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BOSTON MARATHON 2025

Grace Alessi

Bib: 29944•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
25:40
Rank: #18490
Start → 5K
25:40 | 8:16/mi
10K· 6.21 mi
51:20
Rank: #18389 (+101)
5K → 10K
25:40 | 8:16/mi
15K· 9.32 mi
1:17:31
Rank: #18511 (-122)
10K → 15K
26:11 | 8:26/mi
20K· 12.43 mi
1:44:02
Rank: #18467 (+44)
15K → 20K
26:31 | 8:32/mi
Half· 13.11 mi
1:50:00
Rank: #18588 (-121)
20K → Half
5:58 | 8:45/mi
25K· 15.53 mi
2:12:36
Rank: #19135 (-547)
Half → 25K
22:36 | 9:19/mi
30K· 18.64 mi
2:43:04
Rank: #19583 (-448)
25K → 30K
30:28 | 9:48/mi
20M
2:55:30
Rank: #19438 (+145)
30K → 20M
12:26 | 9:09/mi
21M
3:05:49
Rank: #19426 (+12)
20M → 21M
10:19 | 10:19/mi
35K· 21.75 mi
3:12:30
Rank: #19382 (+44)
21M → 35K
6:41 | 8:56/mi
23M
3:24:15
Rank: #19309 (+73)
35K → 23M
11:45 | 9:23/mi
24M
3:33:17
Rank: #19234 (+75)
23M → 24M
9:02 | 9:02/mi
40K· 24.85 mi
3:41:46
Rank: #19279 (-45)
24M → 40K
8:29 | 9:55/mi
25.2M
3:45:29
Rank: #19279
40K → 25.2M
3:43 | 10:47/mi
Finish· 26.22 mi
3:53:53
Rank: #19113 (+166)
25.2M → Finish
8:24 | 8:15/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:50:00
Pace8:23 /mi
2nd Half
Distance13.11 mi
Time2:03:53
Pace9:27 /mi
📊Positive Split: 12.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:45:2425:408:1625:40
8:16
-
10K
6.21 mi12:11:0451:208:1625:40
8:16
0:00
15K
9.32 mi12:37:151:17:318:1926:11
8:26
+0:10
20K
12.43 mi13:03:461:44:028:2226:31
8:32
+0:06
Half
13.11 mi13:09:441:50:008:235:58
8:45
+0:13
25K
15.53 mi13:32:202:12:368:3222:36
9:19
+0:34
30K
18.64 mi14:02:482:43:048:4530:28
9:48
+0:29
20M
20.00 mi14:15:142:55:308:4612:26
9:09
-0:39
21M
21.00 mi14:25:333:05:498:5110:19
10:19
+1:10
35K
21.75 mi14:32:143:12:308:516:41
8:56
-1:23
23M
23.00 mi14:43:593:24:158:5311:45
9:23
+0:27
24M
24.00 mi14:53:013:33:178:539:02
9:02
-0:21
40K
24.85 mi15:01:303:41:468:558:29
9:55
+0:53
25.2M
25.20 mi15:05:133:45:298:573:43
10:47
+0:52
Finish
26.22 mi15:13:373:53:538:568:24
8:15
-2:32

