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BOSTON MARATHON 2025

Shannon Mccullough

Bib: 14545•F

PA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 33%
Gender (Female)
#0 / 12228
Top 16%
Division (F18-39)
#0 / 5469
Top 29%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:36
Rank: #10115
Start → 5K
22:36 | 7:16/mi
10K· 6.21 mi
45:29
Rank: #10508 (-393)
5K → 10K
22:53 | 7:22/mi
15K· 9.32 mi
1:08:17
Rank: #10448 (+60)
10K → 15K
22:48 | 7:20/mi
20K· 12.43 mi
1:31:21
Rank: #10319 (+129)
15K → 20K
23:04 | 7:25/mi
Half· 13.11 mi
1:36:24
Rank: #10334 (-15)
20K → Half
5:03 | 7:24/mi
25K· 15.53 mi
1:54:35
Rank: #10244 (+90)
Half → 25K
18:11 | 7:30/mi
30K· 18.64 mi
2:18:45
Rank: #10086 (+158)
25K → 30K
24:10 | 7:47/mi
20M
2:29:30
Rank: #9999
30K → 20M
10:45 | 7:55/mi
21M
2:37:48
Rank: #9929
20M → 21M
8:18 | 8:18/mi
35K· 21.75 mi
2:43:32
Rank: #9910 (+19)
21M → 35K
5:44 | 7:40/mi
23M
2:53:29
Rank: #9879 (+31)
35K → 23M
9:57 | 7:57/mi
24M
3:01:08
Rank: #9788 (+91)
23M → 24M
7:39 | 7:39/mi
40K· 24.85 mi
3:07:41
Rank: #9667 (+121)
24M → 40K
6:33 | 7:40/mi
25.2M
3:10:30
Rank: #9600 (+67)
40K → 25.2M
2:49 | 8:10/mi
Finish· 26.22 mi
3:17:47
Rank: #9444 (+156)
25.2M → Finish
7:17 | 7:09/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:36:24
Pace7:21 /mi
2nd Half
Distance13.11 mi
Time1:41:23
Pace7:44 /mi
📊Positive Split: 5.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:3622:367:1622:36
7:16
-
10K
6.21 mi11:15:2945:297:1922:53
7:22
+0:06
15K
9.32 mi11:38:171:08:177:2022:48
7:20
-0:02
20K
12.43 mi12:01:211:31:217:2123:04
7:25
+0:05
Half
13.11 mi12:06:241:36:247:215:03
7:24
-0:01
25K
15.53 mi12:24:351:54:357:2318:11
7:30
+0:06
30K
18.64 mi12:48:452:18:457:2724:10
7:47
+0:17
20M
20.00 mi12:59:302:29:307:2810:45
7:55
+0:08
21M
21.00 mi13:07:482:37:487:318:18
8:18
+0:23
35K
21.75 mi13:13:322:43:327:315:44
7:40
-0:38
23M
23.00 mi13:23:292:53:297:339:57
7:57
+0:17
24M
24.00 mi13:31:083:01:087:337:39
7:39
-0:18
40K
24.85 mi13:37:413:07:417:336:33
7:40
+0:01
25.2M
25.20 mi13:40:303:10:307:342:49
8:10
+0:30
Finish
26.22 mi13:47:473:17:477:337:17
7:09
-1:01

