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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing
BOSTON MARATHON 2026

John Szilezy

Bib: 33450 •M •Age: N/A

NJ

Boston Marathon logo
0:00
0:00
/ mi
Masters
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Overall
#0 / 29021
Gender (Male)
#0 / 16340
Masters (Masters Men)
#0 / 10617
Age Group (M50-54)
#0 / 1868
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
31:41
3.11 mi
Rank: #26481
Start → 5K
31:41 | 10:12/mi
10K
1:03:04
6.21 mi
Rank: #26276 (+205)
5K → 10K
31:23 | 10:07/mi
15K
1:35:12
9.32 mi
Rank: #26327 (-51)
10K → 15K
32:08 | 10:21/mi
20K
2:08:38
12.43 mi
Rank: #26411 (-84)
15K → 20K
33:26 | 10:46/mi
HALF
2:15:50
13.11 mi
Rank: #26429 (-18)
20K → HALF
7:12 | 10:34/mi
25K
2:44:05
15.53 mi
Rank: #26587 (-158)
HALF → 25K
28:15 | 11:39/mi
30K
3:19:26
18.64 mi
Rank: #26490 (+97)
25K → 30K
35:21 | 11:23/mi
20M
3:35:25
20.00 mi
Rank: #26462 (+28)
30K → 20M
15:59 | 11:47/mi
21M
3:48:22
21.00 mi
Rank: #26473 (-11)
20M → 21M
12:57 | 12:57/mi
35K
3:56:32
21.75 mi
Rank: #26437 (+36)
21M → 35K
8:10 | 10:55/mi
23M
4:10:35
23.00 mi
Rank: #26365 (+72)
35K → 23M
14:03 | 11:14/mi
24M
4:21:49
24.00 mi
Rank: #26336 (+29)
23M → 24M
11:14 | 11:14/mi
40K
4:31:38
24.85 mi
Rank: #26285 (+51)
24M → 40K
9:49 | 11:29/mi
25.2M
4:36:44
25.20 mi
Rank: #26335 (-50)
40K → 25.2M
5:06 | 14:48/mi
FINISH
4:47:21
26.22 mi
Rank: #26294 (+41)
25.2M → FINISH
10:37 | 10:26/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
Time2:15:50
Pace10:22 /mi
2nd Half
Distance13.11 mi
Time2:31:31
Pace11:34 /mi
📊Positive Split: 11.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi12:02:4731:4110:1231:41
10:12
-
10K
6.21 mi12:34:101:03:0410:0931:23
10:07
-0:05
15K
9.32 mi13:06:181:35:1210:1332:08
10:21
+0:14
20K
12.43 mi13:39:442:08:3810:2233:26
10:46
+0:25
HALF
13.11 mi13:46:562:15:5010:227:12
10:34
-0:12
25K
15.53 mi14:15:112:44:0510:3428:15
11:39
+1:05
30K
18.64 mi14:50:323:19:2610:4235:21
11:23
-0:16
20M
20.00 mi15:06:313:35:2510:4715:59
11:47
+0:24
21M
21.00 mi15:19:283:48:2210:5312:57
12:57
+1:10
35K
21.75 mi15:27:383:56:3210:538:10
10:55
-2:02
23M
23.00 mi15:41:414:10:3510:5414:03
11:14
+0:19
24M
24.00 mi15:52:554:21:4910:5511:14
11:14
0:00
40K
24.85 mi16:02:444:31:3810:569:49
11:29
+0:15
25.2M
25.20 mi16:07:504:36:4410:595:06
14:48
+3:19
FINISH
26.22 mi16:18:274:47:2110:5910:37
10:26
-4:22

