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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing
BOSTON MARATHON 2026

Leon Shelley

Bib: 28375 •M •Age: N/A

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
28:20
3.11 mi
Rank: #23150
Start → 5K
28:20 | 9:08/mi
10K
56:18
6.21 mi
Rank: #22993 (+157)
5K → 10K
27:58 | 9:01/mi
15K
1:23:27
9.32 mi
Rank: #22528 (+465)
10K → 15K
27:09 | 8:45/mi
20K
1:51:19
12.43 mi
Rank: #22286 (+242)
15K → 20K
27:52 | 8:59/mi
HALF
1:57:11
13.11 mi
Rank: #22206 (+80)
20K → HALF
5:52 | 8:37/mi
25K
2:18:38
15.53 mi
Rank: #21910 (+296)
HALF → 25K
21:27 | 8:51/mi
30K
2:48:02
18.64 mi
Rank: #21830 (+80)
25K → 30K
29:24 | 9:28/mi
20M
3:01:34
20.00 mi
Rank: #21886 (-56)
30K → 20M
13:32 | 9:58/mi
21M
3:12:47
21.00 mi
Rank: #22032 (-146)
20M → 21M
11:13 | 11:13/mi
35K
3:19:48
21.75 mi
Rank: #22003 (+29)
21M → 35K
7:01 | 9:23/mi
23M
3:32:07
23.00 mi
Rank: #22016 (-13)
35K → 23M
12:19 | 9:51/mi
24M
3:41:29
24.00 mi
Rank: #21972 (+44)
23M → 24M
9:22 | 9:22/mi
40K
3:51:47
24.85 mi
Rank: #22217 (-245)
24M → 40K
10:18 | 12:03/mi
25.2M
3:56:02
25.20 mi
Rank: #22288 (-71)
40K → 25.2M
4:15 | 12:20/mi
FINISH
4:07:13
26.22 mi
Rank: #22472 (-184)
25.2M → FINISH
11:11 | 10:59/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:57:11
Pace8:57 /mi
2nd Half
Distance13.11 mi
Time2:10:02
Pace9:56 /mi
📊Positive Split: 11.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:51:5728:209:0828:20
9:08
-
10K
6.21 mi12:19:5556:189:0427:58
9:01
-0:07
15K
9.32 mi12:47:041:23:278:5827:09
8:45
-0:16
20K
12.43 mi13:14:561:51:198:5827:52
8:59
+0:14
HALF
13.11 mi13:20:481:57:118:575:52
8:37
-0:22
25K
15.53 mi13:42:152:18:388:5621:27
8:51
+0:14
30K
18.64 mi14:11:392:48:029:0129:24
9:28
+0:37
20M
20.00 mi14:25:113:01:349:0513:32
9:58
+0:30
21M
21.00 mi14:36:243:12:479:1111:13
11:13
+1:15
35K
21.75 mi14:43:253:19:489:127:01
9:23
-1:50
23M
23.00 mi14:55:443:32:079:1412:19
9:51
+0:28
24M
24.00 mi15:05:063:41:299:149:22
9:22
-0:29
40K
24.85 mi15:15:243:51:479:2010:18
12:03
+2:41
25.2M
25.20 mi15:19:393:56:029:224:15
12:20
+0:17
FINISH
26.22 mi15:30:504:07:139:2711:11
10:59
-1:21

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

8:37 /mi

Average Pace

9:26 /mi

Slowest Pace

12:20 /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

33:01

13% of race

Time at Steady Pace

2:57:15

72% of race

Time at Slower Pace

36:57

15% of race

Average Pace: 9:26 /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 mi11:51:5728:209:0828:20
9:08
#23150
10K
6.21 mi12:19:5556:189:0427:58
9:01
#22993
15K
9.32 mi12:47:041:23:278:5827:09
8:45
#22528
20K
12.43 mi13:14:561:51:198:5827:52
8:59
#22286
HALF
13.11 mi13:20:481:57:118:575:52
8:37
#22206
25K
15.53 mi13:42:152:18:388:5621:27
8:51
#21910
30K
18.64 mi14:11:392:48:029:0129:24
9:28
#21830
20M
20.00 mi14:25:113:01:349:0513:32
9:58
#21886
21M
21.00 mi14:36:243:12:479:1111:13
11:13
#22032
35K
21.75 mi14:43:253:19:489:127:01
9:23
#22003
23M
23.00 mi14:55:443:32:079:1412:19
9:51
#22016
24M
24.00 mi15:05:063:41:299:149:22
9:22
#21972
40K
24.85 mi15:15:243:51:479:2010:18
12:03
#22217
25.2M
25.20 mi15:19:393:56:029:224:15
12:20
#22288
FINISH
26.22 mi15:30:504:07:139:2711:11
10:59
#22472
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 mi23150138061380621410(Top 74%)12982(Top 79%)12982(Top 695%)
10K6.21 mi3.10 mi22993+15713734+7213734+7222836(Top 79%)13675(Top 84%)13675(Top 732%)
15K9.32 mi3.11 mi22528+46513513+22113513+22121410(Top 74%)12982(Top 79%)12982(Top 695%)
20K12.43 mi3.11 mi22286+24213397+11613397+11621796(Top 75%)13149(Top 80%)13149(Top 704%)
HALF13.11 mi0.68 mi22206+8013353+4413353+4420855(Top 72%)12738(Top 78%)12738(Top 682%)
25K15.53 mi2.42 mi21910+29613204+14913204+14920442(Top 70%)12474(Top 76%)12474(Top 668%)
30K18.64 mi3.11 mi21830+8013147+5713147+5721501(Top 74%)12896(Top 79%)12896(Top 690%)
20M20.00 mi1.36 mi21886-5613159-1213159-1222467(Top 77%)13290(Top 81%)13290(Top 711%)
21M21.00 mi1.00 mi22032-14613208-4913208-4923577(Top 81%)13752(Top 84%)13752(Top 736%)
35K21.75 mi0.75 mi22003+2913185+2313185+2321411(Top 74%)12687(Top 78%)12687(Top 679%)
23M23.00 mi1.25 mi22016-1313167+1813167+1821678(Top 75%)12765(Top 78%)12765(Top 683%)
24M24.00 mi1.00 mi21972+4413144+2313144+2320860(Top 72%)12317(Top 75%)12317(Top 659%)
40K24.85 mi0.85 mi22217-24513248-10413248-10425949(Top 89%)14731(Top 90%)14731(Top 789%)
25.2M25.20 mi0.35 mi22288-7113277-2913277-2925003(Top 86%)14278(Top 87%)14278(Top 764%)
FINISH26.22 mi1.02 mi22472-18413347-7013347-7026061(Top 90%)14789(Top 91%)14789(Top 792%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 74%
×21
+97ft-345ft

Overall

21410

Males

12982

M50-54

12982

5K→10K

3.1 - 6.2 mi

Top 79%
×5
+79ft-138ft

Overall

22836

Males

13675

M50-54

13675

10K→15K

6.2 - 9.3 mi

Top 74%
×3
+67ft-78ft

Overall

21410

Males

12982

M50-54

12982

15K→20K

9.3 - 12.4 mi

Top 75%
×5
+106ft-86ft

Overall

21796

Males

13149

M50-54

13149

20K→HALF

12.4 - 13.1 mi

Top 72%
×2
+19ft-37ft

Overall

20855

Males

12738

M50-54

12738

HALF→25K

13.1 - 15.5 mi

Top 70%
×4
+66ft-88ft

Overall

20442

Males

12474

M50-54

12474

25K→30K

15.5 - 18.6 mi

Top 74%
×9
+181ft-148ft

Overall

21501

Males

12896

M50-54

12896

30K→20M

18.6 - 20.0 mi

Top 77%
×5
+64ft-50ft

Overall

22467

Males

13290

M50-54

13290

20M→21M

20.0 - 21.0 mi

Top 81%
×8
+106ft-24ft

Overall

23577

Males

13752

M50-54

13752

21M→35K

21.0 - 21.8 mi

Top 74%
×7
+17ft-86ft

Overall

21411

Males

12687

M50-54

12687

35K→23M

21.8 - 23.0 mi

Top 75%
×5
+23ft-63ft

Overall

21678

Males

12765

M50-54

12765

23M→24M

23.0 - 24.0 mi

Top 72%
×6
+12ft-82ft

Overall

20860

Males

12317

M50-54

12317

24M→40K

24.0 - 24.9 mi

Top 89%
×1
+6ft-20ft

Overall

25949

Males

14731

M50-54

14731

40K→25.2M

24.9 - 25.2 mi

Top 86%
×1
+13ft-16ft

Overall

25003

Males

14278

M50-54

14278

25.2M→FINISH

25.2 - 26.2 mi

Top 90%
×2
+22ft-21ft

Overall

26061

Males

14789

M50-54

14789

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
2038*
Passed By
1311
Net Change
+678
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23150
5K → 10K342*185+157#23150#22993
10K → 15K495*30+465#22993#22528
15K → 20K291*49+242#22528#22286
20K → HALF833+80#22286#22206
HALF → 25K311*15+296#22206#21910
25K → 30K193113+80#21910#21830
30K → 20M64120-56#21830#21886
20M → 21M45191-146#21886#22032
21M → 35K5728+29#22032#22003
35K → 23M7790-13#22003#22016
23M → 24M6622+44#22016#21972
24M → 40K4200-245#21972#22217
40K → 25.2M778-71#22217#22288
25.2M → FINISH3187-184#22288#22472
TOTALS2038*1311+678

* 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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