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BOSTON MARATHON 2026

Kazuma Koreeda

Bib: 2613β€’M

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0:00
0:00
/ mi
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Overall
#0 / 29021
Top 14%
Gender (Male)
#0 / 16340
Top 24%
Age Group (M18-39)
#0 / 5723
Top 50%
Race Day Weather
51Β°/41Β°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
19:26
3.11 mi
Rank: #2412
Start β†’ 5K
19:26 | 6:16/mi
10K
38:52
6.21 mi
Rank: #2480 (-68)
5K β†’ 10K
19:26 | 6:16/mi
15K
58:23
9.32 mi
Rank: #2550 (-70)
10K β†’ 15K
19:31 | 6:17/mi
20K
1:17:59
12.43 mi
Rank: #2537 (+13)
15K β†’ 20K
19:36 | 6:19/mi
HALF
1:22:09
13.11 mi
Rank: #2504 (+33)
20K β†’ HALF
4:10 | 6:07/mi
25K
1:37:42
15.53 mi
Rank: #2543 (-39)
HALF β†’ 25K
15:33 | 6:25/mi
30K
1:58:38
18.64 mi
Rank: #2784 (-241)
25K β†’ 30K
20:56 | 6:45/mi
20M
2:08:08
20.00 mi
Rank: #2939 (-155)
30K β†’ 20M
9:30 | 7:00/mi
21M
2:15:45
21.00 mi
Rank: #3082 (-143)
20M β†’ 21M
7:37 | 7:37/mi
35K
2:21:07
21.75 mi
Rank: #3237 (-155)
21M β†’ 35K
5:22 | 7:11/mi
23M
2:30:18
23.00 mi
Rank: #3424 (-187)
35K β†’ 23M
9:11 | 7:21/mi
24M
2:37:40
24.00 mi
Rank: #3594 (-170)
23M β†’ 24M
7:22 | 7:22/mi
40K
2:44:12
24.85 mi
Rank: #3761 (-167)
24M β†’ 40K
6:32 | 7:39/mi
25.2M
2:47:07
25.20 mi
Rank: #3865 (-104)
40K β†’ 25.2M
2:55 | 8:28/mi
FINISH
2:54:51
26.22 mi
Rank: #4166 (-301)
25.2M β†’ FINISH
7:44 | 7:36/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:22:09
Pace6:16 /mi
2nd Half
Distance13.11 mi
Time1:32:42
Pace7:05 /mi
πŸ“ŠPositive Split: 12.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:20:1219:266:1619:26
6:16
-
10K
6.21 mi10:39:3838:526:1619:26
6:16
0:00
15K
9.32 mi10:59:0958:236:1619:31
6:17
+0:01
20K
12.43 mi11:18:451:17:596:1719:36
6:19
+0:02
HALF
13.11 mi11:22:551:22:096:164:10
6:07
-0:12
25K
15.53 mi11:38:281:37:426:1815:33
6:25
+0:18
30K
18.64 mi11:59:241:58:386:2220:56
6:45
+0:20
20M
20.00 mi12:08:542:08:086:259:30
7:00
+0:15
21M
21.00 mi12:16:312:15:456:287:37
7:37
+0:37
35K
21.75 mi12:21:532:21:076:305:22
7:11
-0:26
23M
23.00 mi12:31:042:30:186:339:11
7:21
+0:10
24M
24.00 mi12:38:262:37:406:357:22
7:22
+0:01
40K
24.85 mi12:44:582:44:126:376:32
7:39
+0:17
25.2M
25.20 mi12:47:532:47:076:382:55
8:28
+0:49
FINISH
26.22 mi12:55:372:54:516:417:44
7:36
-0:52

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

6:07 /mi

Average Pace

6:40 /mi

Slowest Pace

8:28 /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

1:37:42

56% of race

Time at Steady Pace

35:48

20% of race

Time at Slower Pace

41:21

24% of race

Average Pace: 6:40 /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 mi10:20:1219:266:1619:26
6:16
#2412
10K
6.21 mi10:39:3838:526:1619:26
6:16
#2480
15K
9.32 mi10:59:0958:236:1619:31
6:17
#2550
20K
12.43 mi11:18:451:17:596:1719:36
6:19
#2537
HALF
13.11 mi11:22:551:22:096:164:10
6:07
#2504
25K
15.53 mi11:38:281:37:426:1815:33
6:25
#2543
30K
18.64 mi11:59:241:58:386:2220:56
6:45
#2784
20M
20.00 mi12:08:542:08:086:259:30
7:00
#2939
21M
21.00 mi12:16:312:15:456:287:37
7:37
#3082
35K
21.75 mi12:21:532:21:076:305:22
7:11
#3237
23M
23.00 mi12:31:042:30:186:339:11
7:21
#3424
24M
24.00 mi12:38:262:37:406:357:22
7:22
#3594
40K
24.85 mi12:44:582:44:126:376:32
7:39
#3761
25.2M
25.20 mi12:47:532:47:076:382:55
8:28
#3865
FINISH
26.22 mi12:55:372:54:516:417:44
7:36
#4166
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 mi2412232023202764(Top 10%)2657(Top 16%)2657(Top 46%)
10K6.21 mi3.10 mi2480-682389-692389-692569(Top 9%)2474(Top 15%)2474(Top 43%)
15K9.32 mi3.11 mi2550-702455-662455-662764(Top 10%)2657(Top 16%)2657(Top 46%)
20K12.43 mi3.11 mi2537+132447+82447+82634(Top 9%)2534(Top 16%)2534(Top 44%)
HALF13.11 mi0.68 mi2504+332415+322415+322055(Top 7%)1990(Top 12%)1990(Top 35%)
25K15.53 mi2.42 mi2543-392450-352450-352977(Top 10%)2856(Top 17%)2856(Top 50%)
30K18.64 mi3.11 mi2784-2412675-2252675-2253916(Top 13%)3648(Top 22%)3648(Top 64%)
20M20.00 mi1.36 mi2939-1552820-1452820-1455467(Top 19%)4852(Top 30%)4852(Top 85%)
21M21.00 mi1.00 mi3082-1432949-1292949-1297219(Top 25%)5890(Top 36%)5890(Top 103%)
35K21.75 mi0.75 mi3237-1553095-1463095-1468281(Top 29%)6552(Top 40%)6552(Top 114%)
23M23.00 mi1.25 mi3424-1873260-1653260-1657682(Top 26%)6156(Top 38%)6156(Top 108%)
24M24.00 mi1.00 mi3594-1703404-1443404-1449044(Top 31%)6803(Top 42%)6803(Top 119%)
40K24.85 mi0.85 mi3761-1673528-1243528-1249834(Top 34%)7106(Top 43%)7106(Top 124%)
25.2M25.20 mi0.35 mi3865-1043619-913619-9111212(Top 39%)7677(Top 47%)7677(Top 134%)
FINISH26.22 mi1.02 mi4166-3013873-2543873-25412055(Top 42%)8112(Top 50%)8112(Top 142%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 10%
Γ—21
+97ft-345ft

Overall

2764

Males

2657

M18-39

2657

5K→10K

3.1 - 6.2 mi

Top 9%
Γ—5
+79ft-138ft

Overall

2569

Males

2474

M18-39

2474

10K→15K

6.2 - 9.3 mi

Top 10%
Γ—3
+67ft-78ft

Overall

2764

Males

2657

M18-39

2657

15K→20K

9.3 - 12.4 mi

Top 9%
Γ—5
+106ft-86ft

Overall

2634

Males

2534

M18-39

2534

20K→HALF

12.4 - 13.1 mi

Top 7%
Γ—2
+19ft-37ft

Overall

2055

Males

1990

M18-39

1990

HALF→25K

13.1 - 15.5 mi

Top 10%
Γ—4
+66ft-88ft

Overall

2977

Males

2856

M18-39

2856

25K→30K

15.5 - 18.6 mi

Top 13%
Γ—9
+181ft-148ft

Overall

3916

Males

3648

M18-39

3648

30K→20M

18.6 - 20.0 mi

Top 19%
Γ—5
+64ft-50ft

Overall

5467

Males

4852

M18-39

4852

20M→21M

20.0 - 21.0 mi

Top 25%
Γ—8
+106ft-24ft

Overall

7219

Males

5890

M18-39

5890

21M→35K

21.0 - 21.8 mi

Top 29%
Γ—7
+17ft-86ft

Overall

8281

Males

6552

M18-39

6552

35K→23M

21.8 - 23.0 mi

Top 26%
Γ—5
+23ft-63ft

Overall

7682

Males

6156

M18-39

6156

23M→24M

23.0 - 24.0 mi

Top 31%
Γ—6
+12ft-82ft

Overall

9044

Males

6803

M18-39

6803

24M→40K

24.0 - 24.9 mi

Top 34%
Γ—1
+6ft-20ft

Overall

9834

Males

7106

M18-39

7106

40K→25.2M

24.9 - 25.2 mi

Top 39%
Γ—1
+13ft-16ft

Overall

11212

Males

7677

M18-39

7677

25.2M→FINISH

25.2 - 26.2 mi

Top 42%
Γ—2
+22ft-21ft

Overall

12055

Males

8112

M18-39

8112

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
410
Passed By
1970
Net Change
-1754
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start β†’ 5K----#2412
5K β†’ 10K63131-68#2412#2480
10K β†’ 15K49119-70#2480#2550
15K β†’ 20K7461+13#2550#2537
20K β†’ HALF341+33#2537#2504
HALF β†’ 25K5291-39#2504#2543
25K β†’ 30K32200-241#2543#2784
30K β†’ 20M19174-155#2784#2939
20M β†’ 21M15158-143#2939#3082
21M β†’ 35K5160-155#3082#3237
35K β†’ 23M25200-187#3237#3424
23M β†’ 24M17187-170#3424#3594
24M β†’ 40K13180-167#3594#3761
40K β†’ 25.2M4108-104#3761#3865
25.2M β†’ FINISH8200-301#3865#4166
TOTALS4101970-1754
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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Activity Data

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing