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BOSTON MARATHON 2025

Nik Fiala

Bib: 4148•M

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 20%
Gender (Male)
#0 / 16105
Top 32%
Division (M18-39)
#0 / 5642
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:14
Rank: #3920
Start → 5K
20:14 | 6:31/mi
10K· 6.21 mi
40:32
Rank: #3942 (-22)
5K → 10K
20:18 | 6:32/mi
15K· 9.32 mi
1:02:14
Rank: #5033 (-1091)
10K → 15K
21:42 | 6:59/mi
20K· 12.43 mi
1:23:04
Rank: #4856 (+177)
15K → 20K
20:50 | 6:42/mi
Half· 13.11 mi
1:27:33
Rank: #4812 (+44)
20K → Half
4:29 | 6:34/mi
25K· 15.53 mi
1:44:13
Rank: #4875 (-63)
Half → 25K
16:40 | 6:52/mi
30K· 18.64 mi
2:06:47
Rank: #5175 (-300)
25K → 30K
22:34 | 7:16/mi
20M
2:17:17
Rank: #5485 (-310)
30K → 20M
10:30 | 7:44/mi
21M
2:25:21
Rank: #5594 (-109)
20M → 21M
8:04 | 8:04/mi
35K· 21.75 mi
2:30:26
Rank: #5509 (+85)
21M → 35K
5:05 | 6:48/mi
23M
2:39:56
Rank: #5523 (-14)
35K → 23M
9:30 | 7:35/mi
24M
2:47:38
Rank: #5600 (-77)
23M → 24M
7:42 | 7:42/mi
40K· 24.85 mi
2:54:24
Rank: #5665 (-65)
24M → 40K
6:46 | 7:55/mi
25.2M
2:57:22
Rank: #5688 (-23)
40K → 25.2M
2:58 | 8:36/mi
Finish· 26.22 mi
3:05:11
Rank: #5790 (-102)
25.2M → Finish
7:49 | 7:40/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:27:33
Pace6:41 /mi
2nd Half
Distance13.11 mi
Time1:37:38
Pace7:27 /mi
📊Positive Split: 11.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:3620:146:3120:14
6:31
-
10K
6.21 mi10:42:5440:326:3120:18
6:32
+0:01
15K
9.32 mi11:04:361:02:146:4121:42
6:59
+0:27
20K
12.43 mi11:25:261:23:046:4120:50
6:42
-0:17
Half
13.11 mi11:29:551:27:336:414:29
6:34
-0:08
25K
15.53 mi11:46:351:44:136:4316:40
6:52
+0:18
30K
18.64 mi12:09:092:06:476:4822:34
7:16
+0:24
20M
20.00 mi12:19:392:17:176:5210:30
7:44
+0:28
21M
21.00 mi12:27:432:25:216:558:04
8:04
+0:20
35K
21.75 mi12:32:482:30:266:555:05
6:48
-1:16
23M
23.00 mi12:42:182:39:566:579:30
7:35
+0:47
24M
24.00 mi12:50:002:47:386:597:42
7:42
+0:07
40K
24.85 mi12:56:462:54:247:016:46
7:55
+0:13
25.2M
25.20 mi12:59:442:57:227:022:58
8:36
+0:41
Finish
26.22 mi13:07:333:05:117:047:49
7:40
-0:56

