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BOSTON MARATHON 2025

Alyssa Simm

Bib: 15993•F

NY

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 47%
Gender (Female)
#0 / 12228
Top 32%
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
7:31/mi
23:21
↑ 97↓ 3451.5%
10K· 6.21 mi
7:28/mi
46:33
↑ 79↓ 1380.4%
15K· 9.32 mi
7:30/mi
1:09:51
↑ 67↓ 78
20K· 12.43 mi
7:40/mi
1:33:41
↑ 106↓ 860.1%
Half· 13.11 mi
7:45/mi
1:38:58
↑ 19↓ 370.5%
25K· 15.53 mi
8:03/mi
1:58:28
↑ 66↓ 880.2%
30K· 18.64 mi
8:31/mi
2:24:57
↑ 181↓ 1480.2%
20M
8:47/mi
2:36:53
↑ 64↓ 500.2%
21M
9:10/mi
2:46:03
↑ 106↓ 241.6%
35K· 21.75 mi
8:20/mi
2:52:17
↑ 17↓ 861.7%
23M
8:38/mi
3:03:06
↑ 23↓ 630.6%
24M
8:24/mi
3:11:30
↓ 821.3%
40K· 24.85 mi
8:32/mi
3:18:48
↓ 200.3%
25.2M
9:17/mi
3:22:00
↑ 13↓ 160.2%
Finish· 26.22 mi
8:06/mi
3:30:15
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:38:58
Pace7:33 /mi
2nd Half
Distance13.11 mi
Time1:51:17
Pace8:29 /mi
📊Positive Split: 12.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:55:1023:217:3123:21
7:31
-
10K
6.21 mi11:18:2246:337:2923:12
7:28
-0:03
15K
9.32 mi11:41:401:09:517:3023:18
7:30
+0:02
20K
12.43 mi12:05:301:33:417:3223:50
7:40
+0:10
Half
13.11 mi12:10:471:38:587:335:17
7:45
+0:05
25K
15.53 mi12:30:171:58:287:3819:30
8:03
+0:18
30K
18.64 mi12:56:462:24:577:4726:29
8:31
+0:28
20M
20.00 mi13:08:422:36:537:5111:56
8:47
+0:16
21M
21.00 mi13:17:522:46:037:549:10
9:10
+0:23
35K
21.75 mi13:24:062:52:177:556:14
8:20
-0:50
23M
23.00 mi13:34:553:03:067:5810:49
8:38
+0:18
24M
24.00 mi13:43:193:11:307:598:24
8:24
-0:14
40K
24.85 mi13:50:373:18:488:007:18
8:32
+0:08
25.2M
25.20 mi13:53:493:22:008:013:12
9:17
+0:45
Finish
26.22 mi14:02:043:30:158:018:15
8:06
-1:11

