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BOSTON MARATHON 2025

Anna Nachbar

Bib: 29282•F

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
33:32
Rank: #27267
Start → 5K
33:32 | 10:48/mi
10K· 6.21 mi
1:07:55
Rank: #27230 (+37)
5K → 10K
34:23 | 11:04/mi
15K· 9.32 mi
1:42:06
Rank: #27004 (+226)
10K → 15K
34:11 | 11:00/mi
20K· 12.43 mi
2:16:47
Rank: #26781 (+223)
15K → 20K
34:41 | 11:10/mi
Half· 13.11 mi
2:24:09
Rank: #26758 (+23)
20K → Half
7:22 | 10:48/mi
25K· 15.53 mi
2:51:37
Rank: #26561 (+197)
Half → 25K
27:28 | 11:20/mi
30K· 18.64 mi
3:28:31
Rank: #26362 (+199)
25K → 30K
36:54 | 11:53/mi
20M
3:44:35
Rank: #26256 (+106)
30K → 20M
16:04 | 11:49/mi
21M
3:57:26
Rank: #26204 (+52)
20M → 21M
12:51 | 12:51/mi
35K· 21.75 mi
4:05:42
Rank: #26148 (+56)
21M → 35K
8:16 | 11:03/mi
23M
4:20:33
Rank: #26093 (+55)
35K → 23M
14:51 | 11:52/mi
24M
4:31:50
Rank: #26041 (+52)
23M → 24M
11:17 | 11:17/mi
40K· 24.85 mi
4:41:38
Rank: #25999 (+42)
24M → 40K
9:48 | 11:28/mi
25.2M
4:45:47
Rank: #25973 (+26)
40K → 25.2M
4:09 | 12:02/mi
Finish· 26.22 mi
4:56:05
Rank: #25917 (+56)
25.2M → Finish
10:18 | 10:06/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:24:09
Pace11:00 /mi
2nd Half
Distance13.11 mi
Time2:31:56
Pace11:35 /mi
📊Positive Split: 5.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:52:5333:3210:4833:32
10:48
-
10K
6.21 mi12:27:161:07:5510:5634:23
11:04
+0:16
15K
9.32 mi13:01:271:42:0610:5734:11
11:00
-0:04
20K
12.43 mi13:36:082:16:4711:0034:41
11:10
+0:10
Half
13.11 mi13:43:302:24:0911:007:22
10:48
-0:22
25K
15.53 mi14:10:582:51:3711:0327:28
11:20
+0:32
30K
18.64 mi14:47:523:28:3111:1136:54
11:53
+0:33
20M
20.00 mi15:03:563:44:3511:1416:04
11:49
-0:04
21M
21.00 mi15:16:473:57:2611:1812:51
12:51
+1:02
35K
21.75 mi15:25:034:05:4211:188:16
11:03
-1:48
23M
23.00 mi15:39:544:20:3311:2014:51
11:52
+0:49
24M
24.00 mi15:51:114:31:5011:2011:17
11:17
-0:35
40K
24.85 mi16:00:594:41:3811:209:48
11:28
+0:11
25.2M
25.20 mi16:05:084:45:4711:204:09
12:02
+0:34
Finish
26.22 mi16:15:264:56:0511:1810:18
10:06
-1:56