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

6:31 /mi

Average Pace

7:04 /mi

Slowest Pace

8:36 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:27:36

47% of race

Time at Steady Pace

44:16

24% of race

Time at Slower Pace

53:19

29% of race

Average Pace: 7:04 /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 mi10:22:3620:146:3120:14
6:31
#3920
10K
6.21 mi10:42:5440:326:3120:18
6:32
#3942
15K
9.32 mi11:04:361:02:146:4121:42
6:59
#5033
20K
12.43 mi11:25:261:23:046:4120:50
6:42
#4856
Half
13.11 mi11:29:551:27:336:414:29
6:34
#4812
25K
15.53 mi11:46:351:44:136:4316:40
6:52
#4875
30K
18.64 mi12:09:092:06:476:4822:34
7:16
#5175
20M
20.00 mi12:19:392:17:176:5210:30
7:44
#5485
21M
21.00 mi12:27:432:25:216:558:04
8:04
#5594
35K
21.75 mi12:32:482:30:266:555:05
6:48
#5509
23M
23.00 mi12:42:182:39:566:579:30
7:35
#5523
24M
24.00 mi12:50:002:47:386:597:42
7:42
#5600
40K
24.85 mi12:56:462:54:247:016:46
7:55
#5665
25.2M
25.20 mi12:59:442:57:227:022:58
8:36
#5688
Finish
26.22 mi13:07:333:05:117:047:49
7:40
#5790
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi3920371037107501(Top 26%)6610(Top 41%)6610(Top 117%)
10K6.21 mi3.10 mi3942-223726-163726-163974(Top 14%)3741(Top 23%)3741(Top 66%)
15K9.32 mi3.11 mi5033-10914690-9644690-9647501(Top 26%)6610(Top 41%)6610(Top 117%)
20K12.43 mi3.11 mi4856+1774525+1654525+1654477(Top 16%)4172(Top 26%)4172(Top 74%)
Half13.11 mi0.68 mi4812+444484+414484+414167(Top 15%)3906(Top 24%)3906(Top 69%)
25K15.53 mi2.42 mi4875-634531-474531-475454(Top 19%)4958(Top 31%)4958(Top 88%)
30K18.64 mi3.11 mi5175-3004762-2314762-2316237(Top 22%)5474(Top 34%)5474(Top 97%)
20M20.00 mi1.36 mi5485-3105016-2545016-2548496(Top 30%)6714(Top 42%)6714(Top 119%)
21M21.00 mi1.00 mi5594-1095096-805096-807696(Top 27%)6079(Top 38%)6079(Top 108%)
35K21.75 mi0.75 mi5509+855017+795017+794083(Top 14%)3658(Top 23%)3658(Top 65%)
23M23.00 mi1.25 mi5523-145013+45013+47132(Top 25%)5647(Top 35%)5647(Top 100%)
24M24.00 mi1.00 mi5600-775057-445057-449069(Top 32%)6671(Top 41%)6671(Top 118%)
40K24.85 mi0.85 mi5665-655091-345091-349509(Top 33%)6783(Top 42%)6783(Top 120%)
25.2M25.20 mi0.35 mi5688-235104-135104-139301(Top 33%)6553(Top 41%)6553(Top 116%)
Finish26.22 mi1.02 mi5790-1025160-565160-5610422(Top 37%)7192(Top 45%)7192(Top 127%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 26%
×21stories
+97ft-345ft

Overall

7501

Males

6610

M18-39

6610

5K→10K

3.1 - 6.2 mi

Top 14%
×5stories
+79ft-138ft

Overall

3974

Males

3741

M18-39

3741

10K→15K

6.2 - 9.3 mi

Top 26%
×3stories
+67ft-78ft

Overall

7501

Males

6610

M18-39

6610

15K→20K

9.3 - 12.4 mi

Top 16%
×5stories
+106ft-86ft

Overall

4477

Males

4172

M18-39

4172

20K→Half

12.4 - 13.1 mi

Top 15%
×2stories
+19ft-37ft

Overall

4167

Males

3906

M18-39

3906

Half→25K

13.1 - 15.5 mi

Top 19%
×4stories
+66ft-88ft

Overall

5454

Males

4958

M18-39

4958

25K→30K

15.5 - 18.6 mi

Top 22%
×9stories
+181ft-148ft

Overall

6237

Males

5474

M18-39

5474

30K→20M

18.6 - 20.0 mi

Top 30%
×5stories
+64ft-50ft

Overall

8496

Males

6714

M18-39

6714

20M→21M

20.0 - 21.0 mi

Top 27%
×8stories
+106ft-24ft

Overall

7696

Males

6079

M18-39

6079

21M→35K

21.0 - 21.8 mi

Top 14%
×7stories
+17ft-86ft

Overall

4083

Males

3658

M18-39

3658

35K→23M

21.8 - 23.0 mi

Top 25%
×5stories
+23ft-63ft

Overall

7132

Males

5647

M18-39

5647

23M→24M

23.0 - 24.0 mi

Top 32%
×6stories
+12ft-82ft

Overall

9069

Males

6671

M18-39

6671

24M→40K

24.0 - 24.9 mi

Top 33%
×1story
+6ft-20ft

Overall

9509

Males

6783

M18-39

6783

40K→25.2M

24.9 - 25.2 mi

Top 33%
×1story
+13ft-16ft

Overall

9301

Males

6553

M18-39

6553

25.2M→Finish

25.2 - 26.2 mi

Top 37%
×2stories
+22ft-21ft

Overall

10422

Males

7192

M18-39

7192

Passing Analysis

Category:
Athletes Passed
950
Passed By
2820
Net Change
-1870
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3920
5K → 10K142164-22#3920#3942
10K → 15K71098-1091#3942#5033
15K → 20K22346+177#5033#4856
20K → Half528+44#4856#4812
Half → 25K86149-63#4812#4875
25K → 30K96396-300#4875#5175
30K → 20M17327-310#5175#5485
20M → 21M36145-109#5485#5594
21M → 35K927+85#5594#5509
35K → 23M8397-14#5509#5523
23M → 24M31108-77#5523#5600
24M → 40K3196-65#5600#5665
40K → 25.2M2346-23#5665#5688
25.2M → Finish31133-102#5688#5790
TOTALS9502820-1870
📊

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