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BOSTON MARATHON 2025

Anna Althaus

Bib: 31580•F

ME

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

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
8:53/mi
27:36
↑ 97↓ 3451.5%
10K· 6.21 mi
8:47/mi
54:52
↑ 79↓ 1380.4%
15K· 9.32 mi
8:41/mi
1:21:50
↑ 67↓ 78
20K· 12.43 mi
8:44/mi
1:48:57
↑ 106↓ 860.1%
Half· 13.11 mi
8:36/mi
1:54:49
↑ 19↓ 370.5%
25K· 15.53 mi
8:45/mi
2:16:01
↑ 66↓ 880.2%
30K· 18.64 mi
9:05/mi
2:44:13
↑ 181↓ 1480.2%
20M
9:13/mi
2:56:44
↑ 64↓ 500.2%
21M
9:46/mi
3:06:30
↑ 106↓ 241.6%
35K· 21.75 mi
8:36/mi
3:12:56
↑ 17↓ 861.7%
23M
9:06/mi
3:24:20
↑ 23↓ 630.6%
24M
9:05/mi
3:33:25
↓ 821.3%
40K· 24.85 mi
9:09/mi
3:41:14
↓ 200.3%
25.2M
9:28/mi
3:44:30
↑ 13↓ 160.2%
Finish· 26.22 mi
8:18/mi
3:52:57
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:54:49
Pace8:45 /mi
2nd Half
Distance13.11 mi
Time1:58:08
Pace9:01 /mi
📊Positive Split: 2.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:51:5827:368:5327:36
8:53
-
10K
6.21 mi12:19:1454:528:5027:16
8:47
-0:06
15K
9.32 mi12:46:121:21:508:4726:58
8:41
-0:06
20K
12.43 mi13:13:191:48:578:4627:07
8:44
+0:03
Half
13.11 mi13:19:111:54:498:455:52
8:36
-0:08
25K
15.53 mi13:40:232:16:018:4521:12
8:45
+0:09
30K
18.64 mi14:08:352:44:138:4928:12
9:05
+0:20
20M
20.00 mi14:21:062:56:448:5012:31
9:13
+0:08
21M
21.00 mi14:30:523:06:308:539:46
9:46
+0:33
35K
21.75 mi14:37:183:12:568:526:26
8:36
-1:10
23M
23.00 mi14:48:423:24:208:5311:24
9:06
+0:30
24M
24.00 mi14:57:473:33:258:549:05
9:05
-0:01
40K
24.85 mi15:05:363:41:148:547:49
9:09
+0:04
25.2M
25.20 mi15:08:523:44:308:553:16
9:28
+0:19
Finish
26.22 mi15:17:193:52:578:538:27
8:18
-1:10

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

8:18 /mi

Average Pace

8:53 /mi

Slowest Pace

9:46 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:19:35

86% of race

Time at Steady Pace

33:22

14% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:53 /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 mi11:51:5827:368:5327:36
8:53
#21919
10K
6.21 mi12:19:1454:528:5027:16
8:47
#21603
15K
9.32 mi12:46:121:21:508:4726:58
8:41
#21150
20K
12.43 mi13:13:191:48:578:4627:07
8:44
#20752
Half
13.11 mi13:19:111:54:498:455:52
8:36
#20717
25K
15.53 mi13:40:232:16:018:4521:12
8:45
#20386
30K
18.64 mi14:08:352:44:138:4928:12
9:05
#19915
20M
20.00 mi14:21:062:56:448:5012:31
9:13
#19752
21M
21.00 mi14:30:523:06:308:539:46
9:46
#19606
35K
21.75 mi14:37:183:12:568:526:26
8:36
#19476
23M
23.00 mi14:48:423:24:208:5311:24
9:06
#19330
24M
24.00 mi14:57:473:33:258:549:05
9:05
#19258
40K
24.85 mi15:05:363:41:148:547:49
9:09
#19165
25.2M
25.20 mi15:08:523:44:308:553:16
9:28
#19080
Finish
26.22 mi15:17:193:52:578:538:27
8:18
#18940
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi219198579857920374(Top 72%)7640(Top 62%)7640(Top 140%)
10K6.21 mi3.10 mi21603+3168389+1908389+19021294(Top 75%)8191(Top 67%)8191(Top 150%)
15K9.32 mi3.11 mi21150+4538118+2718118+27120374(Top 72%)7640(Top 62%)7640(Top 140%)
20K12.43 mi3.11 mi20752+3987900+2187900+21819562(Top 69%)7240(Top 59%)7240(Top 132%)
Half13.11 mi0.68 mi20717+357882+187882+1819843(Top 70%)7381(Top 60%)7381(Top 135%)
25K15.53 mi2.42 mi20386+3317707+1757707+17518653(Top 66%)6786(Top 55%)6786(Top 124%)
30K18.64 mi3.11 mi19915+4717477+2307477+23018085(Top 64%)6624(Top 54%)6624(Top 121%)
20M20.00 mi1.36 mi19752+1637403+747403+7417846(Top 63%)6620(Top 54%)6620(Top 121%)
21M21.00 mi1.00 mi19606+1467350+537350+5317357(Top 61%)6459(Top 53%)6459(Top 118%)
35K21.75 mi0.75 mi19476+1307288+627288+6216120(Top 57%)5863(Top 48%)5863(Top 107%)
23M23.00 mi1.25 mi19330+1467239+497239+4916870(Top 59%)6377(Top 52%)6377(Top 117%)
24M24.00 mi1.00 mi19258+727221+187221+1817819(Top 63%)6939(Top 57%)6939(Top 127%)
40K24.85 mi0.85 mi19165+937184+377184+3717117(Top 60%)6648(Top 54%)6648(Top 122%)
25.2M25.20 mi0.35 mi19080+857154+307154+3014558(Top 51%)5347(Top 44%)5347(Top 98%)
Finish26.22 mi1.02 mi18940+1407093+617093+6114914(Top 53%)5442(Top 45%)5442(Top 100%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 72%
×21story building
+97ft-345ft

