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BOSTON MARATHON 2025

Anna Grodzki

Bib: 22752•F

NY

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Top 47%
Division (F45-49)
#0 / 1813
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:03
Rank: #19216
Start → 5K
26:03 | 8:23/mi
10K· 6.21 mi
52:03
Rank: #19107 (+109)
5K → 10K
26:00 | 8:22/mi
15K· 9.32 mi
1:18:20
Rank: #19052 (+55)
10K → 15K
26:17 | 8:28/mi
20K· 12.43 mi
1:44:44
Rank: #18817 (+235)
15K → 20K
26:24 | 8:30/mi
Half· 13.11 mi
1:50:26
Rank: #18802 (+15)
20K → Half
5:42 | 8:21/mi
25K· 15.53 mi
2:12:50
Rank: #19206 (-404)
Half → 25K
22:24 | 9:14/mi
30K· 18.64 mi
2:41:01
Rank: #18971 (+235)
25K → 30K
28:11 | 9:04/mi
20M
2:53:29
Rank: #18876 (+95)
30K → 20M
12:28 | 9:10/mi
21M
3:03:16
Rank: #18770 (+106)
20M → 21M
9:47 | 9:47/mi
35K· 21.75 mi
3:09:46
Rank: #18688 (+82)
21M → 35K
6:30 | 8:41/mi
23M
3:21:03
Rank: #18531 (+157)
35K → 23M
11:17 | 9:01/mi
24M
3:29:58
Rank: #18449 (+82)
23M → 24M
8:55 | 8:55/mi
40K· 24.85 mi
3:37:52
Rank: #18406 (+43)
24M → 40K
7:54 | 9:14/mi
25.2M
3:41:27
Rank: #18411 (-5)
40K → 25.2M
3:35 | 10:23/mi
Finish· 26.22 mi
3:50:47
Rank: #18499 (-88)
25.2M → Finish
9:20 | 9:10/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:50:26
Pace8:25 /mi
2nd Half
Distance13.11 mi
Time2:00:21
Pace9:11 /mi
📊Positive Split: 9.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:23:3626:038:2326:03
8:23
-
10K
6.21 mi11:49:3652:038:2326:00
8:22
-0:01
15K
9.32 mi12:15:531:18:208:2426:17
8:28
+0:06
20K
12.43 mi12:42:171:44:448:2626:24
8:30
+0:02
Half
13.11 mi12:47:591:50:268:255:42
8:21
-0:09
25K
15.53 mi13:10:232:12:508:3322:24
9:14
+0:53
30K
18.64 mi13:38:342:41:018:3828:11
9:04
-0:10
20M
20.00 mi13:51:022:53:298:4012:28
9:10
+0:06
21M
21.00 mi14:00:493:03:168:449:47
9:47
+0:37
35K
21.75 mi14:07:193:09:468:446:30
8:41
-1:06
23M
23.00 mi14:18:363:21:038:4411:17
9:01
+0:20
24M
24.00 mi14:27:313:29:588:458:55
8:55
-0:06
40K
24.85 mi14:35:253:37:528:467:54
9:14
+0:19
25.2M
25.20 mi14:39:003:41:278:473:35
10:23
+1:09
Finish
26.22 mi14:48:203:50:478:499:20
9:10
-1:13

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

8:21 /mi

Average Pace

8:49 /mi

Slowest Pace

10:23 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:56:56

51% of race

Time at Steady Pace

1:40:29

44% of race

Time at Slower Pace

13:22

6% of race

Average Pace: 8:48 /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 mi11:23:3626:038:2326:03
8:23
#19216
10K
6.21 mi11:49:3652:038:2326:00
8:22
#19107
15K
9.32 mi12:15:531:18:208:2426:17
8:28
#19052
20K
12.43 mi12:42:171:44:448:2626:24
8:30
#18817
Half
13.11 mi12:47:591:50:268:255:42
8:21
#18802
25K
15.53 mi13:10:232:12:508:3322:24
9:14
#19206
30K
18.64 mi13:38:342:41:018:3828:11
9:04
#18971
20M
20.00 mi13:51:022:53:298:4012:28
9:10
#18876
21M
21.00 mi14:00:493:03:168:449:47
9:47
#18770
35K
21.75 mi14:07:193:09:468:446:30
8:41
#18688
23M
23.00 mi14:18:363:21:038:4411:17
9:01
#18531
24M
24.00 mi14:27:313:29:588:458:55
8:55
#18449
40K
24.85 mi14:35:253:37:528:467:54
9:14
#18406
25.2M
25.20 mi14:39:003:41:278:473:35
10:23
#18411
Finish
26.22 mi14:48:203:50:478:499:20
9:10
#18499
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi192167029702919104(Top 67%)6960(Top 57%)6960(Top 384%)
10K6.21 mi3.10 mi19107+1096962+676962+6719007(Top 67%)6888(Top 56%)6888(Top 380%)
15K9.32 mi3.11 mi19052+556941+216941+2119104(Top 67%)6960(Top 57%)6960(Top 384%)
20K12.43 mi3.11 mi18817+2356801+1406801+14018237(Top 64%)6472(Top 53%)6472(Top 357%)
Half13.11 mi0.68 mi18802+156795+66795+618378(Top 65%)6555(Top 54%)6555(Top 362%)
25K15.53 mi2.42 mi19206-4047031-2367031-23620930(Top 74%)8058(Top 66%)8058(Top 444%)
30K18.64 mi3.11 mi18971+2356932+996932+9918045(Top 64%)6600(Top 54%)6600(Top 364%)
20M20.00 mi1.36 mi18876+956903+296903+2917675(Top 62%)6519(Top 53%)6519(Top 360%)
21M21.00 mi1.00 mi18770+1066874+296874+2917428(Top 61%)6498(Top 53%)6498(Top 358%)
35K21.75 mi0.75 mi18688+826842+326842+3216664(Top 59%)6160(Top 50%)6160(Top 340%)
23M23.00 mi1.25 mi18531+1576785+576785+5716361(Top 58%)6098(Top 50%)6098(Top 336%)
24M24.00 mi1.00 mi18449+826767+186767+1816957(Top 60%)6481(Top 53%)6481(Top 357%)
40K24.85 mi0.85 mi18406+436772-56772-517564(Top 62%)6897(Top 56%)6897(Top 380%)
25.2M25.20 mi0.35 mi18411-56781-96781-918639(Top 66%)7450(Top 61%)7450(Top 411%)
Finish26.22 mi1.02 mi18499-886853-726853-7219791(Top 70%)8030(Top 66%)8030(Top 443%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 67%
×21stories
+97ft-345ft

Overall

19104

Females

6960

F45-49

6960

5K→10K

3.1 - 6.2 mi

Top 67%
×5stories
+79ft-138ft

Overall

19007

Females

6888

F45-49

6888

10K→15K

6.2 - 9.3 mi

Top 67%
×3stories
+67ft-78ft

Overall

19104

Females

6960

F45-49

6960

15K→20K

9.3 - 12.4 mi

Top 64%
×5stories
+106ft-86ft

Overall

18237

Females

6472

F45-49

6472

20K→Half

12.4 - 13.1 mi

Top 65%
×2stories
+19ft-37ft

Overall

18378

Females

6555

F45-49

6555

Half→25K

13.1 - 15.5 mi

Top 74%
×4stories
+66ft-88ft

Overall

20930

Females

8058

F45-49

8058

25K→30K

15.5 - 18.6 mi

Top 64%
×9stories
+181ft-148ft

Overall

18045

Females

6600

F45-49

6600

30K→20M

18.6 - 20.0 mi

Top 62%
×5stories
+64ft-50ft

Overall

17675

Females

6519

F45-49

6519

20M→21M

20.0 - 21.0 mi

Top 61%
×8stories
+106ft-24ft

Overall

17428

Females

6498

F45-49

6498

21M→35K

21.0 - 21.8 mi

Top 59%
×7stories
+17ft-86ft

Overall

16664

Females

6160

F45-49

6160

35K→23M

21.8 - 23.0 mi

Top 58%
×5stories
+23ft-63ft

Overall

16361

Females

6098

F45-49

6098

23M→24M

23.0 - 24.0 mi

Top 60%
×6stories
+12ft-82ft

Overall

16957

Females

6481

F45-49

6481

24M→40K

24.0 - 24.9 mi

Top 62%
×1story
+6ft-20ft

Overall

17564

Females

6897

F45-49

6897

40K→25.2M

24.9 - 25.2 mi

Top 66%
×1story
+13ft-16ft

Overall

18639

Females

7450

F45-49

7450

25.2M→Finish

25.2 - 26.2 mi

Top 70%
×2stories
+22ft-21ft

Overall

19791

Females

8030

F45-49

8030

Passing Analysis

Category:
Athletes Passed
2166
Passed By
1449
Net Change
+717
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19216
5K → 10K309200+109#19216#19107
10K → 15K222167+55#19107#19052
15K → 20K31883+235#19052#18817
20K → Half4126+15#18817#18802
Half → 25K77481-404#18802#19206
25K → 30K33297+235#19206#18971
30K → 20M16166+95#18971#18876
20M → 21M16054+106#18876#18770
21M → 35K9210+82#18770#18688
35K → 23M18326+157#18688#18531
23M → 24M12341+82#18531#18449
24M → 40K8744+43#18449#18406
40K → 25.2M2328-5#18406#18411
25.2M → Finish38126-88#18411#18499
TOTALS21661449+717
📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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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