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

7:09 /mi

Average Pace

7:33 /mi

Slowest Pace

8:18 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:45:58

84% of race

Time at Steady Pace

31:49

16% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:33 /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 mi10:52:3622:367:1622:36
7:16
#10115
10K
6.21 mi11:15:2945:297:1922:53
7:22
#10508
15K
9.32 mi11:38:171:08:177:2022:48
7:20
#10448
20K
12.43 mi12:01:211:31:217:2123:04
7:25
#10319
Half
13.11 mi12:06:241:36:247:215:03
7:24
#10334
25K
15.53 mi12:24:351:54:357:2318:11
7:30
#10244
30K
18.64 mi12:48:452:18:457:2724:10
7:47
#10086
20M
20.00 mi12:59:302:29:307:2810:45
7:55
#9999
21M
21.00 mi13:07:482:37:487:318:18
8:18
#9929
35K
21.75 mi13:13:322:43:327:315:44
7:40
#9910
23M
23.00 mi13:23:292:53:297:339:57
7:57
#9879
24M
24.00 mi13:31:083:01:087:337:39
7:39
#9788
40K
24.85 mi13:37:413:07:417:336:33
7:40
#9667
25.2M
25.20 mi13:40:303:10:307:342:49
8:10
#9600
Finish
26.22 mi13:47:473:17:477:337:17
7:09
#9444
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi101151859185910325(Top 36%)2036(Top 17%)2036(Top 37%)
10K6.21 mi3.10 mi10508-3932056-1972056-19710885(Top 38%)2245(Top 18%)2245(Top 41%)
15K9.32 mi3.11 mi10448+602051+52051+510325(Top 36%)2036(Top 17%)2036(Top 37%)
20K12.43 mi3.11 mi10319+1292019+322019+3210120(Top 36%)2014(Top 16%)2014(Top 37%)
Half13.11 mi0.68 mi10334-152032-132032-1310929(Top 38%)2371(Top 19%)2371(Top 43%)
25K15.53 mi2.42 mi10244+902022+102022+109964(Top 35%)2088(Top 17%)2088(Top 38%)
30K18.64 mi3.11 mi10086+1582002+202002+209775(Top 34%)2177(Top 18%)2177(Top 40%)
20M20.00 mi1.36 mi9999+871986+161986+169832(Top 35%)2357(Top 19%)2357(Top 43%)
21M21.00 mi1.00 mi9929+701993-71993-79237(Top 33%)2261(Top 18%)2261(Top 41%)
35K21.75 mi0.75 mi9910+192016-232016-239812(Top 35%)2504(Top 20%)2504(Top 46%)
23M23.00 mi1.25 mi9879+312053-372053-379642(Top 34%)2561(Top 21%)2561(Top 47%)
24M24.00 mi1.00 mi9788+912039+142039+148801(Top 31%)2227(Top 18%)2227(Top 41%)
40K24.85 mi0.85 mi9667+1212011+282011+287859(Top 28%)1924(Top 16%)1924(Top 35%)
25.2M25.20 mi0.35 mi9600+672001+102001+106960(Top 25%)1632(Top 13%)1632(Top 30%)
Finish26.22 mi1.02 mi9444+1561964+371964+376730(Top 24%)1551(Top 13%)1551(Top 28%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 36%
×21stories
+97ft-345ft

Overall

10325

Females

2036

F18-39

2036

5K→10K

3.1 - 6.2 mi

Top 38%
×5stories
+79ft-138ft

Overall

10885

Females

2245

F18-39

2245

10K→15K

6.2 - 9.3 mi

Top 36%
×3stories
+67ft-78ft

Overall

10325

Females

2036

F18-39

2036

15K→20K

9.3 - 12.4 mi

Top 36%
×5stories
+106ft-86ft

Overall

10120

Females

2014

F18-39

2014

20K→Half

12.4 - 13.1 mi

Top 38%
×2stories
+19ft-37ft

Overall

10929

Females

2371

F18-39

2371

Half→25K

13.1 - 15.5 mi

Top 35%
×4stories
+66ft-88ft

Overall

9964

Females

2088

F18-39

2088

25K→30K

15.5 - 18.6 mi

Top 34%
×9stories
+181ft-148ft

Overall

9775

Females

2177

F18-39

2177

30K→20M

18.6 - 20.0 mi

Top 35%
×5stories
+64ft-50ft

Overall

9832

Females

2357

F18-39

2357

20M→21M

20.0 - 21.0 mi

Top 33%
×8stories
+106ft-24ft

Overall

9237

Females

2261

F18-39

2261

21M→35K

21.0 - 21.8 mi

Top 35%
×7stories
+17ft-86ft

Overall

9812

Females

2504

F18-39

2504

35K→23M

21.8 - 23.0 mi

Top 34%
×5stories
+23ft-63ft

Overall

9642

Females

2561

F18-39

2561

23M→24M

23.0 - 24.0 mi

Top 31%
×6stories
+12ft-82ft

Overall

8801

Females

2227

F18-39

2227

24M→40K

24.0 - 24.9 mi

Top 28%
×1story
+6ft-20ft

Overall

7859

Females

1924

F18-39

1924

40K→25.2M

24.9 - 25.2 mi

Top 25%
×1story
+13ft-16ft

Overall

6960

Females

1632

F18-39

1632

25.2M→Finish

25.2 - 26.2 mi

Top 24%
×2stories
+22ft-21ft

Overall

6730

Females

1551

F18-39

1551

Passing Analysis

Category:
Athletes Passed
1783
Passed By
1264
Net Change
+514
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10115
5K → 10K119511-393#10115#10508
10K → 15K196136+60#10508#10448
15K → 20K234104+129#10448#10319
20K → Half2944-15#10319#10334
Half → 25K195105+90#10334#10244
25K → 30K306147+158#10244#10086
21M → 35K7656+19#9929#9910
35K → 23M11886+31#9910#9879
23M → 24M12534+91#9879#9788
24M → 40K13413+121#9788#9667
40K → 25.2M7710+67#9667#9600
25.2M → Finish17418+156#9600#9444
TOTALS17831264+514
📊

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