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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing
BOSTON MARATHON 2026

Klark Larsen

Bib: 3428 •M •Age: N/A

UT

Boston Marathon logo
0:00
0:00
/ mi
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Overall
#0 / 29021
Top 32%
Gender (Male)
#0 / 16340
Top 45%
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
20:50
3.11 mi
Rank: #5958
Start → 5K
20:50 | 6:43/mi
10K
41:57
6.21 mi
Rank: #6420 (-462)
5K → 10K
21:07 | 6:48/mi
15K
1:03:14
9.32 mi
Rank: #6679 (-259)
10K → 15K
21:17 | 6:52/mi
20K
1:25:28
12.43 mi
Rank: #7389 (-710)
15K → 20K
22:14 | 7:10/mi
HALF
1:30:06
13.11 mi
Rank: #7357 (+32)
20K → HALF
4:38 | 6:48/mi
25K
1:46:58
15.53 mi
Rank: #7294 (+63)
HALF → 25K
16:52 | 6:58/mi
30K
2:09:54
18.64 mi
Rank: #7482 (-188)
25K → 30K
22:56 | 7:23/mi
20M
2:20:27
20.00 mi
Rank: #7672 (-190)
30K → 20M
10:33 | 7:47/mi
21M
2:28:38
21.00 mi
Rank: #7790 (-118)
20M → 21M
8:11 | 8:11/mi
35K
2:34:32
21.75 mi
Rank: #7973 (-183)
21M → 35K
5:54 | 7:54/mi
23M
2:44:58
23.00 mi
Rank: #8295 (-322)
35K → 23M
10:26 | 8:21/mi
24M
2:53:04
24.00 mi
Rank: #8531 (-236)
23M → 24M
8:06 | 8:06/mi
40K
3:00:39
24.85 mi
Rank: #8881 (-350)
24M → 40K
7:35 | 8:53/mi
25.2M
3:03:55
25.20 mi
Rank: #8999 (-118)
40K → 25.2M
3:16 | 9:29/mi
FINISH
3:11:50
26.22 mi
Rank: #9140 (-141)
25.2M → FINISH
7:55 | 7:47/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:30:06
Pace6:53 /mi
2nd Half
Distance13.11 mi
Time1:41:44
Pace7:46 /mi
📊Positive Split: 12.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:2320:506:4320:50
6:43
-
10K
6.21 mi10:43:3041:576:4621:07
6:48
+0:05
15K
9.32 mi11:04:471:03:146:4821:17
6:52
+0:04
20K
12.43 mi11:27:011:25:286:5322:14
7:10
+0:18
HALF
13.11 mi11:31:391:30:066:534:38
6:48
-0:22
25K
15.53 mi11:48:311:46:586:5416:52
6:58
+0:10
30K
18.64 mi12:11:272:09:546:5922:56
7:23
+0:25
20M
20.00 mi12:22:002:20:277:0210:33
7:47
+0:24
21M
21.00 mi12:30:112:28:387:058:11
8:11
+0:24
35K
21.75 mi12:36:052:34:327:075:54
7:54
-0:17
23M
23.00 mi12:46:312:44:587:1110:26
8:21
+0:27
24M
24.00 mi12:54:372:53:047:138:06
8:06
-0:15
40K
24.85 mi13:02:123:00:397:177:35
8:53
+0:47
25.2M
25.20 mi13:05:283:03:557:183:16
9:29
+0:36
FINISH
26.22 mi13:13:233:11:507:207:55
7:47
-1:42

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

6:43 /mi

Average Pace

7:19 /mi

Slowest Pace

9:29 /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

1:46:58

56% of race

Time at Steady Pace

1:03:35

33% of race

Time at Slower Pace

21:17

11% of race

Average Pace: 7:19 /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 mi10:22:2320:506:4320:50
6:43
#5958
10K
6.21 mi10:43:3041:576:4621:07
6:48
#6420
15K
9.32 mi11:04:471:03:146:4821:17
6:52
#6679
20K
12.43 mi11:27:011:25:286:5322:14
7:10
#7389
HALF
13.11 mi11:31:391:30:066:534:38
6:48
#7357
25K
15.53 mi11:48:311:46:586:5416:52
6:58
#7294
30K
18.64 mi12:11:272:09:546:5922:56
7:23
#7482
20M
20.00 mi12:22:002:20:277:0210:33
7:47
#7672
21M
21.00 mi12:30:112:28:387:058:11
8:11
#7790
35K
21.75 mi12:36:052:34:327:075:54
7:54
#7973
23M
23.00 mi12:46:312:44:587:1110:26
8:21
#8295
24M
24.00 mi12:54:372:53:047:138:06
8:06
#8531
40K
24.85 mi13:02:123:00:397:177:35
8:53
#8881
25.2M
25.20 mi13:05:283:03:557:183:16
9:29
#8999
FINISH
26.22 mi13:13:233:11:507:207:55
7:47
#9140
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 mi5958544654467342(Top 25%)6419(Top 39%)6419(Top 112%)
10K6.21 mi3.10 mi6420-4625785-3395785-3396949(Top 24%)6167(Top 38%)6167(Top 108%)
15K9.32 mi3.11 mi6679-2595969-1845969-1847342(Top 25%)6419(Top 39%)6419(Top 112%)
20K12.43 mi3.11 mi7389-7106455-4866455-4868991(Top 31%)7412(Top 45%)7412(Top 130%)
HALF13.11 mi0.68 mi7357+326433+226433+227128(Top 25%)6277(Top 38%)6277(Top 110%)
25K15.53 mi2.42 mi7294+636382+516382+517092(Top 24%)6183(Top 38%)6183(Top 108%)
30K18.64 mi3.11 mi7482-1886491-1096491-1098724(Top 30%)7018(Top 43%)7018(Top 123%)
20M20.00 mi1.36 mi7672-1906606-1156606-11511049(Top 38%)8091(Top 50%)8091(Top 141%)
21M21.00 mi1.00 mi7790-1186653-476653-4711053(Top 38%)7991(Top 49%)7991(Top 140%)
35K21.75 mi0.75 mi7973-1836751-986751-9813631(Top 47%)9133(Top 56%)9133(Top 160%)
23M23.00 mi1.25 mi8295-3226909-1586909-15814674(Top 51%)9514(Top 58%)9514(Top 166%)
24M24.00 mi1.00 mi8531-2367008-997008-9914386(Top 50%)9313(Top 57%)9313(Top 163%)
40K24.85 mi0.85 mi8881-3507177-1697177-16917700(Top 61%)10742(Top 66%)10742(Top 188%)
25.2M25.20 mi0.35 mi8999-1187238-617238-6117093(Top 59%)10440(Top 64%)10440(Top 182%)
FINISH26.22 mi1.02 mi9140-1417291-537291-5313484(Top 46%)8773(Top 54%)8773(Top 153%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 25%
×21
+97ft-345ft

Overall

7342

Males

6419

M18-39

6419

5K→10K

3.1 - 6.2 mi

Top 24%
×5
+79ft-138ft

Overall

6949

Males

6167

M18-39

6167

10K→15K

6.2 - 9.3 mi

Top 25%
×3
+67ft-78ft

Overall

7342

Males

6419

M18-39

6419

15K→20K

9.3 - 12.4 mi

Top 31%
×5
+106ft-86ft

Overall

8991

Males

7412

M18-39

7412

20K→HALF

12.4 - 13.1 mi

Top 25%
×2
+19ft-37ft

Overall

7128

Males

6277

M18-39

6277

HALF→25K

13.1 - 15.5 mi

Top 24%
×4
+66ft-88ft

Overall

7092

Males

6183

M18-39

6183

25K→30K

15.5 - 18.6 mi

Top 30%
×9
+181ft-148ft

Overall

8724

Males

7018

M18-39

7018

30K→20M

18.6 - 20.0 mi

Top 38%
×5
+64ft-50ft

Overall

11049

Males

8091

M18-39

8091

20M→21M

20.0 - 21.0 mi

Top 38%
×8
+106ft-24ft

Overall

11053

Males

7991

M18-39

7991

21M→35K

21.0 - 21.8 mi

Top 47%
×7
+17ft-86ft

Overall

13631

Males

9133

M18-39

9133

35K→23M

21.8 - 23.0 mi

Top 51%
×5
+23ft-63ft

Overall

14674

Males

9514

M18-39

9514

23M→24M

23.0 - 24.0 mi

Top 50%
×6
+12ft-82ft

Overall

14386

Males

9313

M18-39

9313

24M→40K

24.0 - 24.9 mi

Top 61%
×1
+6ft-20ft

Overall

17700

Males

10742

M18-39

10742

40K→25.2M

24.9 - 25.2 mi

Top 59%
×1
+13ft-16ft

Overall

17093

Males

10440

M18-39

10440

25.2M→FINISH

25.2 - 26.2 mi

Top 46%
×2
+22ft-21ft

Overall

13484

Males

8773

M18-39

8773

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
654
Passed By
2359
Net Change
-3182
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5958
5K → 10K70200-462#5958#6420
10K → 15K61200-259#6420#6679
15K → 20K39200-710#6679#7389
20K → HALF4614+32#7389#7357
HALF → 25K14481+63#7357#7294
25K → 30K81200-188#7294#7482
30K → 20M36200-190#7482#7672
20M → 21M40158-118#7672#7790
21M → 35K17200-183#7790#7973
35K → 23M31200-322#7973#8295
23M → 24M31200-236#8295#8531
24M → 40K11200-350#8531#8881
40K → 25.2M10128-118#8881#8999
25.2M → FINISH37178-141#8999#9140
TOTALS6542359-3182
📊

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

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