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

10:06 /mi

Average Pace

11:18 /mi

Slowest Pace

12:51 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

51:12

17% of race

Time at Steady Pace

2:40:04

54% of race

Time at Slower Pace

1:24:49

29% of race

Average Pace: 11:18 /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 mi11:52:5333:3210:4833:32
10:48
#27267
10K
6.21 mi12:27:161:07:5510:5634:23
11:04
#27230
15K
9.32 mi13:01:271:42:0610:5734:11
11:00
#27004
20K
12.43 mi13:36:082:16:4711:0034:41
11:10
#26781
Half
13.11 mi13:43:302:24:0911:007:22
10:48
#26758
25K
15.53 mi14:10:582:51:3711:0327:28
11:20
#26561
30K
18.64 mi14:47:523:28:3111:1136:54
11:53
#26362
20M
20.00 mi15:03:563:44:3511:1416:04
11:49
#26256
21M
21.00 mi15:16:473:57:2611:1812:51
12:51
#26204
35K
21.75 mi15:25:034:05:4211:188:16
11:03
#26148
23M
23.00 mi15:39:544:20:3311:2014:51
11:52
#26093
24M
24.00 mi15:51:114:31:5011:2011:17
11:17
#26041
40K
24.85 mi16:00:594:41:3811:209:48
11:28
#25999
25.2M
25.20 mi16:05:084:45:4711:204:09
12:02
#25973
Finish
26.22 mi16:15:264:56:0511:1810:18
10:06
#25917
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi27267114871148726672(Top 94%)11173(Top 91%)11173(Top 204%)
10K6.21 mi3.10 mi27230+3711492-511492-527146(Top 96%)11447(Top 94%)11447(Top 209%)
15K9.32 mi3.11 mi27004+22611361+13111361+13126672(Top 94%)11173(Top 91%)11173(Top 204%)
20K12.43 mi3.11 mi26781+22311230+13111230+13126244(Top 92%)10937(Top 89%)10937(Top 200%)
Half13.11 mi0.68 mi26758+2311218+1211218+1226223(Top 92%)10953(Top 90%)10953(Top 200%)
25K15.53 mi2.42 mi26561+19711113+10511113+10525648(Top 90%)10663(Top 87%)10663(Top 195%)
30K18.64 mi3.11 mi26362+19911018+9511018+9525421(Top 89%)10628(Top 87%)10628(Top 194%)
20M20.00 mi1.36 mi26256+10610979+3910979+3925006(Top 88%)10476(Top 86%)10476(Top 192%)
21M21.00 mi1.00 mi26204+5210962+1710962+1724852(Top 87%)10494(Top 86%)10494(Top 192%)
35K21.75 mi0.75 mi26148+5610936+2610936+2624291(Top 86%)10219(Top 84%)10219(Top 187%)
23M23.00 mi1.25 mi26093+5510918+1810918+1824875(Top 88%)10536(Top 86%)10536(Top 193%)
24M24.00 mi1.00 mi26041+5210894+2410894+2424518(Top 86%)10397(Top 85%)10397(Top 190%)
40K24.85 mi0.85 mi25999+4210874+2010874+2024050(Top 85%)10194(Top 83%)10194(Top 186%)
25.2M25.20 mi0.35 mi25973+2610868+610868+623247(Top 82%)9797(Top 80%)9797(Top 179%)
Finish26.22 mi1.02 mi25917+5610848+2010848+2023213(Top 82%)9779(Top 80%)9779(Top 179%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 94%
×21stories
+97ft-345ft

Overall

26672

Females

11173

F18-39

11173

5K→10K

3.1 - 6.2 mi

Top 96%
×5stories
+79ft-138ft

Overall

27146

Females

11447

F18-39

11447

10K→15K

6.2 - 9.3 mi

Top 94%
×3stories
+67ft-78ft

Overall

26672

Females

11173

F18-39

11173

15K→20K

9.3 - 12.4 mi

Top 92%
×5stories
+106ft-86ft

Overall

26244

Females

10937

F18-39

10937

20K→Half

12.4 - 13.1 mi

Top 92%
×2stories
+19ft-37ft

Overall

26223

Females

10953

F18-39

10953

Half→25K

13.1 - 15.5 mi

Top 90%
×4stories
+66ft-88ft

Overall

25648

Females

10663

F18-39

10663

25K→30K

15.5 - 18.6 mi

Top 89%
×9stories
+181ft-148ft

Overall

25421

Females

10628

F18-39

10628

30K→20M

18.6 - 20.0 mi

Top 88%
×5stories
+64ft-50ft

Overall

25006

Females

10476

F18-39

10476

20M→21M

20.0 - 21.0 mi

Top 87%
×8stories
+106ft-24ft

Overall

24852

Females

10494

F18-39

10494

21M→35K

21.0 - 21.8 mi

Top 86%
×7stories
+17ft-86ft

Overall

24291

Females

10219

F18-39

10219

35K→23M

21.8 - 23.0 mi

Top 88%
×5stories
+23ft-63ft

Overall

24875

Females

10536

F18-39

10536

23M→24M

23.0 - 24.0 mi

Top 86%
×6stories
+12ft-82ft

Overall

24518

Females

10397

F18-39

10397

24M→40K

24.0 - 24.9 mi

Top 85%
×1story
+6ft-20ft

Overall

24050

Females

10194

F18-39

10194

40K→25.2M

24.9 - 25.2 mi

Top 82%
×1story
+13ft-16ft

Overall

23247

Females

9797

F18-39

9797

25.2M→Finish

25.2 - 26.2 mi

Top 82%
×2stories
+22ft-21ft

Overall

23213

Females

9779

F18-39

9779

Passing Analysis

Category:
Athletes Passed
1620
Passed By
270
Net Change
+1350
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#27267
5K → 10K161124+37#27267#27230
10K → 15K24216+226#27230#27004
15K → 20K23714+223#27004#26781
20K → Half296+23#26781#26758
Half → 25K21417+197#26758#26561
25K → 30K21718+199#26561#26362
30K → 20M1148+106#26362#26256
20M → 21M7422+52#26256#26204
21M → 35K648+56#26204#26148
35K → 23M7318+55#26148#26093
23M → 24M575+52#26093#26041
24M → 40K475+42#26041#25999
40K → 25.2M282+26#25999#25973
25.2M → Finish637+56#25973#25917
TOTALS1620270+1350
📊

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