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BOSTON MARATHON 2025

Heather Horvath

Bib: 20611•F

PA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 50%
Masters (Masters Women)
#0 / 6759
Top 39%
Division (F45-49)
#0 / 1813
Top 49%
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
8:38/mi
26:49
↑ 97↓ 3451.5%
10K· 6.21 mi
8:50/mi
54:17
↑ 79↓ 1380.4%
15K· 9.32 mi
9:02/mi
1:22:20
↑ 67↓ 78
20K· 12.43 mi
9:06/mi
1:50:36
↑ 106↓ 860.1%
Half· 13.11 mi
8:07/mi
1:56:08
↑ 19↓ 370.5%
25K· 15.53 mi
8:20/mi
2:16:20
↑ 66↓ 880.2%
30K· 18.64 mi
8:20/mi
2:42:14
↑ 181↓ 1480.2%
20M
8:14/mi
2:53:25
↑ 64↓ 500.2%
21M
8:46/mi
3:02:11
↑ 106↓ 241.6%
35K· 21.75 mi
8:23/mi
3:08:27
↑ 17↓ 861.7%
23M
8:19/mi
3:18:52
↑ 23↓ 630.6%
24M
8:02/mi
3:26:54
↓ 821.3%
40K· 24.85 mi
8:10/mi
3:33:53
↓ 200.3%
25.2M
8:51/mi
3:36:56
↑ 13↓ 160.2%
Finish· 26.22 mi
7:59/mi
3:45:04
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:56:08
Pace8:52 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:48:56
Pace8:19 /mi
📊Negative Split: 6.2% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:22:3826:498:3826:49
8:38
-
10K
6.21 mi11:50:0654:178:4427:28
8:50
+0:12
15K
9.32 mi12:18:091:22:208:5028:03
9:02
+0:12
20K
12.43 mi12:46:251:50:368:5428:16
9:06
+0:04
Half
13.11 mi12:51:571:56:088:525:32
8:07
-0:59
25K
15.53 mi13:12:092:16:208:4720:12
8:20
+0:13
30K
18.64 mi13:38:032:42:148:4225:54
8:20
0:00
20M
20.00 mi13:49:142:53:258:4011:11
8:14
-0:06
21M
21.00 mi13:58:003:02:118:418:46
8:46
+0:32
35K
21.75 mi14:04:163:08:278:406:16
8:23
-0:23
23M
23.00 mi14:14:413:18:528:3910:25
8:19
-0:04
24M
24.00 mi14:22:433:26:548:378:02
8:02
-0:17
40K
24.85 mi14:29:423:33:538:366:59
8:10
+0:08
25.2M
25.20 mi14:32:453:36:568:373:03
8:51
+0:41
Finish
26.22 mi14:40:533:45:048:358:08
7:59
-0:52

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

7:59 /mi

Average Pace

8:35 /mi

Slowest Pace

9:06 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:18:14

61% of race

Time at Steady Pace

1:26:50

39% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:35 /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 mi11:22:3826:498:3826:49
8:38
#20651
10K
6.21 mi11:50:0654:178:4427:28
8:50
#21089
15K
9.32 mi12:18:091:22:208:5028:03
9:02
#21457
20K
12.43 mi12:46:251:50:368:5428:16
9:06
#21448
Half
13.11 mi12:51:571:56:088:525:32
8:07
#21220
25K
15.53 mi13:12:092:16:208:4720:12
8:20
#20503
30K
18.64 mi13:38:032:42:148:4225:54
8:20
#19338
20M
20.00 mi13:49:142:53:258:4011:11
8:14
#18849
21M
21.00 mi13:58:003:02:118:418:46
8:46
#18456
35K
21.75 mi14:04:163:08:278:406:16
8:23
#18320
23M
23.00 mi14:14:413:18:528:3910:25
8:19
#17955
24M
24.00 mi14:22:433:26:548:378:02
8:02
#17658
40K
24.85 mi14:29:423:33:538:366:59
8:10
#17442
25.2M
25.20 mi14:32:453:36:568:373:03
8:51
#17331
Finish
26.22 mi14:40:533:45:048:358:08
7:59
#17151
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi206517880788022166(Top 78%)8642(Top 71%)8642(Top 477%)
10K6.21 mi3.10 mi21089-4388099-2198099-21921603(Top 76%)8366(Top 68%)8366(Top 461%)
15K9.32 mi3.11 mi21457-3688279-1808279-18022166(Top 78%)8642(Top 71%)8642(Top 477%)
20K12.43 mi3.11 mi21448+98288-98288-921434(Top 75%)8278(Top 68%)8278(Top 457%)
Half13.11 mi0.68 mi21220+2288153+1358153+13516753(Top 59%)5628(Top 46%)5628(Top 310%)
25K15.53 mi2.42 mi20503+7177775+3787775+37816144(Top 57%)5400(Top 44%)5400(Top 298%)
30K18.64 mi3.11 mi19338+11657152+6237152+62313741(Top 48%)4226(Top 35%)4226(Top 233%)
20M20.00 mi1.36 mi18849+4896883+2696883+26912046(Top 42%)3479(Top 28%)3479(Top 192%)
21M21.00 mi1.00 mi18456+3936697+1866697+18612143(Top 43%)3688(Top 30%)3688(Top 203%)
35K21.75 mi0.75 mi18320+1366636+616636+6114779(Top 52%)5128(Top 42%)5128(Top 283%)
23M23.00 mi1.25 mi17955+3656471+1656471+16512201(Top 43%)3858(Top 32%)3858(Top 213%)
24M24.00 mi1.00 mi17658+2976335+1366335+13611543(Top 41%)3605(Top 29%)3605(Top 199%)
40K24.85 mi0.85 mi17442+2166242+936242+9311421(Top 40%)3630(Top 30%)3630(Top 200%)
25.2M25.20 mi0.35 mi17331+1116181+616181+6111059(Top 39%)3553(Top 29%)3553(Top 196%)
Finish26.22 mi1.02 mi17151+1806103+786103+7812799(Top 45%)4342(Top 36%)4342(Top 239%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 78%
×21story building
+97ft-345ft

Overall

22166

Females

8642

F45-49

8642

5K→10K

3.1 - 6.2 mi

Top 76%
×5story building
+79ft-138ft

Overall

21603

Females

8366

F45-49

8366

10K→15K

6.2 - 9.3 mi

Top 78%
×3story building
+67ft-78ft

Overall

22166

Females

8642

F45-49

8642

15K→20K

9.3 - 12.4 mi

Top 75%
×5story building
+106ft-86ft

Overall

21434

Females

8278

F45-49

8278

20K→Half

12.4 - 13.1 mi

Top 59%
×2story building
+19ft-37ft

Overall

16753

Females

5628

F45-49

5628

Half→25K

13.1 - 15.5 mi

Top 57%
×4story building
+66ft-88ft

Overall

16144

Females

5400

F45-49

5400

25K→30K

15.5 - 18.6 mi

Top 48%
×9story building
+181ft-148ft

Overall

13741

Females

4226

F45-49

4226

30K→20M

18.6 - 20.0 mi

Top 42%
×5story building
+64ft-50ft

Overall

12046

Females

3479

F45-49

3479

20M→21M

20.0 - 21.0 mi

Top 43%
×8story building
+106ft-24ft

Overall

12143

Females

3688

F45-49

3688

21M→35K

21.0 - 21.8 mi

Top 52%
×7story building
+17ft-86ft

Overall

14779

Females

5128

F45-49

5128

35K→23M

21.8 - 23.0 mi

Top 43%
×5story building
+23ft-63ft

Overall

12201

Females

3858

F45-49

3858

23M→24M

23.0 - 24.0 mi

Top 41%
×6story building
+12ft-82ft

Overall

11543

Females

3605

F45-49

3605

24M→40K

24.0 - 24.9 mi

Top 40%
×1story
+6ft-20ft

Overall

11421

Females

3630

F45-49

3630

40K→25.2M

24.9 - 25.2 mi

Top 39%
×1story
+13ft-16ft

Overall

11059

Females

3553

F45-49

3553

25.2M→Finish

25.2 - 26.2 mi

Top 45%
×2story building
+22ft-21ft

Overall

12799

Females

4342

F45-49

4342

Passing Analysis

Category:
Athletes Passed
4741
Passed By
1241
Net Change
+3500
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20651
5K → 10K107545-438#20651#21089
10K → 15K107475-368#21089#21457
15K → 20K209200+9#21457#21448
20K → Half2280+228#21448#21220
Half → 25K7181+717#21220#20503
25K → 30K11650+1165#20503#19338
30K → 20M4890+489#19338#18849
20M → 21M3963+393#18849#18456
21M → 35K1404+136#18456#18320
35K → 23M3683+365#18320#17955
23M → 24M2970+297#17955#17658
24M → 40K2182+216#17658#17442
40K → 25.2M1132+111#17442#17331
25.2M → Finish1866+180#17331#17151
TOTALS47411241+3500
📊

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