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BOSTON MARATHON 2025

Osamu Tanaka

Bib: 8750•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 18%
Gender (Male)
#0 / 16105
Top 29%
Masters (Masters Men)
#0 / 10463
Top 15%
Division (M55-59)
#0 / 1648
Top 4%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:31
Rank: #2324
Start → 5K
19:31 | 6:17/mi
10K· 6.21 mi
40:10
Rank: #3510 (-1186)
5K → 10K
20:39 | 6:39/mi
15K· 9.32 mi
1:00:58
Rank: #3963 (-453)
10K → 15K
20:48 | 6:42/mi
20K· 12.43 mi
1:22:04
Rank: #4198 (-235)
15K → 20K
21:06 | 6:47/mi
Half· 13.11 mi
1:26:36
Rank: #4219 (-21)
20K → Half
4:32 | 6:39/mi
25K· 15.53 mi
1:43:20
Rank: #4388 (-169)
Half → 25K
16:44 | 6:54/mi
30K· 18.64 mi
2:05:36
Rank: #4632 (-244)
25K → 30K
22:16 | 7:10/mi
20M
2:15:23
Rank: #4687 (-55)
30K → 20M
9:47 | 7:12/mi
21M
2:23:23
Rank: #4836 (-149)
20M → 21M
8:00 | 8:00/mi
35K· 21.75 mi
2:28:53
Rank: #4936 (-100)
21M → 35K
5:30 | 7:21/mi
23M
2:38:07
Rank: #5000 (-64)
35K → 23M
9:14 | 7:22/mi
24M
2:45:18
Rank: #5037 (-37)
23M → 24M
7:11 | 7:11/mi
40K· 24.85 mi
2:51:38
Rank: #5050 (-13)
24M → 40K
6:20 | 7:24/mi
25.2M
2:54:27
Rank: #5056 (-6)
40K → 25.2M
2:49 | 8:10/mi
Finish· 26.22 mi
3:02:09
Rank: #5150 (-94)
25.2M → Finish
7:42 | 7:33/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:26:36
Pace6:36 /mi
2nd Half
Distance13.11 mi
Time1:35:33
Pace7:17 /mi
📊Positive Split: 10.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:44:3819:316:1719:31
6:17
-
10K
6.21 mi11:05:1740:106:2820:39
6:39
+0:22
15K
9.32 mi11:26:051:00:586:3220:48
6:42
+0:03
20K
12.43 mi11:47:111:22:046:3621:06
6:47
+0:05
Half
13.11 mi11:51:431:26:366:364:32
6:39
-0:08
25K
15.53 mi12:08:271:43:206:3916:44
6:54
+0:15
30K
18.64 mi12:30:432:05:366:4422:16
7:10
+0:16
20M
20.00 mi12:40:302:15:236:469:47
7:12
+0:02
21M
21.00 mi12:48:302:23:236:508:00
8:00
+0:48
35K
21.75 mi12:54:002:28:536:515:30
7:21
-0:39
23M
23.00 mi13:03:142:38:076:529:14
7:22
+0:01
24M
24.00 mi13:10:252:45:186:537:11
7:11
-0:11
40K
24.85 mi13:16:452:51:386:546:20
7:24
+0:13
25.2M
25.20 mi13:19:342:54:276:552:49
8:10
+0:46
Finish
26.22 mi13:27:163:02:096:577:42
7:33
-0:37

