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BOSTON MARATHON 2025

Allison Shelly

Bib: 15925•F

DC

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 38%
Gender (Female)
#0 / 12228
Top 22%
Division (F18-39)
#0 / 5469
Top 38%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:16
Rank: #12152
Start → 5K
23:16 | 7:29/mi
10K· 6.21 mi
47:07
Rank: #12865 (-713)
5K → 10K
23:51 | 7:41/mi
15K· 9.32 mi
1:10:47
Rank: #12813 (+52)
10K → 15K
23:40 | 7:37/mi
20K· 12.43 mi
1:34:14
Rank: #12340 (+473)
15K → 20K
23:27 | 7:33/mi
Half· 13.11 mi
1:39:16
Rank: #12273 (+67)
20K → Half
5:02 | 7:23/mi
25K· 15.53 mi
1:57:37
Rank: #11935 (+338)
Half → 25K
18:21 | 7:34/mi
30K· 18.64 mi
2:22:18
Rank: #11688 (+247)
25K → 30K
24:41 | 7:57/mi
20M
2:33:06
Rank: #11516 (+172)
30K → 20M
10:48 | 7:57/mi
21M
2:41:40
Rank: #11454 (+62)
20M → 21M
8:34 | 8:34/mi
35K· 21.75 mi
2:47:26
Rank: #11384 (+70)
21M → 35K
5:46 | 7:42/mi
23M
2:57:21
Rank: #11239 (+145)
35K → 23M
9:55 | 7:55/mi
24M
3:05:07
Rank: #11114 (+125)
23M → 24M
7:46 | 7:46/mi
40K· 24.85 mi
3:12:03
Rank: #11072 (+42)
24M → 40K
6:56 | 8:07/mi
25.2M
3:14:51
Rank: #10968 (+104)
40K → 25.2M
2:48 | 8:07/mi
Finish· 26.22 mi
3:22:35
Rank: #10912 (+56)
25.2M → Finish
7:44 | 7:35/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:39:16
Pace7:34 /mi
2nd Half
Distance13.11 mi
Time1:43:19
Pace7:53 /mi
📊Positive Split: 4.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:57:4723:167:2923:16
7:29
-
10K
6.21 mi11:21:3847:077:3523:51
7:41
+0:12
15K
9.32 mi11:45:181:10:477:3623:40
7:37
-0:04
20K
12.43 mi12:08:451:34:147:3523:27
7:33
-0:04
Half
13.11 mi12:13:471:39:167:345:02
7:23
-0:10
25K
15.53 mi12:32:081:57:377:3418:21
7:34
+0:11
30K
18.64 mi12:56:492:22:187:3824:41
7:57
+0:23
20M
20.00 mi13:07:372:33:067:3910:48
7:57
0:00
21M
21.00 mi13:16:112:41:407:428:34
8:34
+0:37
35K
21.75 mi13:21:572:47:267:425:46
7:42
-0:52
23M
23.00 mi13:31:522:57:217:439:55
7:55
+0:13
24M
24.00 mi13:39:383:05:077:437:46
7:46
-0:09
40K
24.85 mi13:46:343:12:037:446:56
8:07
+0:21
25.2M
25.20 mi13:49:223:14:517:442:48
8:07
0:00
Finish
26.22 mi13:57:063:22:357:447:44
7:35
-0:32

