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BOSTON MARATHON 2025

Mia Matsunami

Bib: 5176•F

CA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 20%
Gender (Female)
#0 / 12228
Top 5%
Division (F18-39)
#0 / 5469
Top 9%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:27
Rank: #4464
Start → 5K
20:27 | 6:35/mi
10K· 6.21 mi
41:04
Rank: #4584 (-120)
5K → 10K
20:37 | 6:38/mi
15K· 9.32 mi
1:01:45
Rank: #4592 (-8)
10K → 15K
20:41 | 6:39/mi
20K· 12.43 mi
1:22:33
Rank: #4499 (+93)
15K → 20K
20:48 | 6:42/mi
Half· 13.11 mi
1:27:08
Rank: #4532 (-33)
20K → Half
4:35 | 6:43/mi
25K· 15.53 mi
1:43:25
Rank: #4438 (+94)
Half → 25K
16:17 | 6:43/mi
30K· 18.64 mi
2:06:00
Rank: #4832 (-394)
25K → 30K
22:35 | 7:16/mi
20M
2:16:25
Rank: #5112 (-280)
30K → 20M
10:25 | 7:40/mi
21M
2:24:40
Rank: #5350 (-238)
20M → 21M
8:15 | 8:15/mi
35K· 21.75 mi
2:29:56
Rank: #5333 (+17)
21M → 35K
5:16 | 7:02/mi
23M
2:39:26
Rank: #5399 (-66)
35K → 23M
9:30 | 7:35/mi
24M
2:46:51
Rank: #5423 (-24)
23M → 24M
7:25 | 7:25/mi
40K· 24.85 mi
2:53:20
Rank: #5429 (-6)
24M → 40K
6:29 | 7:35/mi
25.2M
2:56:20
Rank: #5450 (-21)
40K → 25.2M
3:00 | 8:42/mi
Finish· 26.22 mi
3:04:24
Rank: #5617 (-167)
25.2M → Finish
8:04 | 7:55/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:27:08
Pace6:39 /mi
2nd Half
Distance13.11 mi
Time1:37:16
Pace7:25 /mi
📊Positive Split: 11.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:24:2420:276:3520:27
6:35
-
10K
6.21 mi10:45:0141:046:3720:37
6:38
+0:03
15K
9.32 mi11:05:421:01:456:3820:41
6:39
+0:01
20K
12.43 mi11:26:301:22:336:3920:48
6:42
+0:03
Half
13.11 mi11:31:051:27:086:394:35
6:43
+0:01
25K
15.53 mi11:47:221:43:256:3916:17
6:43
0:00
30K
18.64 mi12:09:572:06:006:4622:35
7:16
+0:33
20M
20.00 mi12:20:222:16:256:4910:25
7:40
+0:24
21M
21.00 mi12:28:372:24:406:538:15
8:15
+0:35
35K
21.75 mi12:33:532:29:566:545:16
7:02
-1:13
23M
23.00 mi12:43:232:39:266:569:30
7:35
+0:33
24M
24.00 mi12:50:482:46:516:577:25
7:25
-0:10
40K
24.85 mi12:57:172:53:206:586:29
7:35
+0:10
25.2M
25.20 mi13:00:172:56:207:003:00
8:42
+1:07
Finish
26.22 mi13:08:213:04:247:028:04
7:55
-0:47

