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BOSTON MARATHON 2025

Mary Mcwilliams

Bib: 19326•F

TN

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 40%
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
7:48/mi
24:14
↑ 97↓ 3451.5%
10K· 6.21 mi
7:39/mi
48:01
↑ 79↓ 1380.4%
15K· 9.32 mi
7:41/mi
1:11:54
↑ 67↓ 78
20K· 12.43 mi
7:58/mi
1:36:40
↑ 106↓ 860.1%
Half· 13.11 mi
7:53/mi
1:42:03
↑ 19↓ 370.5%
25K· 15.53 mi
8:09/mi
2:01:49
↑ 66↓ 880.2%
30K· 18.64 mi
8:35/mi
2:28:28
↑ 181↓ 1480.2%
20M
9:10/mi
2:40:55
↑ 64↓ 500.2%
21M
9:33/mi
2:50:28
↑ 106↓ 241.6%
35K· 21.75 mi
9:05/mi
2:57:16
↑ 17↓ 861.7%
23M
8:54/mi
3:08:25
↑ 23↓ 630.6%
24M
8:45/mi
3:17:10
↓ 821.3%
40K· 24.85 mi
9:04/mi
3:24:55
↓ 200.3%
25.2M
9:46/mi
3:28:17
↑ 13↓ 160.2%
Finish· 26.22 mi
8:06/mi
3:36:32
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:42:03
Pace7:47 /mi
2nd Half
Distance13.11 mi
Time1:54:29
Pace8:44 /mi
📊Positive Split: 12.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:4324:147:4824:14
7:48
-
10K
6.21 mi11:40:3048:017:4423:47
7:39
-0:09
15K
9.32 mi12:04:231:11:547:4323:53
7:41
+0:02
20K
12.43 mi12:29:091:36:407:4724:46
7:58
+0:17
Half
13.11 mi12:34:321:42:037:475:23
7:53
-0:05
25K
15.53 mi12:54:182:01:497:5119:46
8:09
+0:16
30K
18.64 mi13:20:572:28:287:5826:39
8:35
+0:26
20M
20.00 mi13:33:242:40:558:0312:27
9:10
+0:35
21M
21.00 mi13:42:572:50:288:079:33
9:33
+0:23
35K
21.75 mi13:49:452:57:168:096:48
9:05
-0:28
23M
23.00 mi14:00:543:08:258:1211:09
8:54
-0:11
24M
24.00 mi14:09:393:17:108:138:45
8:45
-0:09
40K
24.85 mi14:17:243:24:558:157:45
9:04
+0:19
25.2M
25.20 mi14:20:463:28:178:163:22
9:46
+0:42
Finish
26.22 mi14:29:013:36:328:168:15
8:06
-1:40