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

7:23 /mi

Average Pace

7:44 /mi

Slowest Pace

8:34 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:14:01

96% of race

Time at Steady Pace

8:34

4% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:44 /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 mi10:57:4723:167:2923:16
7:29
#12152
10K
6.21 mi11:21:3847:077:3523:51
7:41
#12865
15K
9.32 mi11:45:181:10:477:3623:40
7:37
#12813
20K
12.43 mi12:08:451:34:147:3523:27
7:33
#12340
Half
13.11 mi12:13:471:39:167:345:02
7:23
#12273
25K
15.53 mi12:32:081:57:377:3418:21
7:34
#11935
30K
18.64 mi12:56:492:22:187:3824:41
7:57
#11688
20M
20.00 mi13:07:372:33:067:3910:48
7:57
#11516
21M
21.00 mi13:16:112:41:407:428:34
8:34
#11454
35K
21.75 mi13:21:572:47:267:425:46
7:42
#11384
23M
23.00 mi13:31:522:57:217:439:55
7:55
#11239
24M
24.00 mi13:39:383:05:077:437:46
7:46
#11114
40K
24.85 mi13:46:343:12:037:446:56
8:07
#11072
25.2M
25.20 mi13:49:223:14:517:442:48
8:07
#10968
Finish
26.22 mi13:57:063:22:357:447:44
7:35
#10912
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi121522876287612755(Top 45%)3308(Top 27%)3308(Top 60%)
10K6.21 mi3.10 mi12865-7133267-3913267-39113678(Top 48%)3761(Top 31%)3761(Top 69%)
15K9.32 mi3.11 mi12813+523279-123279-1212755(Top 45%)3308(Top 27%)3308(Top 60%)
20K12.43 mi3.11 mi12340+4733052+2273052+22711164(Top 39%)2565(Top 21%)2565(Top 47%)
Half13.11 mi0.68 mi12273+673024+283024+2810760(Top 38%)2325(Top 19%)2325(Top 43%)
25K15.53 mi2.42 mi11935+3382888+1362888+13610521(Top 37%)2338(Top 19%)2338(Top 43%)
30K18.64 mi3.11 mi11688+2472836+522836+5210998(Top 39%)2785(Top 23%)2785(Top 51%)
20M20.00 mi1.36 mi11516+1722781+552781+5510114(Top 36%)2489(Top 20%)2489(Top 46%)
21M21.00 mi1.00 mi11454+622793-122793-1210914(Top 38%)3051(Top 25%)3051(Top 56%)
35K21.75 mi0.75 mi11384+702779+142779+1410176(Top 36%)2694(Top 22%)2694(Top 49%)
23M23.00 mi1.25 mi11239+1452741+382741+389465(Top 33%)2485(Top 20%)2485(Top 45%)
24M24.00 mi1.00 mi11114+1252715+262715+269597(Top 34%)2603(Top 21%)2603(Top 48%)
40K24.85 mi0.85 mi11072+422729-142729-1411013(Top 39%)3430(Top 28%)3430(Top 63%)
25.2M25.20 mi0.35 mi10968+1042695+342695+346445(Top 23%)1448(Top 12%)1448(Top 26%)
Finish26.22 mi1.02 mi10912+562696-12696-19864(Top 35%)2923(Top 24%)2923(Top 53%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 45%
×21stories
+97ft-345ft

Overall

12755

Females

3308

F18-39

3308

5K→10K

3.1 - 6.2 mi

Top 48%
×5stories
+79ft-138ft

Overall

13678

Females

3761

F18-39

3761

10K→15K

6.2 - 9.3 mi

Top 45%
×3stories
+67ft-78ft

Overall

12755

Females

3308

F18-39

3308

15K→20K

9.3 - 12.4 mi

Top 39%
×5stories
+106ft-86ft

Overall

11164

Females

2565

F18-39

2565

20K→Half

12.4 - 13.1 mi

Top 38%
×2stories
+19ft-37ft

Overall

10760

Females

2325

F18-39

2325

Half→25K

13.1 - 15.5 mi

Top 37%
×4stories
+66ft-88ft

Overall

10521

Females

2338

F18-39

2338

25K→30K

15.5 - 18.6 mi

Top 39%
×9stories
+181ft-148ft

Overall

10998

Females

2785

F18-39

2785

30K→20M

18.6 - 20.0 mi

Top 36%
×5stories
+64ft-50ft

Overall

10114

Females

2489

F18-39

2489

20M→21M

20.0 - 21.0 mi

Top 38%
×8stories
+106ft-24ft

Overall

10914

Females

3051

F18-39

3051

21M→35K

21.0 - 21.8 mi

Top 36%
×7stories
+17ft-86ft

Overall

10176

Females

2694

F18-39

2694

35K→23M

21.8 - 23.0 mi

Top 33%
×5stories
+23ft-63ft

Overall

9465

Females

2485

F18-39

2485

23M→24M

23.0 - 24.0 mi

Top 34%
×6stories
+12ft-82ft

Overall

9597

Females

2603

F18-39

2603

24M→40K

24.0 - 24.9 mi

Top 39%
×1story
+6ft-20ft

Overall

11013

Females

3430

F18-39

3430

40K→25.2M

24.9 - 25.2 mi

Top 23%
×1story
+13ft-16ft

Overall

6445

Females

1448

F18-39

1448

25.2M→Finish

25.2 - 26.2 mi

Top 35%
×2stories
+22ft-21ft

Overall

9864

Females

2923

F18-39

2923

Passing Analysis

Category:
Athletes Passed
2619
Passed By
1379
Net Change
+1240
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12152
5K → 10K73786-713#12152#12865
10K → 15K222170+52#12865#12813
15K → 20K49724+473#12813#12340
20K → Half725+67#12340#12273
Half → 25K35618+338#12273#11935
25K → 30K34497+247#11935#11688
30K → 20M19523+172#11688#11516
20M → 21M13573+62#11516#11454
21M → 35K9727+70#11454#11384
35K → 23M18439+145#11384#11239
23M → 24M14924+125#11239#11114
24M → 40K9654+42#11114#11072
40K → 25.2M1084+104#11072#10968
25.2M → Finish9135+56#10968#10912
TOTALS26191379+1240
📊

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