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BOSTON MARATHON 2025

Brian Liesveld

Bib: 16593•M

FL

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M45-49)
#0 / 2386
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
27:54
Rank: #22336
Start → 5K
8:59/mi
27:54 split
10K· 6.21 mi
56:37
Rank: #22855 (-519)
5K → 10K
9:15/mi
28:43 split
15K· 9.32 mi
1:25:50
Rank: #23150 (-295)
10K → 15K
9:24/mi
29:13 split
20K· 12.43 mi
1:54:40
Rank: #22897 (+253)
15K → 20K
9:17/mi
28:50 split
Half· 13.11 mi
2:01:01
Rank: #22899 (-2)
20K → Half
9:18/mi
6:21 split
25K· 15.53 mi
2:25:51
Rank: #23088 (-189)
Half → 25K
10:15/mi
24:50 split
30K· 18.64 mi
3:05:54
Rank: #24167 (-1079)
25K → 30K
12:53/mi
40:03 split
20M
3:24:55
Rank: #24580 (-413)
30K → 20M
14:00/mi
19:01 split
21M
3:37:33
Rank: #24588 (-8)
20M → 21M
12:38/mi
12:38 split
35K· 21.75 mi
3:46:16
Rank: #24635 (-47)
21M → 35K
11:39/mi
8:43 split
23M
3:59:27
Rank: #24510 (+125)
35K → 23M
10:32/mi
13:11 split
24M
4:09:45
Rank: #24430 (+80)
23M → 24M
10:18/mi
10:18 split
40K· 24.85 mi
4:19:18
Rank: #24403 (+27)
24M → 40K
11:10/mi
9:33 split
25.2M
4:23:42
Rank: #24406 (-3)
40K → 25.2M
12:46/mi
4:24 split
Finish· 26.22 mi
4:34:16
Rank: #24388 (+18)
25.2M → Finish
10:22/mi
10:34 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:01:01
Pace9:14 /mi
2nd Half
Distance13.11 mi
Time2:33:15
Pace11:41 /mi
📊Positive Split: 26.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:01:2227:548:5927:54
8:59
-
10K
6.21 mi11:30:0556:379:0728:43
9:15
+0:16
15K
9.32 mi11:59:181:25:509:1329:13
9:24
+0:09
20K
12.43 mi12:28:081:54:409:1428:50
9:17
-0:07
Half
13.11 mi12:34:292:01:019:146:21
9:18
+0:01
25K
15.53 mi12:59:192:25:519:2324:50
10:15
+0:57
30K
18.64 mi13:39:223:05:549:5840:03
12:53
+2:38
20M
20.00 mi13:58:233:24:5510:1519:01
14:00
+1:07
21M
21.00 mi14:11:013:37:3310:2212:38
12:38
-1:22
35K
21.75 mi14:19:443:46:1610:248:43
11:39
-0:59
23M
23.00 mi14:32:553:59:2710:2513:11
10:32
-1:07
24M
24.00 mi14:43:134:09:4510:2410:18
10:18
-0:14
40K
24.85 mi14:52:464:19:1810:269:33
11:10
+0:52
25.2M
25.20 mi14:57:104:23:4210:284:24
12:46
+1:36
Finish
26.22 mi15:07:444:34:1610:2810:34
10:22
-2:24

