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BOSTON MARATHON 2026

Zachary Henderson

Bib: 31421•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
29:18
3.11 mi
Rank: #24243
Start → 5K
29:18 | 9:26/mi
10K
59:41
6.21 mi
Rank: #24827 (-584)
5K → 10K
30:23 | 9:47/mi
15K
1:31:26
9.32 mi
Rank: #25331 (-504)
10K → 15K
31:45 | 10:14/mi
20K
1:59:53
12.43 mi
Rank: #24712 (+619)
15K → 20K
28:27 | 9:10/mi
HALF
2:05:53
13.11 mi
Rank: #24610 (+102)
20K → HALF
6:00 | 8:49/mi
25K
2:27:57
15.53 mi
Rank: #24167 (+443)
HALF → 25K
22:04 | 9:06/mi
30K
2:57:16
18.64 mi
Rank: #23659 (+508)
25K → 30K
29:19 | 9:27/mi
20M
3:10:52
20.00 mi
Rank: #23559 (+100)
30K → 20M
13:36 | 10:01/mi
21M
3:20:36
21.00 mi
Rank: #23328 (+231)
20M → 21M
9:44 | 9:44/mi
35K
3:26:48
21.75 mi
Rank: #23134 (+194)
21M → 35K
6:12 | 8:18/mi
23M
3:37:50
23.00 mi
Rank: #22872 (+262)
35K → 23M
11:02 | 8:49/mi
24M
3:46:19
24.00 mi
Rank: #22670 (+202)
23M → 24M
8:29 | 8:29/mi
40K
3:54:00
24.85 mi
Rank: #22524 (+146)
24M → 40K
7:41 | 9:00/mi
25.2M
3:57:22
25.20 mi
Rank: #22451 (+73)
40K → 25.2M
3:22 | 9:46/mi
FINISH
4:05:25
26.22 mi
Rank: #22248 (+203)
25.2M → FINISH
8:03 | 7:54/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st Half
via HALF
Distance13.11 mi
Time2:05:53
Pace9:37 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:59:32
Pace9:08 /mi
📊Negative Split: 5.0% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:59:3129:189:2629:18
9:26
-
10K
6.21 mi12:29:5459:419:3730:23
9:47
+0:21
15K
9.32 mi13:01:391:31:269:4931:45
10:14
+0:27
20K
12.43 mi13:30:061:59:539:3928:27
9:10
-1:04
HALF
13.11 mi13:36:062:05:539:376:00
8:49
-0:21
25K
15.53 mi13:58:102:27:579:3222:04
9:06
+0:17
30K
18.64 mi14:27:292:57:169:3129:19
9:27
+0:21
20M
20.00 mi14:41:053:10:529:3313:36
10:01
+0:34
21M
21.00 mi14:50:493:20:369:349:44
9:44
-0:17
35K
21.75 mi14:57:013:26:489:316:12
8:18
-1:26
23M
23.00 mi15:08:033:37:509:2911:02
8:49
+0:31
24M
24.00 mi15:16:323:46:199:268:29
8:29
-0:20
40K
24.85 mi15:24:133:54:009:257:41
9:00
+0:31
25.2M
25.20 mi15:27:353:57:229:263:22
9:46
+0:46
FINISH
26.22 mi15:35:384:05:259:238:03
7:54
-1:52

