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BOSTON MARATHON 2025

Julie Fox-Williams

Bib: 14256•F

TN

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 48%
Gender (Female)
#0 / 12228
Top 34%
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
7:26/mi
23:07
↑ 97↓ 3451.5%
10K· 6.21 mi
7:32/mi
46:30
↑ 79↓ 1380.4%
15K· 9.32 mi
7:39/mi
1:10:17
↑ 67↓ 78
20K· 12.43 mi
7:52/mi
1:34:42
↑ 106↓ 860.1%
Half· 13.11 mi
7:39/mi
1:39:55
↑ 19↓ 370.5%
25K· 15.53 mi
7:56/mi
1:59:09
↑ 66↓ 880.2%
30K· 18.64 mi
8:19/mi
2:24:59
↑ 181↓ 1480.2%
20M
8:47/mi
2:36:55
↑ 64↓ 500.2%
21M
9:27/mi
2:46:22
↑ 106↓ 241.6%
35K· 21.75 mi
8:32/mi
2:52:45
↑ 17↓ 861.7%
23M
8:52/mi
3:03:51
↑ 23↓ 630.6%
24M
8:28/mi
3:12:19
↓ 821.3%
40K· 24.85 mi
8:35/mi
3:19:39
↓ 200.3%
25.2M
9:37/mi
3:22:58
↑ 13↓ 160.2%
Finish· 26.22 mi
8:32/mi
3:31:40
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:39:55
Pace7:37 /mi
2nd Half
Distance13.11 mi
Time1:51:45
Pace8:31 /mi
📊Positive Split: 11.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:53:0323:077:2623:07
7:26
-
10K
6.21 mi11:16:2646:307:2923:23
7:32
+0:06
15K
9.32 mi11:40:131:10:177:3223:47
7:39
+0:07
20K
12.43 mi12:04:381:34:427:3724:25
7:52
+0:13
Half
13.11 mi12:09:511:39:557:375:13
7:39
-0:13
25K
15.53 mi12:29:051:59:097:4019:14
7:56
+0:17
30K
18.64 mi12:54:552:24:597:4725:50
8:19
+0:23
20M
20.00 mi13:06:512:36:557:5111:56
8:47
+0:28
21M
21.00 mi13:16:182:46:227:559:27
9:27
+0:40
35K
21.75 mi13:22:412:52:457:576:23
8:32
-0:55
23M
23.00 mi13:33:473:03:518:0011:06
8:52
+0:20
24M
24.00 mi13:42:153:12:198:018:28
8:28
-0:24
40K
24.85 mi13:49:353:19:398:027:20
8:35
+0:07
25.2M
25.20 mi13:52:543:22:588:033:19
9:37
+1:02
Finish
26.22 mi14:01:363:31:408:058:42
8:32
-1:05

