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BOSTON MARATHON 2025

Adam Czelusta

Bib: 12077•M

TX

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 30%
Gender (Male)
#0 / 16105
Top 43%
Masters (Masters Men)
#0 / 10463
Top 30%
Division (M50-54)
#0 / 1996
Top 28%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:52
Rank: #10927
Start → 5K
22:52 | 7:22/mi
10K· 6.21 mi
45:50
Rank: #11004 (-77)
5K → 10K
22:58 | 7:24/mi
15K· 9.32 mi
1:08:50
Rank: #10920 (+84)
10K → 15K
23:00 | 7:24/mi
20K· 12.43 mi
1:31:43
Rank: #10585 (+335)
15K → 20K
22:53 | 7:22/mi
Half· 13.11 mi
1:36:44
Rank: #10557 (+28)
20K → Half
5:01 | 7:21/mi
25K· 15.53 mi
1:54:39
Rank: #10272 (+285)
Half → 25K
17:55 | 7:23/mi
30K· 18.64 mi
2:17:41
Rank: #9585 (+687)
25K → 30K
23:02 | 7:25/mi
20M
2:27:59
Rank: #9366 (+219)
30K → 20M
10:18 | 7:35/mi
21M
2:35:54
Rank: #9181 (+185)
20M → 21M
7:55 | 7:55/mi
35K· 21.75 mi
2:41:21
Rank: #9082 (+99)
21M → 35K
5:27 | 7:17/mi
23M
2:50:24
Rank: #8724 (+358)
35K → 23M
9:03 | 7:14/mi
24M
2:57:41
Rank: #8555 (+169)
23M → 24M
7:17 | 7:17/mi
40K· 24.85 mi
3:04:06
Rank: #8422 (+133)
24M → 40K
6:25 | 7:30/mi
25.2M
3:06:54
Rank: #8364 (+58)
40K → 25.2M
2:48 | 8:07/mi
Finish· 26.22 mi
3:14:30
Rank: #8382 (-18)
25.2M → Finish
7:36 | 7:27/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:36:44
Pace7:23 /mi
2nd Half
Distance13.11 mi
Time1:37:46
Pace7:27 /mi
📊Positive Split: 1.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:2122:527:2222:52
7:22
-
10K
6.21 mi11:13:1945:507:2322:58
7:24
+0:02
15K
9.32 mi11:36:191:08:507:2323:00
7:24
0:00
20K
12.43 mi11:59:121:31:437:2322:53
7:22
-0:02
Half
13.11 mi12:04:131:36:447:235:01
7:21
-0:01
25K
15.53 mi12:22:081:54:397:2317:55
7:23
+0:02
30K
18.64 mi12:45:102:17:417:2323:02
7:25
+0:02
20M
20.00 mi12:55:282:27:597:2410:18
7:35
+0:10
21M
21.00 mi13:03:232:35:547:257:55
7:55
+0:20
35K
21.75 mi13:08:502:41:217:255:27
7:17
-0:38
23M
23.00 mi13:17:532:50:247:259:03
7:14
-0:03
24M
24.00 mi13:25:102:57:417:247:17
7:17
+0:03
40K
24.85 mi13:31:353:04:067:246:25
7:30
+0:13
25.2M
25.20 mi13:34:233:06:547:252:48
8:07
+0:37
Finish
26.22 mi13:41:593:14:307:257:36
7:27
-0:40

