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BOSTON MARATHON 2025

Reona Matsuzaki

Bib: 3580•M

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 15%
Gender (Male)
#0 / 16105
Top 24%
Division (M18-39)
#0 / 5642
Top 49%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:13
Rank: #1780
Start → 5K
19:13 | 6:11/mi
10K· 6.21 mi
38:09
Rank: #1593 (+187)
5K → 10K
18:56 | 6:06/mi
15K· 9.32 mi
56:57
Rank: #1445 (+148)
10K → 15K
18:48 | 6:03/mi
20K· 12.43 mi
1:15:45
Rank: #1306 (+139)
15K → 20K
18:48 | 6:03/mi
Half· 13.11 mi
1:19:48
Rank: #1280 (+26)
20K → Half
4:03 | 5:56/mi
25K· 15.53 mi
1:34:33
Rank: #1230 (+50)
Half → 25K
14:45 | 6:05/mi
30K· 18.64 mi
1:55:51
Rank: #1557 (-327)
25K → 30K
21:18 | 6:51/mi
20M
2:07:07
Rank: #2102 (-545)
30K → 20M
11:16 | 8:17/mi
21M
2:17:02
Rank: #2809 (-707)
20M → 21M
9:55 | 9:55/mi
35K· 21.75 mi
2:23:00
Rank: #3048 (-239)
21M → 35K
5:58 | 7:59/mi
23M
2:33:34
Rank: #3528 (-480)
35K → 23M
10:34 | 8:26/mi
24M
2:41:34
Rank: #3828 (-300)
23M → 24M
8:00 | 8:00/mi
40K· 24.85 mi
2:48:10
Rank: #3978 (-150)
24M → 40K
6:36 | 7:43/mi
25.2M
2:50:58
Rank: #4011 (-33)
40K → 25.2M
2:48 | 8:07/mi
Finish· 26.22 mi
2:58:20
Rank: #4124 (-113)
25.2M → Finish
7:22 | 7:14/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:19:48
Pace6:05 /mi
2nd Half
Distance13.11 mi
Time1:38:32
Pace7:31 /mi
📊Positive Split: 23.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:21:2419:136:1119:13
6:11
-
10K
6.21 mi10:40:2038:096:0818:56
6:06
-0:05
15K
9.32 mi10:59:0856:576:0718:48
6:03
-0:03
20K
12.43 mi11:17:561:15:456:0618:48
6:03
0:00
Half
13.11 mi11:21:591:19:486:054:03
5:56
-0:07
25K
15.53 mi11:36:441:34:336:0514:45
6:05
+0:09
30K
18.64 mi11:58:021:55:516:1321:18
6:51
+0:46
20M
20.00 mi12:09:182:07:076:2111:16
8:17
+1:26
21M
21.00 mi12:19:132:17:026:329:55
9:55
+1:38
35K
21.75 mi12:25:112:23:006:355:58
7:59
-1:56
23M
23.00 mi12:35:452:33:346:4110:34
8:26
+0:27
24M
24.00 mi12:43:452:41:346:448:00
8:00
-0:26
40K
24.85 mi12:50:212:48:106:466:36
7:43
-0:17
25.2M
25.20 mi12:53:092:50:586:472:48
8:07
+0:24
Finish
26.22 mi13:00:312:58:206:487:22
7:14
-0:53