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

7:26 /mi

Average Pace

8:05 /mi

Slowest Pace

9:37 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:59:09

56% of race

Time at Steady Pace

1:08:39

32% of race

Time at Slower Pace

23:52

11% of race

Average Pace: 8:04 /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 mi10:53:0323:077:2623:07
7:26
#11725
10K
6.21 mi11:16:2646:307:2923:23
7:32
#12001
15K
9.32 mi11:40:131:10:177:3223:47
7:39
#12339
20K
12.43 mi12:04:381:34:427:3724:25
7:52
#12672
Half
13.11 mi12:09:511:39:557:375:13
7:39
#12686
25K
15.53 mi12:29:051:59:097:4019:14
7:56
#12761
30K
18.64 mi12:54:552:24:597:4725:50
8:19
#12884
20M
20.00 mi13:06:512:36:557:5111:56
8:47
#13093
21M
21.00 mi13:16:182:46:227:559:27
9:27
#13268
35K
21.75 mi13:22:412:52:457:576:23
8:32
#13359
23M
23.00 mi13:33:473:03:518:0011:06
8:52
#13456
24M
24.00 mi13:42:153:12:198:018:28
8:28
#13499
40K
24.85 mi13:49:353:19:398:027:20
8:35
#13506
25.2M
25.20 mi13:52:543:22:588:033:19
9:37
#13531
Finish
26.22 mi14:01:363:31:408:058:42
8:32
#13659
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi117252646264613107(Top 46%)3509(Top 29%)3509(Top 64%)
10K6.21 mi3.10 mi12001-2762817-1712817-17112361(Top 44%)3013(Top 25%)3013(Top 55%)
15K9.32 mi3.11 mi12339-3383020-2033020-20313107(Top 46%)3509(Top 29%)3509(Top 64%)
20K12.43 mi3.11 mi12672-3333252-2323252-23213768(Top 48%)3967(Top 32%)3967(Top 73%)
Half13.11 mi0.68 mi12686-143267-153267-1513055(Top 46%)3541(Top 29%)3541(Top 65%)
25K15.53 mi2.42 mi12761-753343-763343-7613383(Top 47%)3872(Top 32%)3872(Top 71%)
30K18.64 mi3.11 mi12884-1233475-1323475-13213605(Top 48%)4150(Top 34%)4150(Top 76%)
20M20.00 mi1.36 mi13093-2093632-1573632-15715561(Top 55%)5330(Top 44%)5330(Top 97%)
21M21.00 mi1.00 mi13268-1753759-1273759-12715857(Top 56%)5626(Top 46%)5626(Top 103%)
35K21.75 mi0.75 mi13359-913833-743833-7415675(Top 55%)5593(Top 46%)5593(Top 102%)
23M23.00 mi1.25 mi13456-973932-993932-9915486(Top 55%)5588(Top 46%)5588(Top 102%)
24M24.00 mi1.00 mi13499-433975-433975-4314307(Top 50%)4976(Top 41%)4976(Top 91%)
40K24.85 mi0.85 mi13506-74001-264001-2613942(Top 49%)4928(Top 40%)4928(Top 90%)
25.2M25.20 mi0.35 mi13531-254030-294030-2915195(Top 53%)5636(Top 46%)5636(Top 103%)
Finish26.22 mi1.02 mi13659-1284130-1004130-10016461(Top 58%)6271(Top 51%)6271(Top 115%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 46%
×21story building
+97ft-345ft

Overall

13107

Females

3509

F18-39

3509

5K→10K

3.1 - 6.2 mi

Top 44%
×5story building
+79ft-138ft

Overall

12361

Females

3013

F18-39

3013

10K→15K

6.2 - 9.3 mi

Top 46%
×3story building
+67ft-78ft

Overall

13107

Females

3509

F18-39

3509

15K→20K

9.3 - 12.4 mi

Top 48%
×5story building
+106ft-86ft

Overall

13768

Females

3967

F18-39

3967

20K→Half

12.4 - 13.1 mi

Top 46%
×2story building
+19ft-37ft

Overall

13055

Females

3541

F18-39

3541

Half→25K

13.1 - 15.5 mi

Top 47%
×4story building
+66ft-88ft

Overall

13383

Females

3872

F18-39

3872

25K→30K

15.5 - 18.6 mi

Top 48%
×9story building
+181ft-148ft

Overall

13605

Females

4150

F18-39

4150

30K→20M

18.6 - 20.0 mi

Top 55%
×5story building
+64ft-50ft

Overall

15561

Females

5330

F18-39

5330

20M→21M

20.0 - 21.0 mi

Top 56%
×8story building
+106ft-24ft

Overall

15857

Females

5626

F18-39

5626

21M→35K

21.0 - 21.8 mi

Top 55%
×7story building
+17ft-86ft

Overall

15675

Females

5593

F18-39

5593

35K→23M

21.8 - 23.0 mi

Top 55%
×5story building
+23ft-63ft

Overall

15486

Females

5588

F18-39

5588

23M→24M

23.0 - 24.0 mi

Top 50%
×6story building
+12ft-82ft

Overall

14307

Females

4976

F18-39

4976

24M→40K

24.0 - 24.9 mi

Top 49%
×1story
+6ft-20ft

Overall

13942

Females

4928

F18-39

4928

40K→25.2M

24.9 - 25.2 mi

Top 53%
×1story
+13ft-16ft

Overall

15195

Females

5636

F18-39

5636

25.2M→Finish

25.2 - 26.2 mi

Top 58%
×2story building
+22ft-21ft

Overall

16461

Females

6271

F18-39

6271

Passing Analysis

Category:
Athletes Passed
1139
Passed By
3073
Net Change
-1934
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11725
5K → 10K145421-276#11725#12001
10K → 15K85423-338#12001#12339
15K → 20K103436-333#12339#12672
20K → Half2438-14#12672#12686
Half → 25K140215-75#12686#12761
25K → 30K187310-123#12761#12884
30K → 20M75284-209#12884#13093
20M → 21M49224-175#13093#13268
21M → 35K42133-91#13268#13359
35K → 23M76173-97#13359#13456
23M → 24M71114-43#13456#13499
24M → 40K7784-7#13499#13506
40K → 25.2M3257-25#13506#13531
25.2M → Finish33161-128#13531#13659
TOTALS11393073-1934
📊

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