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BOSTON MARATHON 2025

Grace Grimaldi

Bib: 17073•F

IL

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 39%
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
21:54
Rank: #8232
Start → 5K
21:54 | 7:03/mi
10K· 6.21 mi
43:56
Rank: #8440 (-208)
5K → 10K
22:02 | 7:06/mi
15K· 9.32 mi
1:06:12
Rank: #8503 (-63)
10K → 15K
22:16 | 7:10/mi
20K· 12.43 mi
1:28:35
Rank: #8366 (+137)
15K → 20K
22:23 | 7:12/mi
Half· 13.11 mi
1:33:31
Rank: #8416 (-50)
20K → Half
4:56 | 7:14/mi
25K· 15.53 mi
1:52:23
Rank: #8987 (-571)
Half → 25K
18:52 | 7:47/mi
30K· 18.64 mi
2:19:41
Rank: #10522 (-1535)
25K → 30K
27:18 | 8:47/mi
20M
2:32:39
Rank: #11352 (-830)
30K → 20M
12:58 | 9:33/mi
21M
2:42:38
Rank: #11853 (-501)
20M → 21M
9:59 | 9:59/mi
35K· 21.75 mi
2:49:50
Rank: #12295 (-442)
21M → 35K
7:12 | 9:37/mi
23M
3:03:32
Rank: #13371 (-1076)
35K → 23M
13:42 | 10:57/mi
24M
3:14:40
Rank: #14284 (-913)
23M → 24M
11:08 | 11:08/mi
40K· 24.85 mi
3:23:34
Rank: #14669 (-385)
24M → 40K
8:54 | 10:25/mi
25.2M
3:27:05
Rank: #14732 (-63)
40K → 25.2M
3:31 | 10:12/mi
Finish· 26.22 mi
3:35:52
Rank: #14791 (-59)
25.2M → Finish
8:47 | 8:37/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:33:31
Pace7:08 /mi
2nd Half
Distance13.11 mi
Time2:02:21
Pace9:20 /mi
📊Positive Split: 30.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:11:5821:547:0321:54
7:03
-
10K
6.21 mi11:34:0043:567:0422:02
7:06
+0:03
15K
9.32 mi11:56:161:06:127:0622:16
7:10
+0:04
20K
12.43 mi12:18:391:28:357:0822:23
7:12
+0:02
Half
13.11 mi12:23:351:33:317:084:56
7:14
+0:02
25K
15.53 mi12:42:271:52:237:1418:52
7:47
+0:33
30K
18.64 mi13:09:452:19:417:3027:18
8:47
+1:00
20M
20.00 mi13:22:432:32:397:3812:58
9:33
+0:46
21M
21.00 mi13:32:422:42:387:459:59
9:59
+0:26
35K
21.75 mi13:39:542:49:507:497:12
9:37
-0:22
23M
23.00 mi13:53:363:03:327:5913:42
10:57
+1:20
24M
24.00 mi14:04:443:14:408:0711:08
11:08
+0:11
40K
24.85 mi14:13:383:23:348:118:54
10:25
-0:43
25.2M
25.20 mi14:17:093:27:058:133:31
10:12
-0:13
Finish
26.22 mi14:25:563:35:528:148:47
8:37
-1:35