Overall

20374

Females

7640

F18-39

7640

5K→10K

3.1 - 6.2 mi

Top 75%
×5story building
+79ft-138ft

Overall

21294

Females

8191

F18-39

8191

10K→15K

6.2 - 9.3 mi

Top 72%
×3story building
+67ft-78ft

Overall

20374

Females

7640

F18-39

7640

15K→20K

9.3 - 12.4 mi

Top 69%
×5story building
+106ft-86ft

Overall

19562

Females

7240

F18-39

7240

20K→Half

12.4 - 13.1 mi

Top 70%
×2story building
+19ft-37ft

Overall

19843

Females

7381

F18-39

7381

Half→25K

13.1 - 15.5 mi

Top 66%
×4story building
+66ft-88ft

Overall

18653

Females

6786

F18-39

6786

25K→30K

15.5 - 18.6 mi

Top 64%
×9story building
+181ft-148ft

Overall

18085

Females

6624

F18-39

6624

30K→20M

18.6 - 20.0 mi

Top 63%
×5story building
+64ft-50ft

Overall

17846

Females

6620

F18-39

6620

20M→21M

20.0 - 21.0 mi

Top 61%
×8story building
+106ft-24ft

Overall

17357

Females

6459

F18-39

6459

21M→35K

21.0 - 21.8 mi

Top 57%
×7story building
+17ft-86ft

Overall

16120

Females

5863

F18-39

5863

35K→23M

21.8 - 23.0 mi

Top 59%
×5story building
+23ft-63ft

Overall

16870

Females

6377

F18-39

6377

23M→24M

23.0 - 24.0 mi

Top 63%
×6story building
+12ft-82ft

Overall

17819

Females

6939

F18-39

6939

24M→40K

24.0 - 24.9 mi

Top 60%
×1story
+6ft-20ft

Overall

17117

Females

6648

F18-39

6648

40K→25.2M

24.9 - 25.2 mi

Top 51%
×1story
+13ft-16ft

Overall

14558

Females

5347

F18-39

5347

25.2M→Finish

25.2 - 26.2 mi

Top 53%
×2story building
+22ft-21ft

Overall

14914

Females

5442

F18-39

5442

Passing Analysis

Category:
Athletes Passed
3398
Passed By
419
Net Change
+2979
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21919
5K → 10K454138+316#21919#21603
10K → 15K49340+453#21603#21150
15K → 20K42325+398#21150#20752
20K → Half4914+35#20752#20717
Half → 25K34514+331#20717#20386
25K → 30K50736+471#20386#19915
30K → 20M18623+163#19915#19752
20M → 21M18842+146#19752#19606
21M → 35K1344+130#19606#19476
35K → 23M16620+146#19476#19330
23M → 24M10533+72#19330#19258
24M → 40K11118+93#19258#19165
40K → 25.2M883+85#19165#19080
25.2M → Finish1499+140#19080#18940
TOTALS3398419+2979
📊

Passing Visuals

Category:
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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