:51
#15716
10K
6.21 mi12:11:4448:367:5024:15
7:49
#15681
15K
9.32 mi12:36:141:13:067:5124:30
7:54
#15784
20K
12.43 mi13:01:101:38:027:5424:56
8:02
#15908
HALF
13.11 mi13:06:241:43:167:535:14
7:41
#15829
25K
15.53 mi13:25:592:02:517:5519:35
8:05
#15841
30K
18.64 mi13:51:202:28:127:5825:21
8:10
#15597
20M
20.00 mi14:02:312:39:237:5911:11
8:14
#15505
21M
21.00 mi14:11:022:47:548:008:31
8:31
#15326
35K
21.75 mi14:17:022:53:548:006:00
8:02
#15279
23M
23.00 mi14:27:353:04:278:0210:33
8:26
#15280
24M
24.00 mi14:35:373:12:298:028:02
8:02
#15208
40K
24.85 mi14:42:403:19:328:027:03
8:15
#15141
25.2M
25.20 mi14:45:433:22:358:033:03
8:51
#15105
FINISH
26.22 mi14:53:343:30:268:027:51
7:43
#15036
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 mi15716105201052016050(Top 55%)10610(Top 65%)10610(Top 185%)
10K6.21 mi3.10 mi15681+3510485+3510485+3515676(Top 54%)10483(Top 64%)10483(Top 183%)
15K9.32 mi3.11 mi15784-10310517-3210517-3216050(Top 55%)10610(Top 65%)10610(Top 185%)
20K12.43 mi3.11 mi15908-12410546-2910546-2916277(Top 56%)10665(Top 65%)10665(Top 186%)
HALF13.11 mi0.68 mi15829+7910510+3610510+3614506(Top 50%)10015(Top 61%)10015(Top 175%)
25K15.53 mi2.42 mi15841-1210503+710503+715940(Top 55%)10481(Top 64%)10481(Top 183%)
30K18.64 mi3.11 mi15597+24410376+12710376+12714648(Top 50%)9827(Top 60%)9827(Top 172%)
20M20.00 mi1.36 mi15505+9210314+6210314+6214457(Top 50%)9669(Top 59%)9669(Top 169%)
21M21.00 mi1.00 mi15326+17910212+10210212+10213206(Top 46%)9004(Top 55%)9004(Top 157%)
35K21.75 mi0.75 mi15279+4710183+2910183+2914594(Top 50%)9585(Top 59%)9585(Top 167%)
23M23.00 mi1.25 mi15280-110166+1710166+1715249(Top 53%)9797(Top 60%)9797(Top 171%)
24M24.00 mi1.00 mi15208+7210109+5710109+5713988(Top 48%)9154(Top 56%)9154(Top 160%)
40K24.85 mi0.85 mi15141+6710071+3810071+3814056(Top 48%)9101(Top 56%)9101(Top 159%)
25.2M25.20 mi0.35 mi15105+3610047+2410047+2413726(Top 47%)8938(Top 55%)8938(Top 156%)
FINISH26.22 mi1.02 mi15036+6910008+3910008+3912990(Top 45%)8577(Top 52%)8577(Top 150%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 55%
×21
+97ft-345ft

Overall

16050

Males

10610

M18-39

10610

5K→10K

3.1 - 6.2 mi

Top 54%
×5
+79ft-138ft

Overall

15676

Males

10483

M18-39

10483

10K→15K

6.2 - 9.3 mi

Top 55%
×3
+67ft-78ft

Overall

16050

Males

10610

M18-39

10610

15K→20K

9.3 - 12.4 mi

Top 56%
×5
+106ft-86ft

Overall

16277

Males

10665

M18-39

10665

20K→HALF

12.4 - 13.1 mi

Top 50%
×2
+19ft-37ft

Overall

14506

Males

10015

M18-39

10015

HALF→25K

13.1 - 15.5 mi

Top 55%
×4
+66ft-88ft

Overall

15940

Males

10481

M18-39

10481

25K→30K

15.5 - 18.6 mi

Top 50%
×9
+181ft-148ft

Overall

14648

Males

9827

M18-39

9827

30K→20M

18.6 - 20.0 mi

Top 50%
×5
+64ft-50ft

Overall

14457

Males

9669

M18-39

9669

20M→21M

20.0 - 21.0 mi

Top 46%
×8
+106ft-24ft

Overall

13206

Males

9004

M18-39

9004

21M→35K

21.0 - 21.8 mi

Top 50%
×7
+17ft-86ft

Overall

14594

Males

9585

M18-39

9585

35K→23M

21.8 - 23.0 mi

Top 53%
×5
+23ft-63ft

Overall

15249

Males

9797

M18-39

9797

23M→24M

23.0 - 24.0 mi

Top 48%
×6
+12ft-82ft

Overall

13988

Males

9154

M18-39

9154

24M→40K

24.0 - 24.9 mi

Top 48%
×1
+6ft-20ft

Overall

14056

Males

9101

M18-39

9101

40K→25.2M

24.9 - 25.2 mi

Top 47%
×1
+13ft-16ft

Overall

13726

Males

8938

M18-39

8938

25.2M→FINISH

25.2 - 26.2 mi

Top 45%
×2
+22ft-21ft

Overall

12990

Males

8577

M18-39

8577

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1965*
Passed By
1150
Net Change
+680
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15716
5K → 10K235*200+35#15716#15681
10K → 15K163200-103#15681#15784
15K → 20K145200-124#15784#15908
20K → HALF889+79#15908#15829
HALF → 25K131143-12#15829#15841
25K → 30K326*82+244#15841#15597
30K → 20M14149+92#15597#15505
20M → 21M201*22+179#15505#15326
21M → 35K8235+47#15326#15279
35K → 23M8283-1#15279#15280
23M → 24M11442+72#15280#15208
24M → 40K11043+67#15208#15141
40K → 25.2M4711+36#15141#15105
25.2M → FINISH10031+69#15105#15036
TOTALS1965*1150+680

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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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