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

10:07 /mi

Average Pace

10:58 /mi

Slowest Pace

14:48 /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

1:53:01

39% of race

Time at Steady Pace

2:36:17

54% of race

Time at Slower Pace

18:03

6% of race

Average Pace: 10:58 /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 mi12:02:4731:4110:1231:41
10:12
#26481
10K
6.21 mi12:34:101:03:0410:0931:23
10:07
#26276
15K
9.32 mi13:06:181:35:1210:1332:08
10:21
#26327
20K
12.43 mi13:39:442:08:3810:2233:26
10:46
#26411
HALF
13.11 mi13:46:562:15:5010:227:12
10:34
#26429
25K
15.53 mi14:15:112:44:0510:3428:15
11:39
#26587
30K
18.64 mi14:50:323:19:2610:4235:21
11:23
#26490
20M
20.00 mi15:06:313:35:2510:4715:59
11:47
#26462
21M
21.00 mi15:19:283:48:2210:5312:57
12:57
#26473
35K
21.75 mi15:27:383:56:3210:538:10
10:55
#26437
23M
23.00 mi15:41:414:10:3510:5414:03
11:14
#26365
24M
24.00 mi15:52:554:21:4910:5511:14
11:14
#26336
40K
24.85 mi16:02:444:31:3810:569:49
11:29
#26285
25.2M
25.20 mi16:07:504:36:4410:595:06
14:48
#26335
FINISH
26.22 mi16:18:274:47:2110:5910:37
10:26
#26294
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi26481154081540826398(Top 91%)15340(Top 94%)15340(Top 821%)
10K6.21 mi3.10 mi26276+20515318+9015318+9026088(Top 90%)15219(Top 93%)15219(Top 815%)
15K9.32 mi3.11 mi26327-5115325-715325-726398(Top 91%)15340(Top 94%)15340(Top 821%)
20K12.43 mi3.11 mi26411-8415348-2315348-2326635(Top 92%)15417(Top 94%)15417(Top 825%)
HALF13.11 mi0.68 mi26429-1815356-815356-826755(Top 92%)15440(Top 94%)15440(Top 827%)
25K15.53 mi2.42 mi26587-15815412-5615412-5627181(Top 94%)15612(Top 96%)15612(Top 836%)
30K18.64 mi3.11 mi26490+9715343+6915343+6925975(Top 90%)14998(Top 92%)14998(Top 803%)
20M20.00 mi1.36 mi26462+2815317+2615317+2626089(Top 90%)14967(Top 92%)14967(Top 801%)
21M21.00 mi1.00 mi26473-1115313+415313+426303(Top 91%)15033(Top 92%)15033(Top 805%)
35K21.75 mi0.75 mi26437+3615289+2415289+2425127(Top 87%)14451(Top 88%)14451(Top 774%)
23M23.00 mi1.25 mi26365+7215246+4315246+4324960(Top 86%)14320(Top 88%)14320(Top 767%)
24M24.00 mi1.00 mi26336+2915222+2415222+2425504(Top 88%)14556(Top 89%)14556(Top 779%)
40K24.85 mi0.85 mi26285+5115190+3215190+3225075(Top 86%)14318(Top 88%)14318(Top 766%)
25.2M25.20 mi0.35 mi26335-5015210-2015210-2027804(Top 96%)15670(Top 96%)15670(Top 839%)
FINISH26.22 mi1.02 mi26294+4115176+3415176+3424894(Top 86%)14218(Top 87%)14218(Top 761%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 91%
×21
+97ft-345ft

Overall

26398

Males

15340

M50-54

15340

5K→10K

3.1 - 6.2 mi

Top 90%
×5
+79ft-138ft

Overall

26088

Males

15219

M50-54

15219

10K→15K

6.2 - 9.3 mi

Top 91%
×3
+67ft-78ft

Overall

26398

Males

15340

M50-54

15340

15K→20K

9.3 - 12.4 mi

Top 92%
×5
+106ft-86ft

Overall

26635

Males

15417

M50-54

15417

20K→HALF

12.4 - 13.1 mi

Top 92%
×2
+19ft-37ft

Overall

26755

Males

15440

M50-54

15440

HALF→25K

13.1 - 15.5 mi

Top 94%
×4
+66ft-88ft

Overall

27181

Males

15612

M50-54

15612

25K→30K

15.5 - 18.6 mi

Top 90%
×9
+181ft-148ft

Overall

25975

Males

14998

M50-54

14998

30K→20M

18.6 - 20.0 mi

Top 90%
×5
+64ft-50ft

Overall

26089

Males

14967

M50-54

14967

20M→21M

20.0 - 21.0 mi

Top 91%
×8
+106ft-24ft

Overall

26303

Males

15033

M50-54

15033

21M→35K

21.0 - 21.8 mi

Top 87%
×7
+17ft-86ft

Overall

25127

Males

14451

M50-54

14451

35K→23M

21.8 - 23.0 mi

Top 86%
×5
+23ft-63ft

Overall

24960

Males

14320

M50-54

14320

23M→24M

23.0 - 24.0 mi

Top 88%
×6
+12ft-82ft

Overall

25504

Males

14556

M50-54

14556

24M→40K

24.0 - 24.9 mi

Top 86%
×1
+6ft-20ft

Overall

25075

Males

14318

M50-54

14318

40K→25.2M

24.9 - 25.2 mi

Top 96%
×1
+13ft-16ft

Overall

27804

Males

15670

M50-54

15670

25.2M→FINISH

25.2 - 26.2 mi

Top 86%
×2
+22ft-21ft

Overall

24894

Males

14218

M50-54

14218

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1108*
Passed By
915
Net Change
+187
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#26481
5K → 10K304*99+205#26481#26276
10K → 15K115166-51#26276#26327
15K → 20K82166-84#26327#26411
20K → HALF1129-18#26411#26429
HALF → 25K48200-158#26429#26587
25K → 30K14952+97#26587#26490
30K → 20M6739+28#26490#26462
20M → 21M4051-11#26462#26473
21M → 35K426+36#26473#26437
35K → 23M8816+72#26437#26365
23M → 24M4718+29#26365#26336
24M → 40K598+51#26336#26285
40K → 25.2M353-50#26285#26335
25.2M → FINISH5312+41#26335#26294
TOTALS1108*915+187

* 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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