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BOSTON MARATHON 2025

Krzysztof Antos

Bib: 9961•M

IL

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 31%
Gender (Male)
#0 / 16105
Top 44%
Masters (Masters Men)
#0 / 10463
Top 32%
Division (M45-49)
#0 / 2386
Top 45%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:04
Rank: #8657
Start → 5K
7:06/mi
22:04 split
10K· 6.21 mi
44:39
Rank: #9327 (-670)
5K → 10K
7:16/mi
22:35 split
15K· 9.32 mi
1:06:38
Rank: #8911 (+416)
10K → 15K
7:05/mi
21:59 split
20K· 12.43 mi
1:28:52
Rank: #8550 (+361)
15K → 20K
7:09/mi
22:14 split
Half· 13.11 mi
1:34:11
Rank: #8831 (-281)
20K → Half
7:48/mi
5:19 split
25K· 15.53 mi
1:51:43
Rank: #8605 (+226)
Half → 25K
7:14/mi
17:32 split
30K· 18.64 mi
2:15:17
Rank: #8489 (+116)
25K → 30K
7:35/mi
23:34 split
20M
2:25:49
Rank: #8456 (+33)
30K → 20M
7:45/mi
10:32 split
21M
2:34:07
Rank: #8454 (+2)
20M → 21M
8:18/mi
8:18 split
35K· 21.75 mi
2:39:47
Rank: #8443 (+11)
21M → 35K
7:34/mi
5:40 split
23M
2:49:38
Rank: #8423 (+20)
35K → 23M
7:52/mi
9:51 split
24M
2:57:22
Rank: #8427 (-4)
23M → 24M
7:44/mi
7:44 split
40K· 24.85 mi
3:04:07
Rank: #8432 (-5)
24M → 40K
7:54/mi
6:45 split
25.2M
3:07:14
Rank: #8490 (-58)
40K → 25.2M
9:02/mi
3:07 split
Finish· 26.22 mi
3:15:21
Rank: #8666 (-176)
25.2M → Finish
7:58/mi
8:07 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:34:11
Pace7:11 /mi
2nd Half
Distance13.11 mi
Time1:41:10
Pace7:43 /mi
📊Positive Split: 7.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:48:0022:047:0622:04
7:06
-
10K
6.21 mi11:10:3544:397:1122:35
7:16
+0:10
15K
9.32 mi11:32:341:06:387:0921:59
7:05
-0:11
20K
12.43 mi11:54:481:28:527:0922:14
7:09
+0:04
Half
13.11 mi12:00:071:34:117:115:19
7:48
+0:39
25K
15.53 mi12:17:391:51:437:1117:32
7:14
-0:34
30K
18.64 mi12:41:132:15:177:1523:34
7:35
+0:21
20M
20.00 mi12:51:452:25:497:1710:32
7:45
+0:10
21M
21.00 mi13:00:032:34:077:208:18
8:18
+0:33
35K
21.75 mi13:05:432:39:477:215:40
7:34
-0:44
23M
23.00 mi13:15:342:49:387:239:51
7:52
+0:18
24M
24.00 mi13:23:182:57:227:237:44
7:44
-0:08
40K
24.85 mi13:30:033:04:077:246:45
7:54
+0:10
25.2M
25.20 mi13:33:103:07:147:263:07
9:02
+1:08
Finish
26.22 mi13:41:173:15:217:278:07
7:58
-1:04