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

7:03 /mi

Average Pace

8:14 /mi

Slowest Pace

11:08 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:52:23

52% of race

Time at Steady Pace

36:05

17% of race

Time at Slower Pace

1:07:24

31% of race

Average Pace: 8:14 /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 mi11:11:5821:547:0321:54
7:03
#8232
10K
6.21 mi11:34:0043:567:0422:02
7:06
#8440
15K
9.32 mi11:56:161:06:127:0622:16
7:10
#8503
20K
12.43 mi12:18:391:28:357:0822:23
7:12
#8366
Half
13.11 mi12:23:351:33:317:084:56
7:14
#8416
25K
15.53 mi12:42:271:52:237:1418:52
7:47
#8987
30K
18.64 mi13:09:452:19:417:3027:18
8:47
#10522
20M
20.00 mi13:22:432:32:397:3812:58
9:33
#11352
21M
21.00 mi13:32:422:42:387:459:59
9:59
#11853
35K
21.75 mi13:39:542:49:507:497:12
9:37
#12295
23M
23.00 mi13:53:363:03:327:5913:42
10:57
#13371
24M
24.00 mi14:04:443:14:408:0711:08
11:08
#14284
40K
24.85 mi14:13:383:23:348:118:54
10:25
#14669
25.2M
25.20 mi14:17:093:27:058:133:31
10:12
#14732
Finish
26.22 mi14:25:563:35:528:148:47
8:37
#14791
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi8232107410748862(Top 31%)1374(Top 11%)1374(Top 25%)
10K6.21 mi3.10 mi8440-2081158-841158-848635(Top 30%)1237(Top 10%)1237(Top 23%)
15K9.32 mi3.11 mi8503-631194-361194-368862(Top 31%)1374(Top 11%)1374(Top 25%)
20K12.43 mi3.11 mi8366+1371173+211173+218267(Top 29%)1222(Top 10%)1222(Top 22%)
Half13.11 mi0.68 mi8416-501195-221195-229493(Top 33%)1736(Top 14%)1736(Top 32%)
25K15.53 mi2.42 mi8987-5711443-2481443-24812220(Top 43%)3241(Top 27%)3241(Top 59%)
30K18.64 mi3.11 mi10522-15352218-7752218-77516518(Top 58%)5746(Top 47%)5746(Top 105%)
20M20.00 mi1.36 mi11352-8302697-4792697-47919357(Top 68%)7447(Top 61%)7447(Top 136%)
21M21.00 mi1.00 mi11853-5012998-3012998-30118241(Top 64%)6912(Top 57%)6912(Top 126%)
35K21.75 mi0.75 mi12295-4423260-2623260-26220772(Top 73%)8373(Top 68%)8373(Top 153%)
23M23.00 mi1.25 mi13371-10763880-6203880-62023091(Top 81%)9647(Top 79%)9647(Top 176%)
24M24.00 mi1.00 mi14284-9134403-5234403-52324263(Top 85%)10248(Top 84%)10248(Top 187%)
40K24.85 mi0.85 mi14669-3854640-2374640-23721669(Top 76%)9019(Top 74%)9019(Top 165%)
25.2M25.20 mi0.35 mi14732-634688-484688-4817881(Top 63%)7059(Top 58%)7059(Top 129%)
Finish26.22 mi1.02 mi14791-594753-654753-6516967(Top 60%)6535(Top 53%)6535(Top 119%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 31%
×21stories
+97ft-345ft

Overall

8862

Females

1374

F18-39

1374

5K→10K

3.1 - 6.2 mi

Top 30%
×5stories
+79ft-138ft

Overall

8635

Females

1237

F18-39

1237

10K→15K

6.2 - 9.3 mi

Top 31%
×3stories
+67ft-78ft

Overall

8862

Females

1374

F18-39

1374

15K→20K

9.3 - 12.4 mi

Top 29%
×5stories
+106ft-86ft

Overall

8267

Females

1222

F18-39

1222

20K→Half

12.4 - 13.1 mi

Top 33%
×2stories
+19ft-37ft

Overall

9493

Females

1736

F18-39

1736

Half→25K

13.1 - 15.5 mi

Top 43%
×4stories
+66ft-88ft

Overall

12220

Females

3241

F18-39

3241

25K→30K

15.5 - 18.6 mi

Top 58%
×9stories
+181ft-148ft

Overall

16518

Females

5746

F18-39

5746

30K→20M

18.6 - 20.0 mi

Top 68%
×5stories
+64ft-50ft

Overall

19357

Females

7447

F18-39

7447

20M→21M

20.0 - 21.0 mi

Top 64%
×8stories
+106ft-24ft

Overall

18241

Females

6912

F18-39

6912

21M→35K

21.0 - 21.8 mi

Top 73%
×7stories
+17ft-86ft

Overall

20772

Females

8373

F18-39

8373

35K→23M

21.8 - 23.0 mi

Top 81%
×5stories
+23ft-63ft

Overall

23091

Females

9647

F18-39

9647

23M→24M

23.0 - 24.0 mi

Top 85%
×6stories
+12ft-82ft

Overall

24263

Females

10248

F18-39

10248

24M→40K

24.0 - 24.9 mi

Top 76%
×1story
+6ft-20ft

Overall

21669

Females

9019

F18-39

9019

40K→25.2M

24.9 - 25.2 mi

Top 63%
×1story
+13ft-16ft

Overall

17881

Females

7059

F18-39

7059

25.2M→Finish

25.2 - 26.2 mi

Top 60%
×2stories
+22ft-21ft

Overall

16967

Females

6535

F18-39

6535

Passing Analysis

Category:
Athletes Passed
755
Passed By
7312
Net Change
-6559
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8232
5K → 10K127335-208#8232#8440
10K → 15K138201-63#8440#8503
15K → 20K23497+137#8503#8366
20K → Half1262-50#8366#8416
Half → 25K50621-571#8416#8987
25K → 30K281561-1535#8987#10522
30K → 20M22852-830#10522#11352
20M → 21M15516-501#11352#11853
21M → 35K13455-442#11853#12295
35K → 23M101086-1076#12295#13371
23M → 24M8921-913#13371#14284
24M → 40K20405-385#14284#14669
40K → 25.2M2184-63#14669#14732
25.2M → Finish57116-59#14732#14791
TOTALS7557312-6559
📊

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