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BOSTON MARATHON 2025

William Fredericks

Bib: 349•M

CO

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 0.6%
Gender (Male)
#0 / 16105
Top 1.0%
Division (M18-39)
#0 / 5642
Top 3%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
16:31
Rank: #76
Start → 5K
16:31 | 5:19/mi
10K· 6.21 mi
33:01
Rank: #90 (-14)
5K → 10K
16:30 | 5:19/mi
15K· 9.32 mi
49:44
Rank: #87 (+3)
10K → 15K
16:43 | 5:23/mi
20K· 12.43 mi
1:06:29
Rank: #88 (-1)
15K → 20K
16:45 | 5:23/mi
Half· 13.11 mi
1:10:02
Rank: #84 (+4)
20K → Half
3:33 | 5:12/mi
25K· 15.53 mi
1:23:11
Rank: #85 (-1)
Half → 25K
13:09 | 5:25/mi
30K· 18.64 mi
1:40:39
Rank: #85
25K → 30K
17:28 | 5:37/mi
20M
1:48:33
Rank: #88 (-3)
30K → 20M
7:54 | 5:49/mi
21M
1:54:52
Rank: #94 (-6)
20M → 21M
6:19 | 6:19/mi
35K· 21.75 mi
1:59:15
Rank: #100 (-6)
21M → 35K
4:23 | 5:52/mi
23M
2:07:19
Rank: #117 (-17)
35K → 23M
8:04 | 6:27/mi
24M
2:13:48
Rank: #127 (-10)
23M → 24M
6:29 | 6:29/mi
40K· 24.85 mi
2:19:33
Rank: #147 (-20)
24M → 40K
5:45 | 6:44/mi
25.2M
2:22:09
Rank: #151 (-4)
40K → 25.2M
2:36 | 7:32/mi
Finish· 26.22 mi
2:29:02
Rank: #174 (-23)
25.2M → Finish
6:53 | 6:45/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:10:02
Pace5:21 /mi
2nd Half
Distance13.11 mi
Time1:19:00
Pace6:02 /mi
📊Positive Split: 12.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:16:3516:315:1916:31
5:19
-
10K
6.21 mi10:33:0533:015:1916:30
5:19
0:00
15K
9.32 mi10:49:4849:445:2016:43
5:23
+0:04
20K
12.43 mi11:06:331:06:295:2116:45
5:23
0:00
Half
13.11 mi11:10:061:10:025:213:33
5:12
-0:11
25K
15.53 mi11:23:151:23:115:2113:09
5:25
+0:13
30K
18.64 mi11:40:431:40:395:2417:28
5:37
+0:12
20M
20.00 mi11:48:371:48:335:267:54
5:49
+0:12
21M
21.00 mi11:54:561:54:525:286:19
6:19
+0:30
35K
21.75 mi11:59:191:59:155:294:23
5:52
-0:27
23M
23.00 mi12:07:232:07:195:328:04
6:27
+0:35
24M
24.00 mi12:13:522:13:485:356:29
6:29
+0:02
40K
24.85 mi12:19:372:19:335:375:45
6:44
+0:15
25.2M
25.20 mi12:22:132:22:095:382:36
7:32
+0:48
Finish
26.22 mi12:29:062:29:025:416:53
6:45
-0:47

