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BOSTON MARATHON 2025

Tomonari Furukawa

Bib: 18787•M

VA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 42%
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Top 45%
Division (M55-59)
#0 / 1648
Top 30%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:14
Rank: #12045
Start → 5K
23:14 | 7:29/mi
10K· 6.21 mi
46:09
Rank: #11482 (+563)
5K → 10K
22:55 | 7:23/mi
15K· 9.32 mi
1:09:41
Rank: #11768 (-286)
10K → 15K
23:32 | 7:34/mi
20K· 12.43 mi
1:33:52
Rank: #12107 (-339)
15K → 20K
24:11 | 7:47/mi
Half· 13.11 mi
1:39:02
Rank: #12112 (-5)
20K → Half
5:10 | 7:34/mi
25K· 15.53 mi
1:57:56
Rank: #12097 (+15)
Half → 25K
18:54 | 7:48/mi
30K· 18.64 mi
2:23:09
Rank: #12067 (+30)
25K → 30K
25:13 | 8:07/mi
20M
2:34:23
Rank: #12068 (-1)
30K → 20M
11:14 | 8:16/mi
21M
2:43:11
Rank: #12065 (+3)
20M → 21M
8:48 | 8:48/mi
35K· 21.75 mi
2:48:59
Rank: #11976 (+89)
21M → 35K
5:48 | 7:45/mi
23M
2:59:16
Rank: #11923 (+53)
35K → 23M
10:17 | 8:13/mi
24M
3:07:17
Rank: #11865 (+58)
23M → 24M
8:01 | 8:01/mi
40K· 24.85 mi
3:14:26
Rank: #11880 (-15)
24M → 40K
7:09 | 8:22/mi
25.2M
3:17:38
Rank: #11907 (-27)
40K → 25.2M
3:12 | 9:17/mi
Finish· 26.22 mi
3:25:59
Rank: #11984 (-77)
25.2M → Finish
8:21 | 8:12/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:39:02
Pace7:33 /mi
2nd Half
Distance13.11 mi
Time1:46:57
Pace8:10 /mi
📊Positive Split: 8.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:3223:147:2923:14
7:29
-
10K
6.21 mi11:37:2746:097:2622:55
7:23
-0:06
15K
9.32 mi12:00:591:09:417:2923:32
7:34
+0:11
20K
12.43 mi12:25:101:33:527:3324:11
7:47
+0:13
Half
13.11 mi12:30:201:39:027:335:10
7:34
-0:13
25K
15.53 mi12:49:141:57:567:3618:54
7:48
+0:14
30K
18.64 mi13:14:272:23:097:4125:13
8:07
+0:19
20M
20.00 mi13:25:412:34:237:4311:14
8:16
+0:09
21M
21.00 mi13:34:292:43:117:468:48
8:48
+0:32
35K
21.75 mi13:40:172:48:597:465:48
7:45
-1:03
23M
23.00 mi13:50:342:59:167:4810:17
8:13
+0:28
24M
24.00 mi13:58:353:07:177:488:01
8:01
-0:12
40K
24.85 mi14:05:443:14:267:497:09
8:22
+0:21
25.2M
25.20 mi14:08:563:17:387:513:12
9:17
+0:55
Finish
26.22 mi14:17:173:25:597:528:21
8:12
-1:05