Checkpoints & Pacing

📈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

6:17 /mi

Average Pace

6:57 /mi

Slowest Pace

8:10 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:43:20

57% of race

Time at Steady Pace

1:00:18

33% of race

Time at Slower Pace

18:31

10% of race

Average Pace: 6:57 /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

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi10:44:3819:316:1719:31
6:17
#2324
10K
6.21 mi11:05:1740:106:2820:39
6:39
#3510
15K
9.32 mi11:26:051:00:586:3220:48
6:42
#3963
20K
12.43 mi11:47:111:22:046:3621:06
6:47
#4198
Half
13.11 mi11:51:431:26:366:364:32
6:39
#4219
25K
15.53 mi12:08:271:43:206:3916:44
6:54
#4388
30K
18.64 mi12:30:432:05:366:4422:16
7:10
#4632
20M
20.00 mi12:40:302:15:236:469:47
7:12
#4687
21M
21.00 mi12:48:302:23:236:508:00
8:00
#4836
35K
21.75 mi12:54:002:28:536:515:30
7:21
#4936
23M
23.00 mi13:03:142:38:076:529:14
7:22
#5000
24M
24.00 mi13:10:252:45:186:537:11
7:11
#5037
40K
24.85 mi13:16:452:51:386:546:20
7:24
#5050
25.2M
25.20 mi13:19:342:54:276:552:49
8:10
#5056
Finish
26.22 mi13:27:163:02:096:577:42
7:33
#5150
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi2324221822185023(Top 18%)4668(Top 29%)4668(Top 283%)
10K6.21 mi3.10 mi3510-11863332-11143332-11144836(Top 17%)4519(Top 28%)4519(Top 274%)
15K9.32 mi3.11 mi3963-4533734-4023734-4025023(Top 18%)4668(Top 29%)4668(Top 283%)
20K12.43 mi3.11 mi4198-2353949-2153949-2155199(Top 18%)4788(Top 30%)4788(Top 291%)
Half13.11 mi0.68 mi4219-213967-183967-184775(Top 17%)4435(Top 28%)4435(Top 269%)
25K15.53 mi2.42 mi4388-1694112-1454112-1455672(Top 20%)5134(Top 32%)5134(Top 312%)
30K18.64 mi3.11 mi4632-2444305-1934305-1935697(Top 20%)5087(Top 32%)5087(Top 309%)
20M20.00 mi1.36 mi4687-554343-384343-385180(Top 18%)4610(Top 29%)4610(Top 280%)
21M21.00 mi1.00 mi4836-1494462-1194462-1197310(Top 26%)5845(Top 36%)5845(Top 355%)
35K21.75 mi0.75 mi4936-1004537-754537-757490(Top 26%)5967(Top 37%)5967(Top 362%)
23M23.00 mi1.25 mi5000-644582-454582-455869(Top 21%)4883(Top 30%)4883(Top 296%)
24M24.00 mi1.00 mi5037-374604-224604-225688(Top 20%)4713(Top 29%)4713(Top 286%)
40K24.85 mi0.85 mi5050-134605-14605-16204(Top 22%)4964(Top 31%)4964(Top 301%)
25.2M25.20 mi0.35 mi5056-64607-24607-26775(Top 24%)5194(Top 32%)5194(Top 315%)
Finish26.22 mi1.02 mi5150-944672-654672-659554(Top 34%)6726(Top 42%)6726(Top 408%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 18%
×21stories
+97ft-345ft

Overall

5023

Males

4668

M55-59

4668

5K→10K

3.1 - 6.2 mi

Top 17%
×5stories
+79ft-138ft

Overall

4836

Males

4519

M55-59

4519

10K→15K

6.2 - 9.3 mi

Top 18%
×3stories
+67ft-78ft

Overall

5023

Males

4668

M55-59

4668

15K→20K

9.3 - 12.4 mi

Top 18%
×5stories
+106ft-86ft

Overall

5199

Males

4788

M55-59

4788

20K→Half

12.4 - 13.1 mi

Top 17%
×2stories
+19ft-37ft

Overall

4775

Males

4435

M55-59

4435

Half→25K

13.1 - 15.5 mi

Top 20%
×4stories
+66ft-88ft

Overall

5672

Males

5134

M55-59

5134

25K→30K

15.5 - 18.6 mi

Top 20%
×9stories
+181ft-148ft

Overall

5697

Males

5087

M55-59

5087

30K→20M

18.6 - 20.0 mi

Top 18%
×5stories
+64ft-50ft

Overall

5180

Males

4610

M55-59

4610

20M→21M

20.0 - 21.0 mi

Top 26%
×8stories
+106ft-24ft

Overall

7310

Males

5845

M55-59

5845

21M→35K

21.0 - 21.8 mi

Top 26%
×7stories
+17ft-86ft

Overall

7490

Males

5967

M55-59

5967

35K→23M

21.8 - 23.0 mi

Top 21%
×5stories
+23ft-63ft

Overall

5869

Males

4883

M55-59

4883

23M→24M

23.0 - 24.0 mi

Top 20%
×6stories
+12ft-82ft

Overall

5688

Males

4713

M55-59

4713

24M→40K

24.0 - 24.9 mi

Top 22%
×1story
+6ft-20ft

Overall

6204

Males

4964

M55-59

4964

40K→25.2M

24.9 - 25.2 mi

Top 24%
×1story
+13ft-16ft

Overall

6775

Males

5194

M55-59

5194

25.2M→Finish

25.2 - 26.2 mi

Top 34%
×2stories
+22ft-21ft

Overall

9554

Males

6726

M55-59

6726

Passing Analysis

Category:
Athletes Passed
531
Passed By
3357
Net Change
-2826
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2324
5K → 10K31189-1186#2324#3510
10K → 15K24477-453#3510#3963
15K → 20K42277-235#3963#4198
20K → Half1233-21#4198#4219
Half → 25K48217-169#4219#4388
25K → 30K83327-244#4388#4632
30K → 20M54109-55#4632#4687
20M → 21M32181-149#4687#4836
21M → 35K35135-100#4836#4936
35K → 23M66130-64#4936#5000
23M → 24M4784-37#5000#5037
24M → 40K4659-13#5037#5050
40K → 25.2M2026-6#5050#5056
25.2M → Finish19113-94#5056#5150
TOTALS5313357-2826
📊

Passing Visuals

Category:
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🔥Passing Intensity

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing