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BOSTON MARATHON 2025

Naomi Alter

Bib: 32194•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
27:39
Rank: #21998
Start → 5K
27:39 | 8:54/mi
10K· 6.21 mi
54:37
Rank: #21401 (+597)
5K → 10K
26:58 | 8:41/mi
15K· 9.32 mi
1:21:44
Rank: #21086 (+315)
10K → 15K
27:07 | 8:44/mi
20K· 12.43 mi
1:49:09
Rank: #20829 (+257)
15K → 20K
27:25 | 8:49/mi
Half· 13.11 mi
1:54:58
Rank: #20778 (+51)
20K → Half
5:49 | 8:32/mi
25K· 15.53 mi
2:17:06
Rank: #20744 (+34)
Half → 25K
22:08 | 9:08/mi
30K· 18.64 mi
2:46:44
Rank: #20597 (+147)
25K → 30K
29:38 | 9:32/mi
20M
3:00:00
Rank: #20558 (+39)
30K → 20M
13:16 | 9:46/mi
21M
3:09:39
Rank: #20338 (+220)
20M → 21M
9:39 | 9:39/mi
35K· 21.75 mi
3:17:31
Rank: #20507 (-169)
21M → 35K
7:52 | 10:31/mi
23M
3:30:07
Rank: #20530 (-23)
35K → 23M
12:36 | 10:04/mi
24M
3:40:09
Rank: #20603 (-73)
23M → 24M
10:02 | 10:02/mi
40K· 24.85 mi
3:48:53
Rank: #20658 (-55)
24M → 40K
8:44 | 10:13/mi
25.2M
3:52:27
Rank: #20629 (+29)
40K → 25.2M
3:34 | 10:21/mi
Finish· 26.22 mi
4:02:05
Rank: #20645 (-16)
25.2M → Finish
9:38 | 9:27/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:54:58
Pace8:46 /mi
2nd Half
Distance13.11 mi
Time2:07:07
Pace9:42 /mi
📊Positive Split: 10.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:52:2127:398:5427:39
8:54
-
10K
6.21 mi12:19:1954:378:4726:58
8:41
-0:13
15K
9.32 mi12:46:261:21:448:4627:07
8:44
+0:03
20K
12.43 mi13:13:511:49:098:4727:25
8:49
+0:05
Half
13.11 mi13:19:401:54:588:465:49
8:32
-0:17
25K
15.53 mi13:41:482:17:068:5022:08
9:08
+0:36
30K
18.64 mi14:11:262:46:448:5729:38
9:32
+0:24
20M
20.00 mi14:24:423:00:009:0013:16
9:46
+0:14
21M
21.00 mi14:34:213:09:399:029:39
9:39
-0:07
35K
21.75 mi14:42:133:17:319:057:52
10:31
+0:52
23M
23.00 mi14:54:493:30:079:0812:36
10:04
-0:27
24M
24.00 mi15:04:513:40:099:1010:02
10:02
-0:02
40K
24.85 mi15:13:353:48:539:138:44
10:13
+0:11
25.2M
25.20 mi15:17:093:52:279:133:34
10:21
+0:08
Finish
26.22 mi15:26:474:02:059:149:38
9:27
-0:54

