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BOSTON MARATHON 2025

Christopher Czech

Bib: 7877•M

OR

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M40-44)
#0 / 2247
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
6:55/mi
21:28
↑ 97↓ 3451.5%
10K· 6.21 mi
7:12/mi
43:49
↑ 79↓ 1380.4%
15K· 9.32 mi
7:27/mi
1:06:58
↑ 67↓ 78
20K· 12.43 mi
7:42/mi
1:30:54
↑ 106↓ 860.1%
Half· 13.11 mi
7:43/mi
1:36:10
↑ 19↓ 370.5%
25K· 15.53 mi
8:23/mi
1:56:29
↑ 66↓ 880.2%
30K· 18.64 mi
9:27/mi
2:25:52
↑ 181↓ 1480.2%
20M
10:02/mi
2:39:30
↑ 64↓ 500.2%
21M
10:22/mi
2:49:52
↑ 106↓ 241.6%
35K· 21.75 mi
9:03/mi
2:56:38
↑ 17↓ 861.7%
23M
9:02/mi
3:07:57
↑ 23↓ 630.6%
24M
9:39/mi
3:17:36
↓ 821.3%
40K· 24.85 mi
9:35/mi
3:25:48
↓ 200.3%
25.2M
10:09/mi
3:29:18
↑ 13↓ 160.2%
Finish· 26.22 mi
8:27/mi
3:37:55
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:36:10
Pace7:20 /mi
2nd Half
Distance13.11 mi
Time2:01:45
Pace9:17 /mi
📊Positive Split: 26.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:29:3521:286:5521:28
6:55
-
10K
6.21 mi10:51:5643:497:0322:21
7:12
+0:17
15K
9.32 mi11:15:051:06:587:1123:09
7:27
+0:15
20K
12.43 mi11:39:011:30:547:1923:56
7:42
+0:15
Half
13.11 mi11:44:171:36:107:205:16
7:43
+0:01
25K
15.53 mi12:04:361:56:297:3020:19
8:23
+0:40
30K
18.64 mi12:33:592:25:527:4929:23
9:27
+1:04
20M
20.00 mi12:47:372:39:307:5813:38
10:02
+0:35
21M
21.00 mi12:57:592:49:528:0510:22
10:22
+0:20
35K
21.75 mi13:04:452:56:388:076:46
9:03
-1:19
23M
23.00 mi13:16:043:07:578:1011:19
9:02
-0:01
24M
24.00 mi13:25:433:17:368:149:39
9:39
+0:37
40K
24.85 mi13:33:553:25:488:178:12
9:35
-0:04
25.2M
25.20 mi13:37:253:29:188:183:30
10:09
+0:34
Finish
26.22 mi13:46:023:37:558:198:37
8:27
-1:42