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

7:05 /mi

Average Pace

7:27 /mi

Slowest Pace

9:02 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:46:24

54% of race

Time at Steady Pace

1:17:32

40% of race

Time at Slower Pace

11:25

6% of race

Average Pace: 7:27 /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 mi10:48:0022:047:0622:04
7:06
#8657
10K
6.21 mi11:10:3544:397:1122:35
7:16
#9327
15K
9.32 mi11:32:341:06:387:0921:59
7:05
#8911
20K
12.43 mi11:54:481:28:527:0922:14
7:09
#8550
Half
13.11 mi12:00:071:34:117:115:19
7:48
#8831
25K
15.53 mi12:17:391:51:437:1117:32
7:14
#8605
30K
18.64 mi12:41:132:15:177:1523:34
7:35
#8489
20M
20.00 mi12:51:452:25:497:1710:32
7:45
#8456
21M
21.00 mi13:00:032:34:077:208:18
8:18
#8454
35K
21.75 mi13:05:432:39:477:215:40
7:34
#8443
23M
23.00 mi13:15:342:49:387:239:51
7:52
#8423
24M
24.00 mi13:23:182:57:227:237:44
7:44
#8427
40K
24.85 mi13:30:033:04:077:246:45
7:54
#8432
25.2M
25.20 mi13:33:103:07:147:263:07
9:02
#8490
Finish
26.22 mi13:41:173:15:217:278:07
7:58
#8666
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi8657741574158158(Top 29%)7039(Top 44%)7039(Top 295%)
10K6.21 mi3.10 mi9327-6707793-3787793-37810069(Top 35%)8179(Top 51%)8179(Top 343%)
15K9.32 mi3.11 mi8911+4167531+2627531+2628158(Top 29%)7039(Top 44%)7039(Top 295%)
20K12.43 mi3.11 mi8550+3617293+2387293+2387862(Top 28%)6785(Top 42%)6785(Top 284%)
Half13.11 mi0.68 mi8831-2817456-1637456-16314117(Top 50%)9929(Top 62%)9929(Top 416%)
25K15.53 mi2.42 mi8605+2267304+1527304+1527826(Top 28%)6655(Top 41%)6655(Top 279%)
30K18.64 mi3.11 mi8489+1167174+1307174+1308340(Top 29%)6792(Top 42%)6792(Top 285%)
20M20.00 mi1.36 mi8456+337123+517123+518705(Top 31%)6846(Top 43%)6846(Top 287%)
21M21.00 mi1.00 mi8454+27084+397084+399196(Top 32%)6926(Top 43%)6926(Top 290%)
35K21.75 mi0.75 mi8443+117051+337051+339126(Top 32%)6916(Top 43%)6916(Top 290%)
23M23.00 mi1.25 mi8423+207001+507001+509031(Top 32%)6731(Top 42%)6731(Top 282%)
24M24.00 mi1.00 mi8427-46967+346967+349307(Top 33%)6801(Top 42%)6801(Top 285%)
40K24.85 mi0.85 mi8432-56940+276940+279400(Top 33%)6740(Top 42%)6740(Top 282%)
25.2M25.20 mi0.35 mi8490-586952-126952-1211932(Top 42%)7943(Top 49%)7943(Top 333%)
Finish26.22 mi1.02 mi8666-1767031-797031-7912607(Top 44%)8325(Top 52%)8325(Top 349%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 29%
×21story building
+97ft-345ft

Overall

8158

Males

7039

M45-49

7039

5K→10K

3.1 - 6.2 mi

Top 35%
×5story building
+79ft-138ft

Overall

10069

Males

8179

M45-49

8179

10K→15K

6.2 - 9.3 mi

Top 29%
×3story building
+67ft-78ft

Overall

8158

Males

7039

M45-49

7039

15K→20K

9.3 - 12.4 mi

Top 28%
×5story building
+106ft-86ft

Overall

7862

Males

6785

M45-49

6785

20K→Half

12.4 - 13.1 mi

Top 50%
×2story building
+19ft-37ft

Overall

14117

Males

9929

M45-49

9929

Half→25K

13.1 - 15.5 mi

Top 28%
×4story building
+66ft-88ft

Overall

7826

Males

6655

M45-49

6655

25K→30K

15.5 - 18.6 mi

Top 29%
×9story building
+181ft-148ft

Overall

8340

Males

6792

M45-49

6792

30K→20M

18.6 - 20.0 mi

Top 31%
×5story building
+64ft-50ft

Overall

8705

Males

6846

M45-49

6846

20M→21M

20.0 - 21.0 mi

Top 32%
×8story building
+106ft-24ft

Overall

9196

Males

6926

M45-49

6926

21M→35K

21.0 - 21.8 mi

Top 32%
×7story building
+17ft-86ft

Overall

9126

Males

6916

M45-49

6916

35K→23M

21.8 - 23.0 mi

Top 32%
×5story building
+23ft-63ft

Overall

9031

Males

6731

M45-49

6731

23M→24M

23.0 - 24.0 mi

Top 33%
×6story building
+12ft-82ft

Overall

9307

Males

6801

M45-49

6801

24M→40K

24.0 - 24.9 mi

Top 33%
×1story
+6ft-20ft

Overall

9400

Males

6740

M45-49

6740

40K→25.2M

24.9 - 25.2 mi

Top 42%
×1story
+13ft-16ft

Overall

11932

Males

7943

M45-49

7943

25.2M→Finish

25.2 - 26.2 mi

Top 44%
×2story building
+22ft-21ft

Overall

12607

Males

8325

M45-49

8325

Passing Analysis

Category:
Athletes Passed
2003
Passed By
2012
Net Change
-9
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8657
5K → 10K49719-670#8657#9327
10K → 15K44529+416#9327#8911
15K → 20K38625+361#8911#8550
20K → Half3284-281#8550#8831
Half → 25K26539+226#8831#8605
25K → 30K264148+116#8605#8489
30K → 20M11481+33#8489#8456
20M → 21M9189+2#8456#8454
21M → 35K6756+11#8454#8443
35K → 23M11494+20#8443#8423
23M → 24M8488-4#8423#8427
24M → 40K7580-5#8427#8432
40K → 25.2M2179-58#8432#8490
25.2M → Finish25201-176#8490#8666
TOTALS20032012-9
📊

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