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

8:32 /mi

Average Pace

9:14 /mi

Slowest Pace

10:31 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:17:06

57% of race

Time at Steady Pace

1:02:11

26% of race

Time at Slower Pace

42:48

18% of race

Average Pace: 9:14 /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 mi11:52:2127:398:5427:39
8:54
#21998
10K
6.21 mi12:19:1954:378:4726:58
8:41
#21401
15K
9.32 mi12:46:261:21:448:4627:07
8:44
#21086
20K
12.43 mi13:13:511:49:098:4727:25
8:49
#20829
Half
13.11 mi13:19:401:54:588:465:49
8:32
#20778
25K
15.53 mi13:41:482:17:068:5022:08
9:08
#20744
30K
18.64 mi14:11:262:46:448:5729:38
9:32
#20597
20M
20.00 mi14:24:423:00:009:0013:16
9:46
#20558
21M
21.00 mi14:34:213:09:399:029:39
9:39
#20338
35K
21.75 mi14:42:133:17:319:057:52
10:31
#20507
23M
23.00 mi14:54:493:30:079:0812:36
10:04
#20530
24M
24.00 mi15:04:513:40:099:1010:02
10:02
#20603
40K
24.85 mi15:13:353:48:539:138:44
10:13
#20658
25.2M
25.20 mi15:17:093:52:279:133:34
10:21
#20629
Finish
26.22 mi15:26:474:02:059:149:38
9:27
#20645
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi219988620862020655(Top 73%)7810(Top 64%)7810(Top 143%)
10K6.21 mi3.10 mi21401+5978271+3498271+34920769(Top 73%)7901(Top 65%)7901(Top 144%)
15K9.32 mi3.11 mi21086+3158083+1888083+18820655(Top 73%)7810(Top 64%)7810(Top 143%)
20K12.43 mi3.11 mi20829+2577942+1417942+14120085(Top 71%)7528(Top 62%)7528(Top 138%)
Half13.11 mi0.68 mi20778+517917+257917+2519444(Top 68%)7165(Top 59%)7165(Top 131%)
25K15.53 mi2.42 mi20744+347899+187899+1820494(Top 72%)7808(Top 64%)7808(Top 143%)
30K18.64 mi3.11 mi20597+1477866+337866+3320100(Top 71%)7713(Top 63%)7713(Top 141%)
20M20.00 mi1.36 mi20558+397861+57861+520179(Top 71%)7899(Top 65%)7899(Top 144%)
21M21.00 mi1.00 mi20338+2207769+927769+9216827(Top 59%)6176(Top 51%)6176(Top 113%)
35K21.75 mi0.75 mi20507-1697871-1027871-10223217(Top 82%)9657(Top 79%)9657(Top 177%)
23M23.00 mi1.25 mi20530-237904-337904-3320697(Top 73%)8403(Top 69%)8403(Top 154%)
24M24.00 mi1.00 mi20603-737963-597963-5921474(Top 76%)8841(Top 72%)8841(Top 162%)
40K24.85 mi0.85 mi20658-558008-458008-4521125(Top 74%)8725(Top 71%)8725(Top 160%)
25.2M25.20 mi0.35 mi20629+298001+78001+718505(Top 65%)7394(Top 60%)7394(Top 135%)
Finish26.22 mi1.02 mi20645-168026-258026-2521030(Top 74%)8672(Top 71%)8672(Top 159%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 73%
×21stories
+97ft-345ft

Overall

20655

Females

7810

F18-39

7810

5K→10K

3.1 - 6.2 mi

Top 73%
×5stories
+79ft-138ft

Overall

20769

Females

7901

F18-39

7901

10K→15K

6.2 - 9.3 mi

Top 73%
×3stories
+67ft-78ft

Overall

20655

Females

7810

F18-39

7810

15K→20K

9.3 - 12.4 mi

Top 71%
×5stories
+106ft-86ft

Overall

20085

Females

7528

F18-39

7528

20K→Half

12.4 - 13.1 mi

Top 68%
×2stories
+19ft-37ft

Overall

19444

Females

7165

F18-39

7165

Half→25K

13.1 - 15.5 mi

Top 72%
×4stories
+66ft-88ft

Overall

20494

Females

7808

F18-39

7808

25K→30K

15.5 - 18.6 mi

Top 71%
×9stories
+181ft-148ft

Overall

20100

Females

7713

F18-39

7713

30K→20M

18.6 - 20.0 mi

Top 71%
×5stories
+64ft-50ft

Overall

20179

Females

7899

F18-39

7899

20M→21M

20.0 - 21.0 mi

Top 59%
×8stories
+106ft-24ft

Overall

16827

Females

6176

F18-39

6176

21M→35K

21.0 - 21.8 mi

Top 82%
×7stories
+17ft-86ft

Overall

23217

Females

9657

F18-39

9657

35K→23M

21.8 - 23.0 mi

Top 73%
×5stories
+23ft-63ft

Overall

20697

Females

8403

F18-39

8403

23M→24M

23.0 - 24.0 mi

Top 76%
×6stories
+12ft-82ft

Overall

21474

Females

8841

F18-39

8841

24M→40K

24.0 - 24.9 mi

Top 74%
×1story
+6ft-20ft

Overall

21125

Females

8725

F18-39

8725

40K→25.2M

24.9 - 25.2 mi

Top 65%
×1story
+13ft-16ft

Overall

18505

Females

7394

F18-39

7394

25.2M→Finish

25.2 - 26.2 mi

Top 74%
×2stories
+22ft-21ft

Overall

21030

Females

8672

F18-39

8672

Passing Analysis

Category:
Athletes Passed
2483
Passed By
1130
Net Change
+1353
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21998
5K → 10K66972+597#21998#21401
10K → 15K38671+315#21401#21086
15K → 20K32467+257#21086#20829
20K → Half565+51#20829#20778
Half → 25K173139+34#20778#20744
25K → 30K286139+147#20744#20597
30K → 20M11273+39#20597#20558
20M → 21M2299+220#20558#20338
21M → 35K23192-169#20338#20507
35K → 23M82105-23#20507#20530
23M → 24M38111-73#20530#20603
24M → 40K3590-55#20603#20658
40K → 25.2M323+29#20658#20629
25.2M → Finish3854-16#20629#20645
TOTALS24831130+1353
📊

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