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

7:23 /mi

Average Pace

7:52 /mi

Slowest Pace

9:17 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:20:39

39% of race

Time at Steady Pace

1:34:57

46% of race

Time at Slower Pace

30:23

15% of race

Average Pace: 7:51 /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 mi11:14:3223:147:2923:14
7:29
#12045
10K
6.21 mi11:37:2746:097:2622:55
7:23
#11482
15K
9.32 mi12:00:591:09:417:2923:32
7:34
#11768
20K
12.43 mi12:25:101:33:527:3324:11
7:47
#12107
Half
13.11 mi12:30:201:39:027:335:10
7:34
#12112
25K
15.53 mi12:49:141:57:567:3618:54
7:48
#12097
30K
18.64 mi13:14:272:23:097:4125:13
8:07
#12067
20M
20.00 mi13:25:412:34:237:4311:14
8:16
#12068
21M
21.00 mi13:34:292:43:117:468:48
8:48
#12065
35K
21.75 mi13:40:172:48:597:465:48
7:45
#11976
23M
23.00 mi13:50:342:59:167:4810:17
8:13
#11923
24M
24.00 mi13:58:353:07:177:488:01
8:01
#11865
40K
24.85 mi14:05:443:14:267:497:09
8:22
#11880
25.2M
25.20 mi14:08:563:17:387:513:12
9:17
#11907
Finish
26.22 mi14:17:173:25:597:528:21
8:12
#11984
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi120459193919312358(Top 44%)9228(Top 57%)9228(Top 560%)
10K6.21 mi3.10 mi11482+5638911+2828911+28210968(Top 39%)8646(Top 54%)8646(Top 525%)
15K9.32 mi3.11 mi11768-2869036-1259036-12512358(Top 44%)9228(Top 57%)9228(Top 560%)
20K12.43 mi3.11 mi12107-3399143-1079143-10713107(Top 46%)9461(Top 59%)9461(Top 574%)
Half13.11 mi0.68 mi12112-59137+69137+612286(Top 43%)9141(Top 57%)9141(Top 555%)
25K15.53 mi2.42 mi12097+159098+399098+3912283(Top 43%)8982(Top 56%)8982(Top 545%)
30K18.64 mi3.11 mi12067+309009+899009+8912208(Top 43%)8783(Top 55%)8783(Top 533%)
20M20.00 mi1.36 mi12068-18967+428967+4212242(Top 43%)8639(Top 54%)8639(Top 524%)
21M21.00 mi1.00 mi12065+38930+378930+3712273(Top 43%)8498(Top 53%)8498(Top 516%)
35K21.75 mi0.75 mi11976+898864+668864+6610447(Top 37%)7601(Top 47%)7601(Top 461%)
23M23.00 mi1.25 mi11923+538799+658799+6511426(Top 40%)7956(Top 49%)7956(Top 483%)
24M24.00 mi1.00 mi11865+588735+648735+6411333(Top 40%)7824(Top 49%)7824(Top 475%)
40K24.85 mi0.85 mi11880-158704+318704+3112512(Top 44%)8282(Top 51%)8282(Top 503%)
25.2M25.20 mi0.35 mi11907-278702+28702+213294(Top 47%)8600(Top 53%)8600(Top 522%)
Finish26.22 mi1.02 mi11984-778714-128714-1214198(Top 50%)9108(Top 57%)9108(Top 553%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 44%
×21stories
+97ft-345ft

Overall

12358

Males

9228

M55-59

9228

5K→10K

3.1 - 6.2 mi

Top 39%
×5stories
+79ft-138ft

Overall

10968

Males

8646

M55-59

8646

10K→15K

6.2 - 9.3 mi

Top 44%
×3stories
+67ft-78ft

Overall

12358

Males

9228

M55-59

9228

15K→20K

9.3 - 12.4 mi

Top 46%
×5stories
+106ft-86ft

Overall

13107

Males

9461

M55-59

9461

20K→Half

12.4 - 13.1 mi

Top 43%
×2stories
+19ft-37ft

Overall

12286

Males

9141

M55-59

9141

Half→25K

13.1 - 15.5 mi

Top 43%
×4stories
+66ft-88ft

Overall

12283

Males

8982

M55-59

8982

25K→30K

15.5 - 18.6 mi

Top 43%
×9stories
+181ft-148ft

Overall

12208

Males

8783

M55-59

8783

30K→20M

18.6 - 20.0 mi

Top 43%
×5stories
+64ft-50ft

Overall

12242

Males

8639

M55-59

8639

20M→21M

20.0 - 21.0 mi

Top 43%
×8stories
+106ft-24ft

Overall

12273

Males

8498

M55-59

8498

21M→35K

21.0 - 21.8 mi

Top 37%
×7stories
+17ft-86ft

Overall

10447

Males

7601

M55-59

7601

35K→23M

21.8 - 23.0 mi

Top 40%
×5stories
+23ft-63ft

Overall

11426

Males

7956

M55-59

7956

23M→24M

23.0 - 24.0 mi

Top 40%
×6stories
+12ft-82ft

Overall

11333

Males

7824

M55-59

7824

24M→40K

24.0 - 24.9 mi

Top 44%
×1story
+6ft-20ft

Overall

12512

Males

8282

M55-59

8282

40K→25.2M

24.9 - 25.2 mi

Top 47%
×1story
+13ft-16ft

Overall

13294

Males

8600

M55-59

8600

25.2M→Finish

25.2 - 26.2 mi

Top 50%
×2stories
+22ft-21ft

Overall

14198

Males

9108

M55-59

9108

Passing Analysis

Category:
Athletes Passed
2012
Passed By
1951
Net Change
+61
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12045
5K → 10K64178+563#12045#11482
10K → 15K96382-286#11482#11768
15K → 20K104443-339#11768#12107
20K → Half3136-5#12107#12112
Half → 25K167152+15#12112#12097
25K → 30K263233+30#12097#12067
30K → 20M112113-1#12067#12068
20M → 21M105102+3#12068#12065
21M → 35K10718+89#12065#11976
35K → 23M13178+53#11976#11923
23M → 24M10143+58#11923#11865
24M → 40K8196-15#11865#11880
40K → 25.2M2451-27#11880#11907
25.2M → Finish49126-77#11907#11984
TOTALS20121951+61
📊

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