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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing
BOSTON MARATHON 2026

Seth Jefferson

Bib: 27823 β€’M β€’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
51Β°/41Β°F
overcast clouds
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  • Finish time optimization
  • Qualification readiness
  • Segment-by-segment breakdown
  • Personalized race insights
  • Downloadable athlete report
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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
27:32
3.11 mi
Rank: #21999
Start β†’ 5K
27:32 | 8:52/mi
10K
54:26
6.21 mi
Rank: #21631 (+368)
5K β†’ 10K
26:54 | 8:40/mi
15K
1:22:23
9.32 mi
Rank: #21961 (-330)
10K β†’ 15K
27:57 | 9:00/mi
20K
1:49:38
12.43 mi
Rank: #21647 (+314)
15K β†’ 20K
27:15 | 8:47/mi
HALF
1:55:23
13.11 mi
Rank: #21566 (+81)
20K β†’ HALF
5:45 | 8:27/mi
25K
2:17:53
15.53 mi
Rank: #21679 (-113)
HALF β†’ 25K
22:30 | 9:17/mi
30K
2:52:12
18.64 mi
Rank: #22779 (-1100)
25K β†’ 30K
34:19 | 11:03/mi
20M
3:09:34
20.00 mi
Rank: #23357 (-578)
30K β†’ 20M
17:22 | 12:48/mi
21M
3:23:49
21.00 mi
Rank: #23773 (-416)
20M β†’ 21M
14:15 | 14:15/mi
35K
3:33:01
21.75 mi
Rank: #23982 (-209)
21M β†’ 35K
9:12 | 12:18/mi
23M
3:49:32
23.00 mi
Rank: #24360 (-378)
35K β†’ 23M
16:31 | 13:12/mi
24M
4:03:24
24.00 mi
Rank: #24687 (-327)
23M β†’ 24M
13:52 | 13:52/mi
40K
4:14:52
24.85 mi
Rank: #24863 (-176)
24M β†’ 40K
11:28 | 13:25/mi
25.2M
4:20:01
25.20 mi
Rank: #24937 (-74)
40K β†’ 25.2M
5:09 | 14:57/mi
FINISH
4:31:48
26.22 mi
Rank: #25052 (-115)
25.2M β†’ FINISH
11:47 | 11:34/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:55:23
Pace8:49 /mi
2nd Half
Distance13.11 mi
Time2:36:25
Pace11:56 /mi
πŸ“ŠPositive Split: 35.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:49:1827:328:5227:32
8:52
-
10K
6.21 mi12:16:1254:268:4626:54
8:40
-0:12
15K
9.32 mi12:44:091:22:238:5127:57
9:00
+0:20
20K
12.43 mi13:11:241:49:388:5027:15
8:47
-0:13
HALF
13.11 mi13:17:091:55:238:495:45
8:27
-0:20
25K
15.53 mi13:39:392:17:538:5322:30
9:17
+0:50
30K
18.64 mi14:13:582:52:129:1534:19
11:03
+1:46
20M
20.00 mi14:31:203:09:349:2917:22
12:48
+1:45
21M
21.00 mi14:45:353:23:499:4314:15
14:15
+1:27
35K
21.75 mi14:54:473:33:019:489:12
12:18
-1:57
23M
23.00 mi15:11:183:49:329:5916:31
13:12
+0:54
24M
24.00 mi15:25:104:03:2410:0913:52
13:52
+0:40
40K
24.85 mi15:36:384:14:5210:1611:28
13:25
-0:27
25.2M
25.20 mi15:41:474:20:0110:205:09
14:57
+1:32
FINISH
26.22 mi15:53:344:31:4810:2311:47
11:34
-3:23