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

5:56 /mi

Average Pace

6:48 /mi

Slowest Pace

9:55 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:34:33

53% of race

Time at Steady Pace

35:16

20% of race

Time at Slower Pace

48:31

27% of race

Average Pace: 6:48 /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 mi10:21:2419:136:1119:13
6:11
#1780
10K
6.21 mi10:40:2038:096:0818:56
6:06
#1593
15K
9.32 mi10:59:0856:576:0718:48
6:03
#1445
20K
12.43 mi11:17:561:15:456:0618:48
6:03
#1306
Half
13.11 mi11:21:591:19:486:054:03
5:56
#1280
25K
15.53 mi11:36:441:34:336:0514:45
6:05
#1230
30K
18.64 mi11:58:021:55:516:1321:18
6:51
#1557
20M
20.00 mi12:09:182:07:076:2111:16
8:17
#2102
21M
21.00 mi12:19:132:17:026:329:55
9:55
#2809
35K
21.75 mi12:25:112:23:006:355:58
7:59
#3048
23M
23.00 mi12:35:452:33:346:4110:34
8:26
#3528
24M
24.00 mi12:43:452:41:346:448:00
8:00
#3828
40K
24.85 mi12:50:212:48:106:466:36
7:43
#3978
25.2M
25.20 mi12:53:092:50:586:472:48
8:07
#4011
Finish
26.22 mi13:00:312:58:206:487:22
7:14
#4124
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi1780169116911204(Top 4%)1142(Top 7%)1142(Top 20%)
10K6.21 mi3.10 mi1593+1871515+1761515+1761446(Top 5%)1373(Top 9%)1373(Top 24%)
15K9.32 mi3.11 mi1445+1481370+1451370+1451204(Top 4%)1142(Top 7%)1142(Top 20%)
20K12.43 mi3.11 mi1306+1391237+1331237+1331010(Top 4%)952(Top 6%)952(Top 17%)
Half13.11 mi0.68 mi1280+261212+251212+25968(Top 3%)918(Top 6%)918(Top 16%)
25K15.53 mi2.42 mi1230+501164+481164+481042(Top 4%)985(Top 6%)985(Top 17%)
30K18.64 mi3.11 mi1557-3271475-3111475-3113778(Top 13%)3492(Top 22%)3492(Top 62%)
20M20.00 mi1.36 mi2102-5452000-5252000-52512387(Top 44%)8706(Top 54%)8706(Top 154%)
21M21.00 mi1.00 mi2809-7072675-6752675-67517941(Top 63%)11123(Top 69%)11123(Top 197%)
35K21.75 mi0.75 mi3048-2392887-2122887-21212038(Top 42%)8318(Top 52%)8318(Top 147%)
23M23.00 mi1.25 mi3528-4803316-4293316-42912890(Top 45%)8636(Top 54%)8636(Top 153%)
24M24.00 mi1.00 mi3828-3003573-2573573-25711192(Top 39%)7745(Top 48%)7745(Top 137%)
40K24.85 mi0.85 mi3978-1503693-1203693-1208155(Top 29%)6054(Top 38%)6054(Top 107%)
25.2M25.20 mi0.35 mi4011-333716-233716-236471(Top 23%)5000(Top 31%)5000(Top 89%)
Finish26.22 mi1.02 mi4124-1133804-883804-887180(Top 25%)5427(Top 34%)5427(Top 96%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 4%
×21stories
+97ft-345ft

Overall

1204

Males

1142

M18-39

1142

5K→10K

3.1 - 6.2 mi

Top 5%
×5stories
+79ft-138ft

Overall

1446

Males

1373

M18-39

1373

10K→15K

6.2 - 9.3 mi

Top 4%
×3stories
+67ft-78ft

Overall

1204

Males

1142

M18-39

1142

15K→20K

9.3 - 12.4 mi

Top 4%
×5stories
+106ft-86ft

Overall

1010

Males

952

M18-39

952

20K→Half

12.4 - 13.1 mi

Top 3%
×2stories
+19ft-37ft

Overall

968

Males

918

M18-39

918

Half→25K

13.1 - 15.5 mi

Top 4%
×4stories
+66ft-88ft

Overall

1042

Males

985

M18-39

985

25K→30K

15.5 - 18.6 mi

Top 13%
×9stories
+181ft-148ft

Overall

3778

Males

3492

M18-39

3492

30K→20M

18.6 - 20.0 mi

Top 44%
×5stories
+64ft-50ft

Overall

12387

Males

8706

M18-39

8706

20M→21M

20.0 - 21.0 mi

Top 63%
×8stories
+106ft-24ft

Overall

17941

Males

11123

M18-39

11123

21M→35K

21.0 - 21.8 mi

Top 42%
×7stories
+17ft-86ft

Overall

12038

Males

8318

M18-39

8318

35K→23M

21.8 - 23.0 mi

Top 45%
×5stories
+23ft-63ft

Overall

12890

Males

8636

M18-39

8636

23M→24M

23.0 - 24.0 mi

Top 39%
×6stories
+12ft-82ft

Overall

11192

Males

7745

M18-39

7745

24M→40K

24.0 - 24.9 mi

Top 29%
×1story
+6ft-20ft

Overall

8155

Males

6054

M18-39

6054

40K→25.2M

24.9 - 25.2 mi

Top 23%
×1story
+13ft-16ft

Overall

6471

Males

5000

M18-39

5000

25.2M→Finish

25.2 - 26.2 mi

Top 25%
×2stories
+22ft-21ft

Overall

7180

Males

5427

M18-39

5427

Passing Analysis

Category:
Athletes Passed
680
Passed By
3024
Net Change
-2344
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1780
5K → 10K21023+187#1780#1593
10K → 15K1513+148#1593#1445
15K → 20K1434+139#1445#1306
20K → Half271+26#1306#1280
Half → 25K6414+50#1280#1230
25K → 30K5332-327#1230#1557
30K → 20M2547-545#1557#2102
20M → 21M3710-707#2102#2809
21M → 35K8247-239#2809#3048
35K → 23M10490-480#3048#3528
23M → 24M11311-300#3528#3828
24M → 40K18168-150#3828#3978
40K → 25.2M1245-33#3978#4011
25.2M → Finish16129-113#4011#4124
TOTALS6803024-2344
📊

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