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BOSTON MARATHON 2025

Amy Spero

Bib: 17866•F

MD

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 49%
Gender (Female)
#0 / 12228
Top 35%
Masters (Masters Women)
#0 / 6759
Top 20%
Division (F40-44)
#0 / 1718
Top 41%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:20
Rank: #17778
Start → 5K
25:20 | 8:09/mi
10K· 6.21 mi
50:36
Rank: #17594 (+184)
5K → 10K
25:16 | 8:08/mi
15K· 9.32 mi
1:15:43
Rank: #17253 (+341)
10K → 15K
25:07 | 8:05/mi
20K· 12.43 mi
1:40:47
Rank: #16752 (+501)
15K → 20K
25:04 | 8:04/mi
Half· 13.11 mi
1:46:10
Rank: #16667 (+85)
20K → Half
5:23 | 7:53/mi
25K· 15.53 mi
2:05:49
Rank: #16325 (+342)
Half → 25K
19:39 | 8:06/mi
30K· 18.64 mi
2:31:03
Rank: #15529 (+796)
25K → 30K
25:14 | 8:07/mi
20M
2:42:02
Rank: #15151 (+378)
30K → 20M
10:59 | 8:05/mi
21M
2:50:29
Rank: #14799 (+352)
20M → 21M
8:27 | 8:27/mi
35K· 21.75 mi
2:56:22
Rank: #14648 (+151)
21M → 35K
5:53 | 7:52/mi
23M
3:06:30
Rank: #14394 (+254)
35K → 23M
10:08 | 8:06/mi
24M
3:14:26
Rank: #14223 (+171)
23M → 24M
7:56 | 7:56/mi
40K· 24.85 mi
3:21:21
Rank: #14060 (+163)
24M → 40K
6:55 | 8:05/mi
25.2M
3:24:21
Rank: #13963 (+97)
40K → 25.2M
3:00 | 8:42/mi
Finish· 26.22 mi
3:32:19
Rank: #13839 (+124)
25.2M → Finish
7:58 | 7:49/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:46:10
Pace8:06 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:46:09
Pace8:06 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:5525:208:0925:20
8:09
-
10K
6.21 mi11:41:1150:368:0925:16
8:08
-0:01
15K
9.32 mi12:06:181:15:438:0725:07
8:05
-0:03
20K
12.43 mi12:31:221:40:478:0725:04
8:04
-0:01
Half
13.11 mi12:36:451:46:108:065:23
7:53
-0:11
25K
15.53 mi12:56:242:05:498:0619:39
8:06
+0:13
30K
18.64 mi13:21:382:31:038:0625:14
8:07
+0:01
20M
20.00 mi13:32:372:42:028:0610:59
8:05
-0:02
21M
21.00 mi13:41:042:50:298:078:27
8:27
+0:22
35K
21.75 mi13:46:572:56:228:075:53
7:52
-0:35
23M
23.00 mi13:57:053:06:308:0710:08
8:06
+0:14
24M
24.00 mi14:05:013:14:268:067:56
7:56
-0:10
40K
24.85 mi14:11:563:21:218:066:55
8:05
+0:09
25.2M
25.20 mi14:14:563:24:218:073:00
8:42
+0:37
Finish
26.22 mi14:22:543:32:198:067:58
7:49
-0:53

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

7:49 /mi

Average Pace

8:06 /mi

Slowest Pace

8:42 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:29:19

99% of race

Time at Steady Pace

3:00

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:06 /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 mi11:15:5525:208:0925:20
8:09
#17778
10K
6.21 mi11:41:1150:368:0925:16
8:08
#17594
15K
9.32 mi12:06:181:15:438:0725:07
8:05
#17253
20K
12.43 mi12:31:221:40:478:0725:04
8:04
#16752
Half
13.11 mi12:36:451:46:108:065:23
7:53
#16667
25K
15.53 mi12:56:242:05:498:0619:39
8:06
#16325
30K
18.64 mi13:21:382:31:038:0625:14
8:07
#15529
20M
20.00 mi13:32:372:42:028:0610:59
8:05
#15151
21M
21.00 mi13:41:042:50:298:078:27
8:27
#14799
35K
21.75 mi13:46:572:56:228:075:53
7:52
#14648
23M
23.00 mi13:57:053:06:308:0710:08
8:06
#14394
24M
24.00 mi14:05:013:14:268:067:56
7:56
#14223
40K
24.85 mi14:11:563:21:218:066:55
8:05
#14060
25.2M
25.20 mi14:14:563:24:218:073:00
8:42
#13963
Finish
26.22 mi14:22:543:32:198:067:58
7:49
#13839
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi177786199619916640(Top 59%)5520(Top 45%)5520(Top 321%)
10K6.21 mi3.10 mi17594+1846091+1086091+10817434(Top 61%)5956(Top 49%)5956(Top 347%)
15K9.32 mi3.11 mi17253+3415863+2285863+22816640(Top 59%)5520(Top 45%)5520(Top 321%)
20K12.43 mi3.11 mi16752+5015588+2755588+27515412(Top 54%)4864(Top 40%)4864(Top 283%)
Half13.11 mi0.68 mi16667+855540+485540+4815043(Top 53%)4626(Top 38%)4626(Top 269%)
25K15.53 mi2.42 mi16325+3425356+1845356+18414684(Top 52%)4578(Top 37%)4578(Top 266%)
30K18.64 mi3.11 mi15529+7964961+3954961+39512269(Top 43%)3431(Top 28%)3431(Top 200%)
20M20.00 mi1.36 mi15151+3784787+1744787+17411026(Top 39%)2967(Top 24%)2967(Top 173%)
21M21.00 mi1.00 mi14799+3524609+1784609+17810200(Top 36%)2715(Top 22%)2715(Top 158%)
35K21.75 mi0.75 mi14648+1514532+774532+7711369(Top 40%)3321(Top 27%)3321(Top 193%)
23M23.00 mi1.25 mi14394+2544435+974435+9710746(Top 38%)3118(Top 25%)3118(Top 181%)
24M24.00 mi1.00 mi14223+1714371+644371+6410822(Top 38%)3221(Top 26%)3221(Top 187%)
40K24.85 mi0.85 mi14060+1634309+624309+6210833(Top 38%)3342(Top 27%)3342(Top 195%)
25.2M25.20 mi0.35 mi13963+974271+384271+3810125(Top 36%)3112(Top 25%)3112(Top 181%)
Finish26.22 mi1.02 mi13839+1244233+384233+3811603(Top 41%)3756(Top 31%)3756(Top 219%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 59%
×21stories
+97ft-345ft

Overall

16640

Females

5520

F40-44

5520

5K→10K

3.1 - 6.2 mi

Top 61%
×5stories
+79ft-138ft

Overall

17434

Females

5956

F40-44

5956

10K→15K

6.2 - 9.3 mi

Top 59%
×3stories
+67ft-78ft

Overall

16640

Females

5520

F40-44

5520

15K→20K

9.3 - 12.4 mi

Top 54%
×5stories
+106ft-86ft

Overall

15412

Females

4864

F40-44

4864

20K→Half

12.4 - 13.1 mi

Top 53%
×2stories
+19ft-37ft

Overall

15043

Females

4626

F40-44

4626

Half→25K

13.1 - 15.5 mi

Top 52%
×4stories
+66ft-88ft

Overall

14684

Females

4578

F40-44

4578

25K→30K

15.5 - 18.6 mi

Top 43%
×9stories
+181ft-148ft

Overall

12269

Females

3431

F40-44

3431

30K→20M

18.6 - 20.0 mi

Top 39%
×5stories
+64ft-50ft

Overall

11026

Females

2967

F40-44

2967

20M→21M

20.0 - 21.0 mi

Top 36%
×8stories
+106ft-24ft

Overall

10200

Females

2715

F40-44

2715

21M→35K

21.0 - 21.8 mi

Top 40%
×7stories
+17ft-86ft

Overall

11369

Females

3321

F40-44

3321

35K→23M

21.8 - 23.0 mi

Top 38%
×5stories
+23ft-63ft

Overall

10746

Females

3118

F40-44

3118

23M→24M

23.0 - 24.0 mi

Top 38%
×6stories
+12ft-82ft

Overall

10822

Females

3221

F40-44

3221

24M→40K

24.0 - 24.9 mi

Top 38%
×1story
+6ft-20ft

Overall

10833

Females

3342

F40-44

3342

40K→25.2M

24.9 - 25.2 mi

Top 36%
×1story
+13ft-16ft

Overall

10125

Females

3112

F40-44

3112

25.2M→Finish

25.2 - 26.2 mi

Top 41%
×2stories
+22ft-21ft

Overall

11603

Females

3756

F40-44

3756

Passing Analysis

Category:
Athletes Passed
4310
Passed By
371
Net Change
+3939
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17778
5K → 10K385201+184#17778#17594
10K → 15K41170+341#17594#17253
15K → 20K51514+501#17253#16752
20K → Half927+85#16752#16667
Half → 25K35614+342#16667#16325
25K → 30K7993+796#16325#15529
30K → 20M3813+378#15529#15151
20M → 21M3597+352#15151#14799
21M → 35K1598+151#14799#14648
35K → 23M2595+254#14648#14394
23M → 24M1765+171#14394#14223
24M → 40K1729+163#14223#14060
40K → 25.2M1014+97#14060#13963
25.2M → Finish14521+124#13963#13839
TOTALS4310371+3939
📊

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