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

6:35 /mi

Average Pace

7:02 /mi

Slowest Pace

8:42 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:43:25

56% of race

Time at Steady Pace

51:15

28% of race

Time at Slower Pace

29:44

16% of race

Average Pace: 7:02 /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 mi10:24:2420:276:3520:27
6:35
#4464
10K
6.21 mi10:45:0141:046:3720:37
6:38
#4584
15K
9.32 mi11:05:421:01:456:3820:41
6:39
#4592
20K
12.43 mi11:26:301:22:336:3920:48
6:42
#4499
Half
13.11 mi11:31:051:27:086:394:35
6:43
#4532
25K
15.53 mi11:47:221:43:256:3916:17
6:43
#4438
30K
18.64 mi12:09:572:06:006:4622:35
7:16
#4832
20M
20.00 mi12:20:222:16:256:4910:25
7:40
#5112
21M
21.00 mi12:28:372:24:406:538:15
8:15
#5350
35K
21.75 mi12:33:532:29:566:545:16
7:02
#5333
23M
23.00 mi12:43:232:39:266:569:30
7:35
#5399
24M
24.00 mi12:50:482:46:516:577:25
7:25
#5423
40K
24.85 mi12:57:172:53:206:586:29
7:35
#5429
25.2M
25.20 mi13:00:172:56:207:003:00
8:42
#5450
Finish
26.22 mi13:08:213:04:247:028:04
7:55
#5617
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi44642602604733(Top 17%)305(Top 2%)305(Top 6%)
10K6.21 mi3.10 mi4584-120275-15275-154769(Top 17%)296(Top 2%)296(Top 5%)
15K9.32 mi3.11 mi4592-8280-5280-54733(Top 17%)305(Top 2%)305(Top 6%)
20K12.43 mi3.11 mi4499+93274+6274+64408(Top 16%)284(Top 2%)284(Top 5%)
Half13.11 mi0.68 mi4532-33279-5279-55323(Top 19%)428(Top 4%)428(Top 8%)
25K15.53 mi2.42 mi4438+94273+6273+64274(Top 15%)301(Top 2%)301(Top 6%)
30K18.64 mi3.11 mi4832-394352-79352-796290(Top 22%)757(Top 6%)757(Top 14%)
20M20.00 mi1.36 mi5112-280401-49401-498136(Top 29%)1582(Top 13%)1582(Top 29%)
21M21.00 mi1.00 mi5350-238447-46447-468896(Top 31%)2101(Top 17%)2101(Top 38%)
35K21.75 mi0.75 mi5333+17446+1446+15669(Top 20%)804(Top 7%)804(Top 15%)
23M23.00 mi1.25 mi5399-66472-26472-267178(Top 25%)1469(Top 12%)1469(Top 27%)
24M24.00 mi1.00 mi5423-24486-14486-147153(Top 25%)1508(Top 12%)1508(Top 28%)
40K24.85 mi0.85 mi5429-6507-21507-217325(Top 26%)1677(Top 14%)1677(Top 31%)
25.2M25.20 mi0.35 mi5450-21519-12519-1210008(Top 35%)2995(Top 24%)2995(Top 55%)
Finish26.22 mi1.02 mi5617-167571-52571-5212295(Top 43%)4065(Top 33%)4065(Top 74%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 17%
×21stories
+97ft-345ft

Overall

4733

Females

305

F18-39

305

5K→10K

3.1 - 6.2 mi

Top 17%
×5stories
+79ft-138ft

Overall

4769

Females

296

F18-39

296

10K→15K

6.2 - 9.3 mi

Top 17%
×3stories
+67ft-78ft

Overall

4733

Females

305

F18-39

305

15K→20K

9.3 - 12.4 mi

Top 16%
×5stories
+106ft-86ft

Overall

4408

Females

284

F18-39

284

20K→Half

12.4 - 13.1 mi

Top 19%
×2stories
+19ft-37ft

Overall

5323

Females

428

F18-39

428

Half→25K

13.1 - 15.5 mi

Top 15%
×4stories
+66ft-88ft

Overall

4274

Females

301

F18-39

301

25K→30K

15.5 - 18.6 mi

Top 22%
×9stories
+181ft-148ft

Overall

6290

Females

757

F18-39

757

30K→20M

18.6 - 20.0 mi

Top 29%
×5stories
+64ft-50ft

Overall

8136

Females

1582

F18-39

1582

20M→21M

20.0 - 21.0 mi

Top 31%
×8stories
+106ft-24ft

Overall

8896

Females

2101

F18-39

2101

21M→35K

21.0 - 21.8 mi

Top 20%
×7stories
+17ft-86ft

Overall

5669

Females

804

F18-39

804

35K→23M

21.8 - 23.0 mi

Top 25%
×5stories
+23ft-63ft

Overall

7178

Females

1469

F18-39

1469

23M→24M

23.0 - 24.0 mi

Top 25%
×6stories
+12ft-82ft

Overall

7153

Females

1508

F18-39

1508

24M→40K

24.0 - 24.9 mi

Top 26%
×1story
+6ft-20ft

Overall

7325

Females

1677

F18-39

1677

40K→25.2M

24.9 - 25.2 mi

Top 35%
×1story
+13ft-16ft

Overall

10008

Females

2995

F18-39

2995

25.2M→Finish

25.2 - 26.2 mi

Top 43%
×2stories
+22ft-21ft

Overall

12295

Females

4065

F18-39

4065

Passing Analysis

Category:
Athletes Passed
873
Passed By
2026
Net Change
-1153
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4464
5K → 10K109229-120#4464#4584
10K → 15K99107-8#4584#4592
15K → 20K15764+93#4592#4499
20K → Half639-33#4499#4532
Half → 25K14854+94#4532#4438
25K → 30K61455-394#4438#4832
30K → 20M26306-280#4832#5112
20M → 21M27265-238#5112#5350
21M → 35K5336+17#5350#5333
35K → 23M63129-66#5333#5399
23M → 24M4367-24#5399#5423
24M → 40K4854-6#5423#5429
40K → 25.2M1940-21#5429#5450
25.2M → Finish14181-167#5450#5617
TOTALS8732026-1153
📊

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