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BOSTON MARATHON 2025

Mia Grossman

Bib: 27436•F

MA

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

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
29:09
Rank: #23855
Start → 5K
29:09 | 9:23/mi
10K· 6.21 mi
57:19
Rank: #23296 (+559)
5K → 10K
28:10 | 9:04/mi
15K· 9.32 mi
1:25:32
Rank: #23001 (+295)
10K → 15K
28:13 | 9:05/mi
20K· 12.43 mi
1:54:04
Rank: #22694 (+307)
15K → 20K
28:32 | 9:11/mi
Half· 13.11 mi
2:00:21
Rank: #22688 (+6)
20K → Half
6:17 | 9:13/mi
25K· 15.53 mi
2:23:24
Rank: #22547 (+141)
Half → 25K
23:03 | 9:30/mi
30K· 18.64 mi
2:54:24
Rank: #22347 (+200)
25K → 30K
31:00 | 9:59/mi
20M
3:07:42
Rank: #22197 (+150)
30K → 20M
13:18 | 9:47/mi
21M
3:18:50
Rank: #22143 (+54)
20M → 21M
11:08 | 11:08/mi
35K· 21.75 mi
3:26:00
Rank: #22078 (+65)
21M → 35K
7:10 | 9:35/mi
23M
3:38:04
Rank: #21891 (+187)
35K → 23M
12:04 | 9:38/mi
24M
3:47:27
Rank: #21781 (+110)
23M → 24M
9:23 | 9:23/mi
40K· 24.85 mi
3:55:43
Rank: #21697 (+84)
24M → 40K
8:16 | 9:40/mi
25.2M
3:59:13
Rank: #21621 (+76)
40K → 25.2M
3:30 | 10:09/mi
Finish· 26.22 mi
4:08:30
Rank: #21536 (+85)
25.2M → Finish
9:17 | 9:07/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:00:21
Pace9:11 /mi
2nd Half
Distance13.11 mi
Time2:08:09
Pace9:47 /mi
📊Positive Split: 6.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:45:1229:099:2329:09
9:23
-
10K
6.21 mi12:13:2257:199:1328:10
9:04
-0:19
15K
9.32 mi12:41:351:25:329:1128:13
9:05
+0:01
20K
12.43 mi13:10:071:54:049:1128:32
9:11
+0:06
Half
13.11 mi13:16:242:00:219:116:17
9:13
+0:02
25K
15.53 mi13:39:272:23:249:1423:03
9:30
+0:17
30K
18.64 mi14:10:272:54:249:2131:00
9:59
+0:29
20M
20.00 mi14:23:453:07:429:2313:18
9:47
-0:12
21M
21.00 mi14:34:533:18:509:2811:08
11:08
+1:21
35K
21.75 mi14:42:033:26:009:287:10
9:35
-1:33
23M
23.00 mi14:54:073:38:049:2912:04
9:38
+0:03
24M
24.00 mi15:03:303:47:279:299:23
9:23
-0:15
40K
24.85 mi15:11:463:55:439:298:16
9:40
+0:17
25.2M
25.20 mi15:15:163:59:139:303:30
10:09
+0:29
Finish
26.22 mi15:24:334:08:309:299:17
9:07
-1:02

