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BOSTON MARATHON 2025

Amber Slayton

Bib: 16147•F

CA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 43%
Gender (Female)
#0 / 12228
Top 28%
Division (F18-39)
#0 / 5469
Top 46%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:10
Rank: #14627
Start → 5K
24:10 | 7:47/mi
10K· 6.21 mi
48:36
Rank: #14958 (-331)
5K → 10K
24:26 | 7:52/mi
15K· 9.32 mi
1:13:03
Rank: #14963 (-5)
10K → 15K
24:27 | 7:52/mi
20K· 12.43 mi
1:37:24
Rank: #14562 (+401)
15K → 20K
24:21 | 7:50/mi
Half· 13.11 mi
1:42:40
Rank: #14486 (+76)
20K → Half
5:16 | 7:43/mi
25K· 15.53 mi
2:01:43
Rank: #14184 (+302)
Half → 25K
19:03 | 7:51/mi
30K· 18.64 mi
2:26:52
Rank: #13702 (+482)
25K → 30K
25:09 | 8:06/mi
20M
2:37:45
Rank: #13431 (+271)
30K → 20M
10:53 | 8:01/mi
21M
2:46:14
Rank: #13221 (+210)
20M → 21M
8:29 | 8:29/mi
35K· 21.75 mi
2:52:07
Rank: #13131 (+90)
21M → 35K
5:53 | 7:52/mi
23M
3:02:07
Rank: #12905 (+226)
35K → 23M
10:00 | 7:59/mi
24M
3:09:57
Rank: #12754 (+151)
23M → 24M
7:50 | 7:50/mi
40K· 24.85 mi
3:16:45
Rank: #12629 (+125)
24M → 40K
6:48 | 7:57/mi
25.2M
3:19:43
Rank: #12550 (+79)
40K → 25.2M
2:58 | 8:36/mi
Finish· 26.22 mi
3:27:16
Rank: #12354 (+196)
25.2M → Finish
7:33 | 7:25/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:42:40
Pace7:50 /mi
2nd Half
Distance13.11 mi
Time1:44:36
Pace7:59 /mi
📊Positive Split: 1.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:57:4824:107:4724:10
7:47
-
10K
6.21 mi11:22:1448:367:4924:26
7:52
+0:05
15K
9.32 mi11:46:411:13:037:5024:27
7:52
0:00
20K
12.43 mi12:11:021:37:247:5024:21
7:50
-0:02
Half
13.11 mi12:16:181:42:407:505:16
7:43
-0:07
25K
15.53 mi12:35:212:01:437:5019:03
7:51
+0:08
30K
18.64 mi13:00:302:26:527:5325:09
8:06
+0:15
20M
20.00 mi13:11:232:37:457:5310:53
8:01
-0:05
21M
21.00 mi13:19:522:46:147:558:29
8:29
+0:28
35K
21.75 mi13:25:452:52:077:555:53
7:52
-0:37
23M
23.00 mi13:35:453:02:077:5510:00
7:59
+0:07
24M
24.00 mi13:43:353:09:577:557:50
7:50
-0:09
40K
24.85 mi13:50:233:16:457:556:48
7:57
+0:07
25.2M
25.20 mi13:53:213:19:437:562:58
8:36
+0:39
Finish
26.22 mi14:00:543:27:167:557:33
7:25
-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

7:25 /mi

Average Pace

7:55 /mi

Slowest Pace

8:36 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:15:49

94% of race

Time at Steady Pace

11:27

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:54 /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 mi10:57:4824:107:4724:10
7:47
#14627
10K
6.21 mi11:22:1448:367:4924:26
7:52
#14958
15K
9.32 mi11:46:411:13:037:5024:27
7:52
#14963
20K
12.43 mi12:11:021:37:247:5024:21
7:50
#14562
Half
13.11 mi12:16:181:42:407:505:16
7:43
#14486
25K
15.53 mi12:35:212:01:437:5019:03
7:51
#14184
30K
18.64 mi13:00:302:26:527:5325:09
8:06
#13702
20M
20.00 mi13:11:232:37:457:5310:53
8:01
#13431
21M
21.00 mi13:19:522:46:147:558:29
8:29
#13221
35K
21.75 mi13:25:452:52:077:555:53
7:52
#13131
23M
23.00 mi13:35:453:02:077:5510:00
7:59
#12905
24M
24.00 mi13:43:353:09:577:557:50
7:50
#12754
40K
24.85 mi13:50:233:16:457:556:48
7:57
#12629
25.2M
25.20 mi13:53:213:19:437:562:58
8:36
#12550
Finish
26.22 mi14:00:543:27:167:557:33
7:25
#12354
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi146274297429714991(Top 53%)4571(Top 37%)4571(Top 84%)
10K6.21 mi3.10 mi14958-3314522-2254522-22515392(Top 54%)4772(Top 39%)4772(Top 87%)
15K9.32 mi3.11 mi14963-54533-114533-1114991(Top 53%)4571(Top 37%)4571(Top 84%)
20K12.43 mi3.11 mi14562+4014322+2114322+21113573(Top 48%)3855(Top 32%)3855(Top 70%)
Half13.11 mi0.68 mi14486+764289+334289+3313590(Top 48%)3812(Top 31%)3812(Top 70%)
25K15.53 mi2.42 mi14184+3024148+1414148+14112825(Top 45%)3576(Top 29%)3576(Top 65%)
30K18.64 mi3.11 mi13702+4823938+2103938+21012077(Top 43%)3328(Top 27%)3328(Top 61%)
20M20.00 mi1.36 mi13431+2713818+1203818+12010538(Top 37%)2712(Top 22%)2712(Top 50%)
21M21.00 mi1.00 mi13221+2103734+843734+8410382(Top 37%)2812(Top 23%)2812(Top 51%)
35K21.75 mi0.75 mi13131+903697+373697+3711343(Top 40%)3295(Top 27%)3295(Top 60%)
23M23.00 mi1.25 mi12905+2263609+883609+889962(Top 35%)2729(Top 22%)2729(Top 50%)
24M24.00 mi1.00 mi12754+1513556+533556+5310107(Top 36%)2871(Top 23%)2871(Top 52%)
40K24.85 mi0.85 mi12629+1253520+363520+369902(Top 35%)2882(Top 24%)2882(Top 53%)
25.2M25.20 mi0.35 mi12550+793501+193501+199529(Top 34%)2806(Top 23%)2806(Top 51%)
Finish26.22 mi1.02 mi12354+1963436+653436+658607(Top 30%)2354(Top 19%)2354(Top 43%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 53%
×21stories
+97ft-345ft

Overall

14991

Females

4571

F18-39

4571

5K→10K

3.1 - 6.2 mi

Top 54%
×5stories
+79ft-138ft

Overall

15392

Females

4772

F18-39

4772

10K→15K

6.2 - 9.3 mi

Top 53%
×3stories
+67ft-78ft

Overall

14991

Females

4571

F18-39

4571

15K→20K

9.3 - 12.4 mi

Top 48%
×5stories
+106ft-86ft

Overall

13573

Females

3855

F18-39

3855

20K→Half

12.4 - 13.1 mi

Top 48%
×2stories
+19ft-37ft

Overall

13590

Females

3812

F18-39

3812

Half→25K

13.1 - 15.5 mi

Top 45%
×4stories
+66ft-88ft

Overall

12825

Females

3576

F18-39

3576

25K→30K

15.5 - 18.6 mi

Top 43%
×9stories
+181ft-148ft

Overall

12077

Females

3328

F18-39

3328

30K→20M

18.6 - 20.0 mi

Top 37%
×5stories
+64ft-50ft

Overall

10538

Females

2712

F18-39

2712

20M→21M

20.0 - 21.0 mi

Top 37%
×8stories
+106ft-24ft

Overall

10382

Females

2812

F18-39

2812

21M→35K

21.0 - 21.8 mi

Top 40%
×7stories
+17ft-86ft

Overall

11343

Females

3295

F18-39

3295

35K→23M

21.8 - 23.0 mi

Top 35%
×5stories
+23ft-63ft

Overall

9962

Females

2729

F18-39

2729

23M→24M

23.0 - 24.0 mi

Top 36%
×6stories
+12ft-82ft

Overall

10107

Females

2871

F18-39

2871

24M→40K

24.0 - 24.9 mi

Top 35%
×1story
+6ft-20ft

Overall

9902

Females

2882

F18-39

2882

40K→25.2M

24.9 - 25.2 mi

Top 34%
×1story
+13ft-16ft

Overall

9529

Females

2806

F18-39

2806

25.2M→Finish

25.2 - 26.2 mi

Top 30%
×2stories
+22ft-21ft

Overall

8607

Females

2354

F18-39

2354

Passing Analysis

Category:
Athletes Passed
3208
Passed By
935
Net Change
+2273
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14627
5K → 10K168499-331#14627#14958
10K → 15K206211-5#14958#14963
15K → 20K43231+401#14963#14562
20K → Half8711+76#14562#14486
Half → 25K33331+302#14486#14184
25K → 30K52341+482#14184#13702
30K → 20M2809+271#13702#13431
20M → 21M22717+210#13431#13221
21M → 35K10414+90#13221#13131
35K → 23M24115+226#13131#12905
23M → 24M16716+151#12905#12754
24M → 40K14722+125#12754#12629
40K → 25.2M812+79#12629#12550
25.2M → Finish21216+196#12550#12354
TOTALS3208935+2273
📊

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