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

7:54 /mi

Average Pace

9:22 /mi

Slowest Pace

10:14 /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

39:46

16% of race

Time at Steady Pace

1:56:49

48% of race

Time at Slower Pace

1:28:50

36% of race

Average Pace: 9:22 /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 mi11:59:3129:189:2629:18
9:26
#24243
10K
6.21 mi12:29:5459:419:3730:23
9:47
#24827
15K
9.32 mi13:01:391:31:269:4931:45
10:14
#25331
20K
12.43 mi13:30:061:59:539:3928:27
9:10
#24712
HALF
13.11 mi13:36:062:05:539:376:00
8:49
#24610
25K
15.53 mi13:58:102:27:579:3222:04
9:06
#24167
30K
18.64 mi14:27:292:57:169:3129:19
9:27
#23659
20M
20.00 mi14:41:053:10:529:3313:36
10:01
#23559
21M
21.00 mi14:50:493:20:369:349:44
9:44
#23328
35K
21.75 mi14:57:013:26:489:316:12
8:18
#23134
23M
23.00 mi15:08:033:37:509:2911:02
8:49
#22872
24M
24.00 mi15:16:323:46:199:268:29
8:29
#22670
40K
24.85 mi15:24:133:54:009:257:41
9:00
#22524
25.2M
25.20 mi15:27:353:57:229:263:22
9:46
#22451
FINISH
26.22 mi15:35:384:05:259:238:03
7:54
#22248
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 mi24243143561435626171(Top 90%)15244(Top 93%)15244(Top 266%)
10K6.21 mi3.10 mi24827-58414642-28614642-28625293(Top 87%)14871(Top 91%)14871(Top 260%)
15K9.32 mi3.11 mi25331-50414875-23314875-23326171(Top 90%)15244(Top 93%)15244(Top 266%)
20K12.43 mi3.11 mi24712+61914588+28714588+28722585(Top 78%)13544(Top 83%)13544(Top 237%)
HALF13.11 mi0.68 mi24610+10214540+4814540+4821812(Top 75%)13184(Top 81%)13184(Top 230%)
25K15.53 mi2.42 mi24167+44314311+22914311+22921615(Top 74%)13047(Top 80%)13047(Top 228%)
30K18.64 mi3.11 mi23659+50814028+28314028+28321412(Top 74%)12852(Top 79%)12852(Top 225%)
20M20.00 mi1.36 mi23559+10013962+6613962+6622597(Top 78%)13349(Top 82%)13349(Top 233%)
21M21.00 mi1.00 mi23328+23113824+13813824+13819501(Top 67%)11852(Top 73%)11852(Top 207%)
35K21.75 mi0.75 mi23134+19413718+10613718+10616351(Top 56%)10359(Top 63%)10359(Top 181%)
23M23.00 mi1.25 mi22872+26213579+13913579+13917522(Top 60%)10766(Top 66%)10766(Top 188%)
24M24.00 mi1.00 mi22670+20213466+11313466+11316799(Top 58%)10402(Top 64%)10402(Top 182%)
40K24.85 mi0.85 mi22524+14613378+8813378+8818336(Top 63%)11062(Top 68%)11062(Top 193%)
25.2M25.20 mi0.35 mi22451+7313340+3813340+3818466(Top 64%)11126(Top 68%)11126(Top 194%)
FINISH26.22 mi1.02 mi22248+20313244+9613244+9614493(Top 50%)9280(Top 57%)9280(Top 162%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 90%
×21
+97ft-345ft

Overall

26171

Males

15244

M18-39

15244

5K→10K

3.1 - 6.2 mi

Top 87%
×5
+79ft-138ft

Overall

25293

Males

14871

M18-39

14871

10K→15K

6.2 - 9.3 mi

Top 90%
×3
+67ft-78ft

Overall

26171

Males

15244

M18-39

15244

15K→20K

9.3 - 12.4 mi

Top 78%
×5
+106ft-86ft

Overall

22585

Males

13544

M18-39

13544

20K→HALF

12.4 - 13.1 mi

Top 75%
×2
+19ft-37ft

Overall

21812

Males

13184

M18-39

13184

HALF→25K

13.1 - 15.5 mi

Top 74%
×4
+66ft-88ft

Overall

21615

Males

13047

M18-39

13047

25K→30K

15.5 - 18.6 mi

Top 74%
×9
+181ft-148ft

Overall

21412

Males

12852

M18-39

12852

30K→20M

18.6 - 20.0 mi

Top 78%
×5
+64ft-50ft

Overall

22597

Males

13349

M18-39

13349

20M→21M

20.0 - 21.0 mi

Top 67%
×8
+106ft-24ft

Overall

19501

Males

11852

M18-39

11852

21M→35K

21.0 - 21.8 mi

Top 56%
×7
+17ft-86ft

Overall

16351

Males

10359

M18-39

10359

35K→23M

21.8 - 23.0 mi

Top 60%
×5
+23ft-63ft

Overall

17522

Males

10766

M18-39

10766

23M→24M

23.0 - 24.0 mi

Top 58%
×6
+12ft-82ft

Overall

16799

Males

10402

M18-39

10402

24M→40K

24.0 - 24.9 mi

Top 63%
×1
+6ft-20ft

Overall

18336

Males

11062

M18-39

11062

40K→25.2M

24.9 - 25.2 mi

Top 64%
×1
+13ft-16ft

Overall

18466

Males

11126

M18-39

11126

25.2M→FINISH

25.2 - 26.2 mi

Top 50%
×2
+22ft-21ft

Overall

14493

Males

9280

M18-39

9280

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Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
3204
Passed By
1209
Net Change
+1995
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24243
5K → 10K62646-584#24243#24827
10K → 15K28532-504#24827#25331
15K → 20K6201+619#25331#24712
20K → HALF1031+102#24712#24610
HALF → 25K4441+443#24610#24167
25K → 30K5102+508#24167#23659
30K → 20M12121+100#23659#23559
20M → 21M2332+231#23559#23328
21M → 35K1940+194#23328#23134
35K → 23M2620+262#23134#22872
23M → 24M2031+202#22872#22670
24M → 40K1471+146#22670#22524
40K → 25.2M730+73#22524#22451
25.2M → FINISH2041+203#22451#22248
TOTALS32041209+1995

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📊

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