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

8:15 /mi

Average Pace

8:56 /mi

Slowest Pace

10:47 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:52:26

48% of race

Time at Steady Pace

1:08:28

29% of race

Time at Slower Pace

52:59

23% of race

Average Pace: 8:55 /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 mi11:45:2425:408:1625:40
8:16
#18490
10K
6.21 mi12:11:0451:208:1625:40
8:16
#18389
15K
9.32 mi12:37:151:17:318:1926:11
8:26
#18511
20K
12.43 mi13:03:461:44:028:2226:31
8:32
#18467
Half
13.11 mi13:09:441:50:008:235:58
8:45
#18588
25K
15.53 mi13:32:202:12:368:3222:36
9:19
#19135
30K
18.64 mi14:02:482:43:048:4530:28
9:48
#19583
20M
20.00 mi14:15:142:55:308:4612:26
9:09
#19438
21M
21.00 mi14:25:333:05:498:5110:19
10:19
#19426
35K
21.75 mi14:32:143:12:308:516:41
8:56
#19382
23M
23.00 mi14:43:593:24:158:5311:45
9:23
#19309
24M
24.00 mi14:53:013:33:178:539:02
9:02
#19234
40K
24.85 mi15:01:303:41:468:558:29
9:55
#19279
25.2M
25.20 mi15:05:133:45:298:573:43
10:47
#19279
Finish
26.22 mi15:13:373:53:538:568:24
8:15
#19113
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi184906625662518884(Top 66%)6834(Top 56%)6834(Top 125%)
10K6.21 mi3.10 mi18389+1016552+736552+7318323(Top 65%)6502(Top 53%)6502(Top 119%)
15K9.32 mi3.11 mi18511-1226633-816633-8118884(Top 66%)6834(Top 56%)6834(Top 125%)
20K12.43 mi3.11 mi18467+446604+296604+2918482(Top 65%)6621(Top 54%)6621(Top 121%)
Half13.11 mi0.68 mi18588-1216670-666670-6620653(Top 73%)7838(Top 64%)7838(Top 143%)
25K15.53 mi2.42 mi19135-5476989-3196989-31921261(Top 75%)8237(Top 67%)8237(Top 151%)
30K18.64 mi3.11 mi19583-4487287-2987287-29821019(Top 74%)8237(Top 67%)8237(Top 151%)
20M20.00 mi1.36 mi19438+1457227+607227+6017560(Top 62%)6457(Top 53%)6457(Top 118%)
21M21.00 mi1.00 mi19426+127249-227249-2219435(Top 68%)7576(Top 62%)7576(Top 139%)
35K21.75 mi0.75 mi19382+447240+97240+917953(Top 63%)6879(Top 56%)6879(Top 126%)
23M23.00 mi1.25 mi19309+737226+147226+1418186(Top 64%)7076(Top 58%)7076(Top 129%)
24M24.00 mi1.00 mi19234+757205+217205+2117565(Top 62%)6801(Top 56%)6801(Top 124%)
40K24.85 mi0.85 mi19279-457251-467251-4620201(Top 71%)8252(Top 67%)8252(Top 151%)
25.2M25.20 mi0.35 mi192797263-127263-1219982(Top 70%)8143(Top 67%)8143(Top 149%)
Finish26.22 mi1.02 mi19113+1667190+737190+7314615(Top 51%)5283(Top 43%)5283(Top 97%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 66%
×21stories
+97ft-345ft

Overall

18884

Females

6834

F18-39

6834

5K→10K

3.1 - 6.2 mi

Top 65%
×5stories
+79ft-138ft

Overall

18323

Females

6502

F18-39

6502

10K→15K

6.2 - 9.3 mi

Top 66%
×3stories
+67ft-78ft

Overall

18884

Females

6834

F18-39

6834

15K→20K

9.3 - 12.4 mi

Top 65%
×5stories
+106ft-86ft

Overall

18482

Females

6621

F18-39

6621

20K→Half

12.4 - 13.1 mi

Top 73%
×2stories
+19ft-37ft

Overall

20653

Females

7838

F18-39

7838

Half→25K

13.1 - 15.5 mi

Top 75%
×4stories
+66ft-88ft

Overall

21261

Females

8237

F18-39

8237

25K→30K

15.5 - 18.6 mi

Top 74%
×9stories
+181ft-148ft

Overall

21019

Females

8237

F18-39

8237

30K→20M

18.6 - 20.0 mi

Top 62%
×5stories
+64ft-50ft

Overall

17560

Females

6457

F18-39

6457

20M→21M

20.0 - 21.0 mi

Top 68%
×8stories
+106ft-24ft

Overall

19435

Females

7576

F18-39

7576

21M→35K

21.0 - 21.8 mi

Top 63%
×7stories
+17ft-86ft

Overall

17953

Females

6879

F18-39

6879

35K→23M

21.8 - 23.0 mi

Top 64%
×5stories
+23ft-63ft

Overall

18186

Females

7076

F18-39

7076

23M→24M

23.0 - 24.0 mi

Top 62%
×6stories
+12ft-82ft

Overall

17565

Females

6801

F18-39

6801

24M→40K

24.0 - 24.9 mi

Top 71%
×1story
+6ft-20ft

Overall

20201

Females

8252

F18-39

8252

40K→25.2M

24.9 - 25.2 mi

Top 70%
×1story
+13ft-16ft

Overall

19982

Females

8143

F18-39

8143

25.2M→Finish

25.2 - 26.2 mi

Top 51%
×2stories
+22ft-21ft

Overall

14615

Females

5283

F18-39

5283

Passing Analysis

Category:
Athletes Passed
1676
Passed By
2299
Net Change
-623
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18490
5K → 10K306205+101#18490#18389
10K → 15K148270-122#18389#18511
15K → 20K208164+44#18511#18467
20K → Half9130-121#18467#18588
Half → 25K55602-547#18588#19135
25K → 30K106554-448#19135#19583
30K → 20M17934+145#19583#19438
20M → 21M10896+12#19438#19426
21M → 35K7228+44#19426#19382
35K → 23M12855+73#19382#19309
23M → 24M10227+75#19309#19234
24M → 40K4994-45#19234#19279
40K → 25.2M33330#19279#19279
25.2M → Finish1737+166#19279#19113
TOTALS16762299-623
📊

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