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

7:14 /mi

Average Pace

7:25 /mi

Slowest Pace

8:07 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:11:42

99% of race

Time at Steady Pace

2:48

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:25 /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 mi10:50:2122:527:2222:52
7:22
#10927
10K
6.21 mi11:13:1945:507:2322:58
7:24
#11004
15K
9.32 mi11:36:191:08:507:2323:00
7:24
#10920
20K
12.43 mi11:59:121:31:437:2322:53
7:22
#10585
Half
13.11 mi12:04:131:36:447:235:01
7:21
#10557
25K
15.53 mi12:22:081:54:397:2317:55
7:23
#10272
30K
18.64 mi12:45:102:17:417:2323:02
7:25
#9585
20M
20.00 mi12:55:282:27:597:2410:18
7:35
#9366
21M
21.00 mi13:03:232:35:547:257:55
7:55
#9181
35K
21.75 mi13:08:502:41:217:255:27
7:17
#9082
23M
23.00 mi13:17:532:50:247:259:03
7:14
#8724
24M
24.00 mi13:25:102:57:417:247:17
7:17
#8555
40K
24.85 mi13:31:353:04:067:246:25
7:30
#8422
25.2M
25.20 mi13:34:233:06:547:252:48
8:07
#8364
Finish
26.22 mi13:41:593:14:307:257:36
7:27
#8382
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi109278652865210884(Top 38%)8532(Top 53%)8532(Top 427%)
10K6.21 mi3.10 mi11004-778669-178669-1711114(Top 39%)8710(Top 54%)8710(Top 436%)
15K9.32 mi3.11 mi10920+848610+598610+5910884(Top 38%)8532(Top 53%)8532(Top 427%)
20K12.43 mi3.11 mi10585+3358412+1988412+1989578(Top 34%)7777(Top 48%)7777(Top 390%)
Half13.11 mi0.68 mi10557+288401+118401+1110396(Top 37%)8209(Top 51%)8209(Top 411%)
25K15.53 mi2.42 mi10272+2858207+1948207+1949051(Top 32%)7367(Top 46%)7367(Top 369%)
30K18.64 mi3.11 mi9585+6877788+4197788+4197136(Top 25%)6054(Top 38%)6054(Top 303%)
20M20.00 mi1.36 mi9366+2197638+1507638+1507534(Top 27%)6163(Top 38%)6163(Top 309%)
21M21.00 mi1.00 mi9181+1857502+1367502+1366883(Top 24%)5617(Top 35%)5617(Top 281%)
35K21.75 mi0.75 mi9082+997424+787424+787136(Top 25%)5788(Top 36%)5788(Top 290%)
23M23.00 mi1.25 mi8724+3587180+2447180+2445058(Top 18%)4365(Top 27%)4365(Top 219%)
24M24.00 mi1.00 mi8555+1697050+1307050+1306316(Top 22%)5116(Top 32%)5116(Top 256%)
40K24.85 mi0.85 mi8422+1336932+1186932+1186828(Top 24%)5333(Top 33%)5333(Top 267%)
25.2M25.20 mi0.35 mi8364+586879+536879+536597(Top 23%)5126(Top 32%)5126(Top 257%)
Finish26.22 mi1.02 mi8382-186861+186861+188867(Top 31%)6367(Top 40%)6367(Top 319%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 38%
×21stories
+97ft-345ft

Overall

10884

Males

8532

M50-54

8532

5K→10K

3.1 - 6.2 mi

Top 39%
×5stories
+79ft-138ft

Overall

11114

Males

8710

M50-54

8710

10K→15K

6.2 - 9.3 mi

Top 38%
×3stories
+67ft-78ft

Overall

10884

Males

8532

M50-54

8532

15K→20K

9.3 - 12.4 mi

Top 34%
×5stories
+106ft-86ft

Overall

9578

Males

7777

M50-54

7777

20K→Half

12.4 - 13.1 mi

Top 37%
×2stories
+19ft-37ft

Overall

10396

Males

8209

M50-54

8209

Half→25K

13.1 - 15.5 mi

Top 32%
×4stories
+66ft-88ft

Overall

9051

Males

7367

M50-54

7367

25K→30K

15.5 - 18.6 mi

Top 25%
×9stories
+181ft-148ft

Overall

7136

Males

6054

M50-54

6054

30K→20M

18.6 - 20.0 mi

Top 27%
×5stories
+64ft-50ft

Overall

7534

Males

6163

M50-54

6163

20M→21M

20.0 - 21.0 mi

Top 24%
×8stories
+106ft-24ft

Overall

6883

Males

5617

M50-54

5617

21M→35K

21.0 - 21.8 mi

Top 25%
×7stories
+17ft-86ft

Overall

7136

Males

5788

M50-54

5788

35K→23M

21.8 - 23.0 mi

Top 18%
×5stories
+23ft-63ft

Overall

5058

Males

4365

M50-54

4365

23M→24M

23.0 - 24.0 mi

Top 22%
×6stories
+12ft-82ft

Overall

6316

Males

5116

M50-54

5116

24M→40K

24.0 - 24.9 mi

Top 24%
×1story
+6ft-20ft

Overall

6828

Males

5333

M50-54

5333

40K→25.2M

24.9 - 25.2 mi

Top 23%
×1story
+13ft-16ft

Overall

6597

Males

5126

M50-54

5126

25.2M→Finish

25.2 - 26.2 mi

Top 31%
×2stories
+22ft-21ft

Overall

8867

Males

6367

M50-54

6367

Passing Analysis

Category:
Athletes Passed
3220*
Passed By
675
Net Change
+2545
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10927
5K → 10K226303-77#10927#11004
10K → 15K214130+84#11004#10920
15K → 20K36328+335#10920#10585
20K → Half4618+28#10585#10557
Half → 25K31732+285#10557#10272
25K → 30K694*7+687#10272#9585
30K → 20M23314+219#9585#9366
20M → 21M19914+185#9366#9181
21M → 35K1067+99#9181#9082
35K → 23M3624+358#9082#8724
23M → 24M18011+169#8724#8555
24M → 40K15017+133#8555#8422
40K → 25.2M6810+58#8422#8364
25.2M → Finish6280-18#8364#8382
TOTALS3220*675+2545

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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