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

8:59 /mi

Average Pace

10:28 /mi

Slowest Pace

14:00 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:01:01

44% of race

Time at Steady Pace

58:53

21% of race

Time at Slower Pace

1:34:22

34% of race

Average Pace: 10:28 /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 mi11:01:2227:548:5927:54
8:59
#22336
10K
6.21 mi11:30:0556:379:0728:43
9:15
#22855
15K
9.32 mi11:59:181:25:509:1329:13
9:24
#23150
20K
12.43 mi12:28:081:54:409:1428:50
9:17
#22897
Half
13.11 mi12:34:292:01:019:146:21
9:18
#22899
25K
15.53 mi12:59:192:25:519:2324:50
10:15
#23088
30K
18.64 mi13:39:223:05:549:5840:03
12:53
#24167
20M
20.00 mi13:58:233:24:5510:1519:01
14:00
#24580
21M
21.00 mi14:11:013:37:3310:2212:38
12:38
#24588
35K
21.75 mi14:19:443:46:1610:248:43
11:39
#24635
23M
23.00 mi14:32:553:59:2710:2513:11
10:32
#24510
24M
24.00 mi14:43:134:09:4510:2410:18
10:18
#24430
40K
24.85 mi14:52:464:19:1810:269:33
11:10
#24403
25.2M
25.20 mi14:57:104:23:4210:284:24
12:46
#24406
Finish
26.22 mi15:07:444:34:1610:2810:34
10:22
#24388
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi22336134551345523483(Top 83%)14054(Top 87%)14054(Top 589%)
10K6.21 mi3.10 mi22855-51913721-26613721-26623347(Top 82%)13963(Top 87%)13963(Top 585%)
15K9.32 mi3.11 mi23150-29513872-15113872-15123483(Top 83%)14054(Top 87%)14054(Top 589%)
20K12.43 mi3.11 mi22897+25313767+10513767+10522215(Top 78%)13452(Top 84%)13452(Top 564%)
Half13.11 mi0.68 mi22899-213769-213769-222982(Top 81%)13790(Top 86%)13790(Top 578%)
25K15.53 mi2.42 mi23088-18913839-7013839-7023814(Top 84%)14108(Top 88%)14108(Top 591%)
30K18.64 mi3.11 mi24167-107914287-44814287-44826570(Top 94%)15240(Top 95%)15240(Top 639%)
20M20.00 mi1.36 mi24580-41314456-16914456-16927288(Top 96%)15519(Top 96%)15519(Top 650%)
21M21.00 mi1.00 mi24588-814440+1614440+1624574(Top 87%)14174(Top 88%)14174(Top 594%)
35K21.75 mi0.75 mi24635-4714459-1914459-1925331(Top 89%)14509(Top 90%)14509(Top 608%)
23M23.00 mi1.25 mi24510+12514380+7914380+7922097(Top 78%)12931(Top 80%)12931(Top 542%)
24M24.00 mi1.00 mi24430+8014336+4414336+4422247(Top 78%)12934(Top 80%)12934(Top 542%)
40K24.85 mi0.85 mi24403+2714321+1514321+1523490(Top 83%)13496(Top 84%)13496(Top 566%)
25.2M25.20 mi0.35 mi24406-314313+814313+824669(Top 87%)14104(Top 88%)14104(Top 591%)
Finish26.22 mi1.02 mi24388+1814284+2914284+2923962(Top 84%)13748(Top 85%)13748(Top 576%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 83%
×21story building
+97ft-345ft

Overall

23483

Males

14054

M45-49

14054

5K→10K

3.1 - 6.2 mi

Top 82%
×5story building
+79ft-138ft

Overall

23347

Males

13963

M45-49

13963

10K→15K

6.2 - 9.3 mi

Top 83%
×3story building
+67ft-78ft

Overall

23483

Males

14054

M45-49

14054

15K→20K

9.3 - 12.4 mi

Top 78%
×5story building
+106ft-86ft

Overall

22215

Males

13452

M45-49

13452

20K→Half

12.4 - 13.1 mi

Top 81%
×2story building
+19ft-37ft

Overall

22982

Males

13790

M45-49

13790

Half→25K

13.1 - 15.5 mi

Top 84%
×4story building
+66ft-88ft

Overall

23814

Males

14108

M45-49

14108

25K→30K

15.5 - 18.6 mi

Top 94%
×9story building
+181ft-148ft

Overall

26570

Males

15240

M45-49

15240

30K→20M

18.6 - 20.0 mi

Top 96%
×5story building
+64ft-50ft

Overall

27288

Males

15519

M45-49

15519

20M→21M

20.0 - 21.0 mi

Top 87%
×8story building
+106ft-24ft

Overall

24574

Males

14174

M45-49

14174

21M→35K

21.0 - 21.8 mi

Top 89%
×7story building
+17ft-86ft

Overall

25331

Males

14509

M45-49

14509

35K→23M

21.8 - 23.0 mi

Top 78%
×5story building
+23ft-63ft

Overall

22097

Males

12931

M45-49

12931

23M→24M

23.0 - 24.0 mi

Top 78%
×6story building
+12ft-82ft

Overall

22247

Males

12934

M45-49

12934

24M→40K

24.0 - 24.9 mi

Top 83%
×1story
+6ft-20ft

Overall

23490

Males

13496

M45-49

13496

40K→25.2M

24.9 - 25.2 mi

Top 87%
×1story
+13ft-16ft

Overall

24669

Males

14104

M45-49

14104

25.2M→Finish

25.2 - 26.2 mi

Top 84%
×2story building
+22ft-21ft

Overall

23962

Males

13748

M45-49

13748

Passing Analysis

Category:
Athletes Passed
1023
Passed By
3075
Net Change
-2052
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22336
5K → 10K88607-519#22336#22855
10K → 15K92387-295#22855#23150
15K → 20K30552+253#23150#22897
20K → Half2830-2#22897#22899
Half → 25K85274-189#22899#23088
25K → 30K121091-1079#23088#24167
30K → 20M9422-413#24167#24580
20M → 21M5664-8#24580#24588
21M → 35K1865-47#24588#24635
35K → 23M1305+125#24635#24510
23M → 24M9212+80#24510#24430
24M → 40K4720+27#24430#24403
40K → 25.2M1215-3#24403#24406
25.2M → Finish4931+18#24406#24388
TOTALS10233075-2052
📊

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