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

9:04 /mi

Average Pace

9:29 /mi

Slowest Pace

11:08 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:40:29

40% of race

Time at Steady Pace

1:29:05

36% of race

Time at Slower Pace

58:56

24% of race

Average Pace: 9:29 /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 mi11:45:1229:099:2329:09
9:23
#23855
10K
6.21 mi12:13:2257:199:1328:10
9:04
#23296
15K
9.32 mi12:41:351:25:329:1128:13
9:05
#23001
20K
12.43 mi13:10:071:54:049:1128:32
9:11
#22694
Half
13.11 mi13:16:242:00:219:116:17
9:13
#22688
25K
15.53 mi13:39:272:23:249:1423:03
9:30
#22547
30K
18.64 mi14:10:272:54:249:2131:00
9:59
#22347
20M
20.00 mi14:23:453:07:429:2313:18
9:47
#22197
21M
21.00 mi14:34:533:18:509:2811:08
11:08
#22143
35K
21.75 mi14:42:033:26:009:287:10
9:35
#22078
23M
23.00 mi14:54:073:38:049:2912:04
9:38
#21891
24M
24.00 mi15:03:303:47:279:299:23
9:23
#21781
40K
24.85 mi15:11:463:55:439:298:16
9:40
#21697
25.2M
25.20 mi15:15:163:59:139:303:30
10:09
#21621
Finish
26.22 mi15:24:334:08:309:299:17
9:07
#21536
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi238559621962122388(Top 79%)8772(Top 72%)8772(Top 160%)
10K6.21 mi3.10 mi23296+5599313+3089313+30822676(Top 80%)8957(Top 73%)8957(Top 164%)
15K9.32 mi3.11 mi23001+2959126+1879126+18722388(Top 79%)8772(Top 72%)8772(Top 160%)
20K12.43 mi3.11 mi22694+3078950+1768950+17621831(Top 77%)8498(Top 69%)8498(Top 155%)
Half13.11 mi0.68 mi22688+68947+38947+322648(Top 80%)8952(Top 73%)8952(Top 164%)
25K15.53 mi2.42 mi22547+1418891+568891+5621893(Top 77%)8595(Top 70%)8595(Top 157%)
30K18.64 mi3.11 mi22347+2008819+728819+7221544(Top 76%)8519(Top 70%)8519(Top 156%)
20M20.00 mi1.36 mi22197+1508750+698750+6920274(Top 71%)7953(Top 65%)7953(Top 145%)
21M21.00 mi1.00 mi22143+548751-18751-121741(Top 77%)8830(Top 72%)8830(Top 161%)
35K21.75 mi0.75 mi22078+658718+338718+3320641(Top 73%)8323(Top 68%)8323(Top 152%)
23M23.00 mi1.25 mi21891+1878655+638655+6319248(Top 68%)7648(Top 63%)7648(Top 140%)
24M24.00 mi1.00 mi21781+1108620+358620+3519192(Top 68%)7653(Top 63%)7653(Top 140%)
40K24.85 mi0.85 mi21697+848597+238597+2319379(Top 68%)7831(Top 64%)7831(Top 143%)
25.2M25.20 mi0.35 mi21621+768555+428555+4217779(Top 63%)7031(Top 57%)7031(Top 129%)
Finish26.22 mi1.02 mi21536+858517+388517+3819577(Top 69%)7914(Top 65%)7914(Top 145%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 79%
×21stories
+97ft-345ft

Overall

22388

Females

8772

F18-39

8772

5K→10K

3.1 - 6.2 mi

Top 80%
×5stories
+79ft-138ft

Overall

22676

Females

8957

F18-39

8957

10K→15K

6.2 - 9.3 mi

Top 79%
×3stories
+67ft-78ft

Overall

22388

Females

8772

F18-39

8772

15K→20K

9.3 - 12.4 mi

Top 77%
×5stories
+106ft-86ft

Overall

21831

Females

8498

F18-39

8498

20K→Half

12.4 - 13.1 mi

Top 80%
×2stories
+19ft-37ft

Overall

22648

Females

8952

F18-39

8952

Half→25K

13.1 - 15.5 mi

Top 77%
×4stories
+66ft-88ft

Overall

21893

Females

8595

F18-39

8595

25K→30K

15.5 - 18.6 mi

Top 76%
×9stories
+181ft-148ft

Overall

21544

Females

8519

F18-39

8519

30K→20M

18.6 - 20.0 mi

Top 71%
×5stories
+64ft-50ft

Overall

20274

Females

7953

F18-39

7953

20M→21M

20.0 - 21.0 mi

Top 77%
×8stories
+106ft-24ft

Overall

21741

Females

8830

F18-39

8830

21M→35K

21.0 - 21.8 mi

Top 73%
×7stories
+17ft-86ft

Overall

20641

Females

8323

F18-39

8323

35K→23M

21.8 - 23.0 mi

Top 68%
×5stories
+23ft-63ft

Overall

19248

Females

7648

F18-39

7648

23M→24M

23.0 - 24.0 mi

Top 68%
×6stories
+12ft-82ft

Overall

19192

Females

7653

F18-39

7653

24M→40K

24.0 - 24.9 mi

Top 68%
×1story
+6ft-20ft

Overall

19379

Females

7831

F18-39

7831

40K→25.2M

24.9 - 25.2 mi

Top 63%
×1story
+13ft-16ft

Overall

17779

Females

7031

F18-39

7031

25.2M→Finish

25.2 - 26.2 mi

Top 69%
×2stories
+22ft-21ft

Overall

19577

Females

7914

F18-39

7914

Passing Analysis

Category:
Athletes Passed
2801
Passed By
482
Net Change
+2319
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23855
5K → 10K61859+559#23855#23296
10K → 15K35560+295#23296#23001
15K → 20K36659+307#23001#22694
20K → Half3428+6#22694#22688
Half → 25K20766+141#22688#22547
25K → 30K28383+200#22547#22347
30K → 20M1599+150#22347#22197
20M → 21M11561+54#22197#22143
21M → 35K7510+65#22143#22078
35K → 23M20013+187#22078#21891
23M → 24M1166+110#21891#21781
24M → 40K9410+84#21781#21697
40K → 25.2M804+76#21697#21621
25.2M → Finish9914+85#21621#21536
TOTALS2801482+2319
📊

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