Checkpoint Splits Visualizations

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

πŸ“ˆPace 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

8:27 /mi

Average Pace

10:22 /mi

Slowest Pace

14:57 /mi

Loading chart...
Fastest
Middle
Slowest
Average

πŸ“ŠSegments

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

2:17:53

51% of race

Time at Steady Pace

55:18

20% of race

Time at Slower Pace

1:18:37

29% of race

Average Pace: 10:22 /mi

Loading chart...
Faster pace (< avg)
Steady pace (β‰ˆ 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 mi11:49:1827:328:5227:32
8:52
#21999
10K
6.21 mi12:16:1254:268:4626:54
8:40
#21631
15K
9.32 mi12:44:091:22:238:5127:57
9:00
#21961
20K
12.43 mi13:11:241:49:388:5027:15
8:47
#21647
HALF
13.11 mi13:17:091:55:238:495:45
8:27
#21566
25K
15.53 mi13:39:392:17:538:5322:30
9:17
#21679
30K
18.64 mi14:13:582:52:129:1534:19
11:03
#22779
20M
20.00 mi14:31:203:09:349:2917:22
12:48
#23357
21M
21.00 mi14:45:353:23:499:4314:15
14:15
#23773
35K
21.75 mi14:54:473:33:019:489:12
12:18
#23982
23M
23.00 mi15:11:183:49:329:5916:31
13:12
#24360
24M
24.00 mi15:25:104:03:2410:0913:52
13:52
#24687
40K
24.85 mi15:36:384:14:5210:1611:28
13:25
#24863
25.2M
25.20 mi15:41:474:20:0110:205:09
14:57
#24937
FINISH
26.22 mi15:53:344:31:4810:2311:47
11:34
#25052
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 mi21999132231322322678(Top 78%)13626(Top 83%)13626(Top 238%)
10K6.21 mi3.10 mi21631+36813053+17013053+17021213(Top 73%)12884(Top 79%)12884(Top 225%)
15K9.32 mi3.11 mi21961-33013227-17413227-17422678(Top 78%)13626(Top 83%)13626(Top 238%)
20K12.43 mi3.11 mi21647+31413066+16113066+16120817(Top 72%)12684(Top 78%)12684(Top 222%)
HALF13.11 mi0.68 mi21566+8113028+3813028+3819872(Top 68%)12290(Top 75%)12290(Top 215%)
25K15.53 mi2.42 mi21679-11313087-5913087-5922325(Top 77%)13394(Top 82%)13394(Top 234%)
30K18.64 mi3.11 mi22779-110013598-51113598-51125417(Top 88%)14736(Top 90%)14736(Top 257%)
20M20.00 mi1.36 mi23357-57813852-25413852-25427233(Top 94%)15518(Top 95%)15518(Top 271%)
21M21.00 mi1.00 mi23773-41614075-22314075-22327521(Top 95%)15606(Top 96%)15606(Top 273%)
35K21.75 mi0.75 mi23982-20914157-8214157-8227053(Top 93%)15363(Top 94%)15363(Top 268%)
23M23.00 mi1.25 mi24360-37814323-16614323-16627545(Top 95%)15612(Top 96%)15612(Top 273%)
24M24.00 mi1.00 mi24687-32714467-14414467-14428263(Top 97%)15914(Top 97%)15914(Top 278%)
40K24.85 mi0.85 mi24863-17614533-6614533-6627421(Top 94%)15494(Top 95%)15494(Top 271%)
25.2M25.20 mi0.35 mi24937-7414556-2314556-2327895(Top 96%)15714(Top 96%)15714(Top 275%)
FINISH26.22 mi1.02 mi25052-11514599-4314599-4326947(Top 93%)15236(Top 93%)15236(Top 266%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 78%
Γ—21
+97ft-345ft

Overall

22678

Males

13626

M18-39

13626

5K→10K

3.1 - 6.2 mi

Top 73%
Γ—5
+79ft-138ft

Overall

21213

Males

12884

M18-39

12884

10K→15K

6.2 - 9.3 mi

Top 78%
Γ—3
+67ft-78ft

Overall

22678

Males

13626

M18-39

13626

15K→20K

9.3 - 12.4 mi

Top 72%
Γ—5
+106ft-86ft

Overall

20817

Males

12684

M18-39

12684

20K→HALF

12.4 - 13.1 mi

Top 68%
Γ—2
+19ft-37ft

Overall

19872

Males

12290

M18-39

12290

HALF→25K

13.1 - 15.5 mi

Top 77%
Γ—4
+66ft-88ft

Overall

22325

Males

13394

M18-39

13394

25K→30K

15.5 - 18.6 mi

Top 88%
Γ—9
+181ft-148ft

Overall

25417

Males

14736

M18-39

14736

30K→20M

18.6 - 20.0 mi

Top 94%
Γ—5
+64ft-50ft

Overall

27233

Males

15518

M18-39

15518

20M→21M

20.0 - 21.0 mi

Top 95%
Γ—8
+106ft-24ft

Overall

27521

Males

15606

M18-39

15606

21M→35K

21.0 - 21.8 mi

Top 93%
Γ—7
+17ft-86ft

Overall

27053

Males

15363

M18-39

15363

35K→23M

21.8 - 23.0 mi

Top 95%
Γ—5
+23ft-63ft

Overall

27545

Males

15612

M18-39

15612

23M→24M

23.0 - 24.0 mi

Top 97%
Γ—6
+12ft-82ft

Overall

28263

Males

15914

M18-39

15914

24M→40K

24.0 - 24.9 mi

Top 94%
Γ—1
+6ft-20ft

Overall

27421

Males

15494

M18-39

15494

40K→25.2M

24.9 - 25.2 mi

Top 96%
Γ—1
+13ft-16ft

Overall

27895

Males

15714

M18-39

15714

25.2M→FINISH

25.2 - 26.2 mi

Top 93%
Γ—2
+22ft-21ft

Overall

26947

Males

15236

M18-39

15236

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1198*
Passed By
2186
Net Change
-3053
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start β†’ 5K----#21999
5K β†’ 10K521*153+368#21999#21631
10K β†’ 15K69200-330#21631#21961
15K β†’ 20K351*37+314#21961#21647
20K β†’ HALF832+81#21647#21566
HALF β†’ 25K92200-113#21566#21679
25K β†’ 30K23200-1100#21679#22779
30K β†’ 20M8200-578#22779#23357
20M β†’ 21M3200-416#23357#23773
21M β†’ 35K8200-209#23773#23982
35K β†’ 23M9200-378#23982#24360
23M β†’ 24M2200-327#24360#24687
24M β†’ 40K13189-176#24687#24863
40K β†’ 25.2M478-74#24863#24937
25.2M β†’ FINISH12127-115#24937#25052
TOTALS1198*2186-3053

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

πŸ“Š

Passing Analysis Visualizations

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

Time:
Category:

πŸ“ˆPosition Graph

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🎨Heatmap Timeline

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πŸ”„Passing Circle

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🌊Position Flow

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πŸƒRace 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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