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

5:12 /mi

Average Pace

5:41 /mi

Slowest Pace

7:32 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:23:11

56% of race

Time at Steady Pace

29:45

20% of race

Time at Slower Pace

36:06

24% of race

Average Pace: 5:41 /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 mi10:16:3516:315:1916:31
5:19
#76
10K
6.21 mi10:33:0533:015:1916:30
5:19
#90
15K
9.32 mi10:49:4849:445:2016:43
5:23
#87
20K
12.43 mi11:06:331:06:295:2116:45
5:23
#88
Half
13.11 mi11:10:061:10:025:213:33
5:12
#84
25K
15.53 mi11:23:151:23:115:2113:09
5:25
#85
30K
18.64 mi11:40:431:40:395:2417:28
5:37
#85
20M
20.00 mi11:48:371:48:335:267:54
5:49
#88
21M
21.00 mi11:54:561:54:525:286:19
6:19
#94
35K
21.75 mi11:59:191:59:155:294:23
5:52
#100
23M
23.00 mi12:07:232:07:195:328:04
6:27
#117
24M
24.00 mi12:13:522:13:485:356:29
6:29
#127
40K
24.85 mi12:19:372:19:335:375:45
6:44
#147
25.2M
25.20 mi12:22:132:22:095:382:36
7:32
#151
Finish
26.22 mi12:29:062:29:025:416:53
6:45
#174
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi76767695(Top 0.3%)76(Top 0.5%)76(Top 1%)
10K6.21 mi3.10 mi90-1472+472+484(Top 0.3%)65(Top 0.4%)65(Top 1%)
15K9.32 mi3.11 mi87+368+468+495(Top 0.3%)76(Top 0.5%)76(Top 1%)
20K12.43 mi3.11 mi88-170-270-288(Top 0.3%)74(Top 0.5%)74(Top 1%)
Half13.11 mi0.68 mi84+469+169+155(Top 0.2%)54(Top 0.3%)54(Top 1.0%)
25K15.53 mi2.42 mi85-170-170-185(Top 0.3%)79(Top 0.5%)79(Top 1%)
30K18.64 mi3.11 mi857070126(Top 0.4%)113(Top 0.7%)113(Top 2%)
20M20.00 mi1.36 mi88-373-373-3195(Top 0.7%)177(Top 1%)177(Top 3%)
21M21.00 mi1.00 mi94-680-780-7379(Top 1%)356(Top 2%)356(Top 6%)
35K21.75 mi0.75 mi100-685-585-5443(Top 2%)411(Top 3%)411(Top 7%)
23M23.00 mi1.25 mi117-17100-15100-151259(Top 4%)1184(Top 7%)1184(Top 21%)
24M24.00 mi1.00 mi127-10107-7107-71941(Top 7%)1798(Top 11%)1798(Top 32%)
40K24.85 mi0.85 mi147-20126-19126-192444(Top 9%)2226(Top 14%)2226(Top 39%)
25.2M25.20 mi0.35 mi151-4130-4130-43480(Top 12%)3024(Top 19%)3024(Top 54%)
Finish26.22 mi1.02 mi174-23153-23153-234177(Top 15%)3554(Top 22%)3554(Top 63%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 0.3%
×21stories
+97ft-345ft

Overall

95

Males

76

M18-39

76

5K→10K

3.1 - 6.2 mi

Top 0.3%
×5stories
+79ft-138ft

Overall

84

Males

65

M18-39

65

10K→15K

6.2 - 9.3 mi

Top 0.3%
×3stories
+67ft-78ft

Overall

95

Males

76

M18-39

76

15K→20K

9.3 - 12.4 mi

Top 0.3%
×5stories
+106ft-86ft

Overall

88

Males

74

M18-39

74

20K→Half

12.4 - 13.1 mi

Top 0.2%
×2stories
+19ft-37ft

Overall

55

Males

54

M18-39

54

Half→25K

13.1 - 15.5 mi

Top 0.3%
×4stories
+66ft-88ft

Overall

85

Males

79

M18-39

79

25K→30K

15.5 - 18.6 mi

Top 0.4%
×9stories
+181ft-148ft

Overall

126

Males

113

M18-39

113

30K→20M

18.6 - 20.0 mi

Top 0.7%
×5stories
+64ft-50ft

Overall

195

Males

177

M18-39

177

20M→21M

20.0 - 21.0 mi

Top 1%
×8stories
+106ft-24ft

Overall

379

Males

356

M18-39

356

21M→35K

21.0 - 21.8 mi

Top 2%
×7stories
+17ft-86ft

Overall

443

Males

411

M18-39

411

35K→23M

21.8 - 23.0 mi

Top 4%
×5stories
+23ft-63ft

Overall

1259

Males

1184

M18-39

1184

23M→24M

23.0 - 24.0 mi

Top 7%
×6stories
+12ft-82ft

Overall

1941

Males

1798

M18-39

1798

24M→40K

24.0 - 24.9 mi

Top 9%
×1story
+6ft-20ft

Overall

2444

Males

2226

M18-39

2226

40K→25.2M

24.9 - 25.2 mi

Top 12%
×1story
+13ft-16ft

Overall

3480

Males

3024

M18-39

3024

25.2M→Finish

25.2 - 26.2 mi

Top 15%
×2stories
+22ft-21ft

Overall

4177

Males

3554

M18-39

3554

Passing Analysis

Category:
Athletes Passed
22
Passed By
120
Net Change
-98
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#76
5K → 10K620-14#76#90
10K → 15K52+3#90#87
15K → 20K12-1#87#88
20K → Half51+4#88#84
Half → 25K12-1#84#85
25K → 30K220#85#85
30K → 20M03-3#85#88
20M → 21M28-6#88#94
21M → 35K06-6#94#100
35K → 23M017-17#100#117
23M → 24M010-10#117#127
24M → 40K020-20#127#147
40K → 25.2M04-4#147#151
25.2M → Finish023-23#151#174
TOTALS22120-98
📊

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