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

7:39 /mi

Average Pace

8:16 /mi

Slowest Pace

9:46 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:10:04

60% of race

Time at Steady Pace

46:33

21% of race

Time at Slower Pace

39:55

18% of race

Average Pace: 8:15 /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 mi11:16:4324:147:4824:14
7:48
#14786
10K
6.21 mi11:40:3048:017:4423:47
7:39
#14120
15K
9.32 mi12:04:231:11:547:4323:53
7:41
#13863
20K
12.43 mi12:29:091:36:407:4724:46
7:58
#14072
Half
13.11 mi12:34:321:42:037:475:23
7:53
#14110
25K
15.53 mi12:54:182:01:497:5119:46
8:09
#14234
30K
18.64 mi13:20:572:28:287:5826:39
8:35
#14407
20M
20.00 mi13:33:242:40:558:0312:27
9:10
#14712
21M
21.00 mi13:42:572:50:288:079:33
9:33
#14789
35K
21.75 mi13:49:452:57:168:096:48
9:05
#14953
23M
23.00 mi14:00:543:08:258:1211:09
8:54
#14963
24M
24.00 mi14:09:393:17:108:138:45
8:45
#14988
40K
24.85 mi14:17:243:24:558:157:45
9:04
#15063
25.2M
25.20 mi14:20:463:28:178:163:22
9:46
#15072
Finish
26.22 mi14:29:013:36:328:168:15
8:06
#14976
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi147864407440713347(Top 47%)3657(Top 30%)3657(Top 67%)
10K6.21 mi3.10 mi14120+6664008+3994008+39913481(Top 47%)3658(Top 30%)3658(Top 67%)
15K9.32 mi3.11 mi13863+2573888+1203888+12013347(Top 47%)3657(Top 30%)3657(Top 67%)
20K12.43 mi3.11 mi14072-2094046-1584046-15814690(Top 52%)4482(Top 37%)4482(Top 82%)
Half13.11 mi0.68 mi14110-384067-214067-2114914(Top 53%)4591(Top 38%)4591(Top 84%)
25K15.53 mi2.42 mi14234-1244178-1114178-11114969(Top 53%)4725(Top 39%)4725(Top 86%)
30K18.64 mi3.11 mi14407-1734338-1604338-16015236(Top 54%)5040(Top 41%)5040(Top 92%)
20M20.00 mi1.36 mi14712-3054537-1994537-19917568(Top 62%)6465(Top 53%)6465(Top 118%)
21M21.00 mi1.00 mi14789-774602-654602-6516267(Top 57%)5863(Top 48%)5863(Top 107%)
35K21.75 mi0.75 mi14953-1644710-1084710-10818623(Top 66%)7274(Top 59%)7274(Top 133%)
23M23.00 mi1.25 mi14963-104746-364746-3615674(Top 55%)5716(Top 47%)5716(Top 105%)
24M24.00 mi1.00 mi14988-254797-514797-5115978(Top 56%)5931(Top 49%)5931(Top 108%)
40K24.85 mi0.85 mi15063-754875-784875-7816636(Top 59%)6406(Top 52%)6406(Top 117%)
25.2M25.20 mi0.35 mi15072-94894-194894-1915812(Top 56%)6020(Top 49%)6020(Top 110%)
Finish26.22 mi1.02 mi14976+964859+354859+3513509(Top 48%)4716(Top 39%)4716(Top 86%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 47%
×21story building
+97ft-345ft

Overall

13347

Females

3657

F18-39

3657

5K→10K

3.1 - 6.2 mi

Top 47%
×5story building
+79ft-138ft

Overall

13481

Females

3658

F18-39

3658

10K→15K

6.2 - 9.3 mi

Top 47%
×3story building
+67ft-78ft

Overall

13347

Females

3657

F18-39

3657

15K→20K

9.3 - 12.4 mi

Top 52%
×5story building
+106ft-86ft

Overall

14690

Females

4482

F18-39

4482

20K→Half

12.4 - 13.1 mi

Top 53%
×2story building
+19ft-37ft

Overall

14914

Females

4591

F18-39

4591

Half→25K

13.1 - 15.5 mi

Top 53%
×4story building
+66ft-88ft

Overall

14969

Females

4725

F18-39

4725

25K→30K

15.5 - 18.6 mi

Top 54%
×9story building
+181ft-148ft

Overall

15236

Females

5040

F18-39

5040

30K→20M

18.6 - 20.0 mi

Top 62%
×5story building
+64ft-50ft

Overall

17568

Females

6465

F18-39

6465

20M→21M

20.0 - 21.0 mi

Top 57%
×8story building
+106ft-24ft

Overall

16267

Females

5863

F18-39

5863

21M→35K

21.0 - 21.8 mi

Top 66%
×7story building
+17ft-86ft

Overall

18623

Females

7274

F18-39

7274

35K→23M

21.8 - 23.0 mi

Top 55%
×5story building
+23ft-63ft

Overall

15674

Females

5716

F18-39

5716

23M→24M

23.0 - 24.0 mi

Top 56%
×6story building
+12ft-82ft

Overall

15978

Females

5931

F18-39

5931

24M→40K

24.0 - 24.9 mi

Top 59%
×1story
+6ft-20ft

Overall

16636

Females

6406

F18-39

6406

40K→25.2M

24.9 - 25.2 mi

Top 56%
×1story
+13ft-16ft

Overall

15812

Females

6020

F18-39

6020

25.2M→Finish

25.2 - 26.2 mi

Top 48%
×2story building
+22ft-21ft

Overall

13509

Females

4716

F18-39

4716

Passing Analysis

Category:
Athletes Passed
2134
Passed By
2324
Net Change
-190
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14786
5K → 10K73771+666#14786#14120
10K → 15K33679+257#14120#13863
15K → 20K153362-209#13863#14072
20K → Half2260-38#14072#14110
Half → 25K127251-124#14110#14234
25K → 30K191364-173#14234#14407
30K → 20M64369-305#14407#14712
20M → 21M81158-77#14712#14789
21M → 35K31195-164#14789#14953
35K → 23M116126-10#14953#14963
23M → 24M75100-25#14963#14988
24M → 40K41116-75#14988#15063
40K → 25.2M3544-9#15063#15072
25.2M → Finish12529+96#15072#14976
TOTALS21342324-190
📊

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