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

6:55 /mi

Average Pace

8:19 /mi

Slowest Pace

10:22 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:05:06

57% of race

Time at Steady Pace

55:40

26% of race

Time at Slower Pace

37:09

17% of race

Average Pace: 8:19 /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 mi10:29:3521:286:5521:28
6:55
#7151
10K
6.21 mi10:51:5643:497:0322:21
7:12
#8273
15K
9.32 mi11:15:051:06:587:1123:09
7:27
#9203
20K
12.43 mi11:39:011:30:547:1923:56
7:42
#9995
Half
13.11 mi11:44:171:36:107:205:16
7:43
#10182
25K
15.53 mi12:04:361:56:297:3020:19
8:23
#11313
30K
18.64 mi12:33:592:25:527:4929:23
9:27
#13297
20M
20.00 mi12:47:372:39:307:5813:38
10:02
#14114
21M
21.00 mi12:57:592:49:528:0510:22
10:22
#14592
35K
21.75 mi13:04:452:56:388:076:46
9:03
#14730
23M
23.00 mi13:16:043:07:578:1011:19
9:02
#14819
24M
24.00 mi13:25:433:17:368:149:39
9:39
#15131
40K
24.85 mi13:33:553:25:488:178:12
9:35
#15314
25.2M
25.20 mi13:37:253:29:188:183:30
10:09
#15351
Finish
26.22 mi13:46:023:37:558:198:37
8:27
#15359
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi71516420642011339(Top 40%)8762(Top 54%)8762(Top 390%)
10K6.21 mi3.10 mi8273-11227159-7397159-7399437(Top 33%)7844(Top 49%)7844(Top 349%)
15K9.32 mi3.11 mi9203-9307700-5417700-54111339(Top 40%)8762(Top 54%)8762(Top 390%)
20K12.43 mi3.11 mi9995-7928103-4038103-40312436(Top 44%)9166(Top 57%)9166(Top 408%)
Half13.11 mi0.68 mi10182-1878197-948197-9413531(Top 48%)9719(Top 60%)9719(Top 433%)
25K15.53 mi2.42 mi11313-11318741-5448741-54416413(Top 58%)10825(Top 67%)10825(Top 482%)
30K18.64 mi3.11 mi13297-19849545-8049545-80419765(Top 70%)12180(Top 76%)12180(Top 542%)
20M20.00 mi1.36 mi14114-8179872-3279872-32721041(Top 74%)12598(Top 78%)12598(Top 561%)
21M21.00 mi1.00 mi14592-47810055-18310055-18319583(Top 69%)11854(Top 74%)11854(Top 528%)
35K21.75 mi0.75 mi14730-13810100-4510100-4518415(Top 65%)11219(Top 70%)11219(Top 499%)
23M23.00 mi1.25 mi14819-8910114-1410114-1416461(Top 58%)10270(Top 64%)10270(Top 457%)
24M24.00 mi1.00 mi15131-31210208-9410208-9420171(Top 71%)11943(Top 74%)11943(Top 532%)
40K24.85 mi0.85 mi15314-18310250-4210250-4219041(Top 67%)11335(Top 70%)11335(Top 504%)
25.2M25.20 mi0.35 mi15351-3710253-310253-317627(Top 62%)10650(Top 66%)10650(Top 474%)
Finish26.22 mi1.02 mi15359-810236+1710236+1715919(Top 56%)9901(Top 61%)9901(Top 441%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 40%
×21story building
+97ft-345ft

Overall

11339

Males

8762

M40-44

8762

5K→10K

3.1 - 6.2 mi

Top 33%
×5story building
+79ft-138ft

Overall

9437

Males

7844

M40-44

7844

10K→15K

6.2 - 9.3 mi

Top 40%
×3story building
+67ft-78ft

Overall

11339

Males

8762

M40-44

8762

15K→20K

9.3 - 12.4 mi

Top 44%
×5story building
+106ft-86ft

Overall

12436

Males

9166

M40-44

9166

20K→Half

12.4 - 13.1 mi

Top 48%
×2story building
+19ft-37ft

Overall

13531

Males

9719

M40-44

9719

Half→25K

13.1 - 15.5 mi

Top 58%
×4story building
+66ft-88ft

Overall

16413

Males

10825

M40-44

10825

25K→30K

15.5 - 18.6 mi

Top 70%
×9story building
+181ft-148ft

Overall

19765

Males

12180

M40-44

12180

30K→20M

18.6 - 20.0 mi

Top 74%
×5story building
+64ft-50ft

Overall

21041

Males

12598

M40-44

12598

20M→21M

20.0 - 21.0 mi

Top 69%
×8story building
+106ft-24ft

Overall

19583

Males

11854

M40-44

11854

21M→35K

21.0 - 21.8 mi

Top 65%
×7story building
+17ft-86ft

Overall

18415

Males

11219

M40-44

11219

35K→23M

21.8 - 23.0 mi

Top 58%
×5story building
+23ft-63ft

Overall

16461

Males

10270

M40-44

10270

23M→24M

23.0 - 24.0 mi

Top 71%
×6story building
+12ft-82ft

Overall

20171

Males

11943

M40-44

11943

24M→40K

24.0 - 24.9 mi

Top 67%
×1story
+6ft-20ft

Overall

19041

Males

11335

M40-44

11335

40K→25.2M

24.9 - 25.2 mi

Top 62%
×1story
+13ft-16ft

Overall

17627

Males

10650

M40-44

10650

25.2M→Finish

25.2 - 26.2 mi

Top 56%
×2story building
+22ft-21ft

Overall

15919

Males

9901

M40-44

9901

Passing Analysis

Category:
Athletes Passed
451
Passed By
8657
Net Change
-8208
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#7151
5K → 10K231145-1122#7151#8273
10K → 15K26956-930#8273#9203
15K → 20K50841-792#9203#9995
20K → Half3189-187#9995#10182
Half → 25K251156-1131#10182#11313
25K → 30K242008-1984#11313#13297
30K → 20M26843-817#13297#14114
20M → 21M32510-478#14114#14592
21M → 35K35173-138#14592#14730
35K → 23M86175-89#14730#14819
23M → 24M24336-312#14819#15131
24M → 40K28211-183#15131#15314
40K → 25.2M1956-37#15314#15351
25.2M → Finish5058-8#15351#15359
TOTALS4518657-8208
📊

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