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

7:28 /mi

Average Pace

8:01 /mi

Slowest Pace

9:17 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:38:58

47% of race

Time at Steady Pace

1:16:10

36% of race

Time at Slower Pace

35:07

17% of race

Average Pace: 8:01 /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 mi10:55:1023:217:3123:21
7:31
#12394
10K
6.21 mi11:18:2246:337:2923:12
7:28
#12057
15K
9.32 mi11:41:401:09:517:3023:18
7:30
#11936
20K
12.43 mi12:05:301:33:417:3223:50
7:40
#11987
Half
13.11 mi12:10:471:38:587:335:17
7:45
#12070
25K
15.53 mi12:30:171:58:287:3819:30
8:03
#12409
30K
18.64 mi12:56:462:24:577:4726:29
8:31
#12864
20M
20.00 mi13:08:422:36:537:5111:56
8:47
#13080
21M
21.00 mi13:17:522:46:037:549:10
9:10
#13145
35K
21.75 mi13:24:062:52:177:556:14
8:20
#13187
23M
23.00 mi13:34:553:03:067:5810:49
8:38
#13229
24M
24.00 mi13:43:193:11:307:598:24
8:24
#13239
40K
24.85 mi13:50:373:18:488:007:18
8:32
#13256
25.2M
25.20 mi13:53:493:22:008:013:12
9:17
#13244
Finish
26.22 mi14:02:043:30:158:018:15
8:06
#13283
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi123943014301411784(Top 41%)2792(Top 23%)2792(Top 51%)
10K6.21 mi3.10 mi12057+3372843+1712843+17111804(Top 42%)2718(Top 22%)2718(Top 50%)
15K9.32 mi3.11 mi11936+1212793+502793+5011784(Top 41%)2792(Top 23%)2792(Top 51%)
20K12.43 mi3.11 mi11987-512862-692862-6912169(Top 43%)3093(Top 25%)3093(Top 57%)
Half13.11 mi0.68 mi12070-832916-542916-5413832(Top 49%)3971(Top 32%)3971(Top 73%)
25K15.53 mi2.42 mi12409-3393141-2253141-22514229(Top 50%)4322(Top 35%)4322(Top 79%)
30K18.64 mi3.11 mi12864-4553463-3223463-32214910(Top 52%)4851(Top 40%)4851(Top 89%)
20M20.00 mi1.36 mi13080-2163627-1643627-16415559(Top 55%)5328(Top 44%)5328(Top 97%)
21M21.00 mi1.00 mi13145-653687-603687-6014443(Top 51%)4855(Top 40%)4855(Top 89%)
35K21.75 mi0.75 mi13187-423729-423729-4214493(Top 51%)4947(Top 40%)4947(Top 90%)
23M23.00 mi1.25 mi13229-423798-693798-6914190(Top 50%)4893(Top 40%)4893(Top 89%)
24M24.00 mi1.00 mi13239-103833-353833-3513891(Top 49%)4758(Top 39%)4758(Top 87%)
40K24.85 mi0.85 mi13256-173875-423875-4213683(Top 48%)4794(Top 39%)4794(Top 88%)
25.2M25.20 mi0.35 mi13244+123879-43879-413384(Top 47%)4693(Top 38%)4693(Top 86%)
Finish26.22 mi1.02 mi13283-393914-353914-3513573(Top 48%)4731(Top 39%)4731(Top 87%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 41%
×21story building
+97ft-345ft

Overall

11784

Females

2792

F18-39

2792

5K→10K

3.1 - 6.2 mi

Top 42%
×5story building
+79ft-138ft

Overall

11804

Females

2718

F18-39

2718

10K→15K

6.2 - 9.3 mi

Top 41%
×3story building
+67ft-78ft

Overall

11784

Females

2792

F18-39

2792

15K→20K

9.3 - 12.4 mi

Top 43%
×5story building
+106ft-86ft

Overall

12169

Females

3093

F18-39

3093

20K→Half

12.4 - 13.1 mi

Top 49%
×2story building
+19ft-37ft

Overall

13832

Females

3971

F18-39

3971

Half→25K

13.1 - 15.5 mi

Top 50%
×4story building
+66ft-88ft

Overall

14229

Females

4322

F18-39

4322

25K→30K

15.5 - 18.6 mi

Top 52%
×9story building
+181ft-148ft

Overall

14910

Females

4851

F18-39

4851

30K→20M

18.6 - 20.0 mi

Top 55%
×5story building
+64ft-50ft

Overall

15559

Females

5328

F18-39

5328

20M→21M

20.0 - 21.0 mi

Top 51%
×8story building
+106ft-24ft

Overall

14443

Females

4855

F18-39

4855

21M→35K

21.0 - 21.8 mi

Top 51%
×7story building
+17ft-86ft

Overall

14493

Females

4947

F18-39

4947

35K→23M

21.8 - 23.0 mi

Top 50%
×5story building
+23ft-63ft

Overall

14190

Females

4893

F18-39

4893

23M→24M

23.0 - 24.0 mi

Top 49%
×6story building
+12ft-82ft

Overall

13891

Females

4758

F18-39

4758

24M→40K

24.0 - 24.9 mi

Top 48%
×1story
+6ft-20ft

Overall

13683

Females

4794

F18-39

4794

40K→25.2M

24.9 - 25.2 mi

Top 47%
×1story
+13ft-16ft

Overall

13384

Females

4693

F18-39

4693

25.2M→Finish

25.2 - 26.2 mi

Top 48%
×2story building
+22ft-21ft

Overall

13573

Females

4731

F18-39

4731

Passing Analysis

Category:
Athletes Passed
1630
Passed By
2519
Net Change
-889
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12394
5K → 10K468131+337#12394#12057
10K → 15K247126+121#12057#11936
15K → 20K176227-51#11936#11987
20K → Half1598-83#11987#12070
Half → 25K79418-339#12070#12409
25K → 30K116571-455#12409#12864
30K → 20M75291-216#12864#13080
20M → 21M83148-65#13080#13145
21M → 35K4284-42#13145#13187
35K → 23M92134-42#13187#13229
23M → 24M7787-10#13229#13239
24M → 40K7491-17#13239#13256
40K → 25.2M3826+12#13256#13244
25.2M → Finish4887-39#13244#13283
TOTALS16302519-889
📊

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