Boston Marathon logo
BOSTON MARATHON 2025

Boguslaw Piekarczyk

Bib: 21673•M

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M60-64)
#0 / 1259
Top 48%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:09
Rank: #19402
Start → 5K
26:09 | 8:25/mi
10K· 6.21 mi
52:41
Rank: #19700 (-298)
5K → 10K
26:32 | 8:32/mi
15K· 9.32 mi
1:19:03
Rank: #19546 (+154)
10K → 15K
26:22 | 8:29/mi
20K· 12.43 mi
1:45:50
Rank: #19359 (+187)
15K → 20K
26:47 | 8:37/mi
Half· 13.11 mi
1:51:35
Rank: #19328 (+31)
20K → Half
5:45 | 8:26/mi
25K· 15.53 mi
2:12:42
Rank: #19170 (+158)
Half → 25K
21:07 | 8:43/mi
30K· 18.64 mi
2:40:51
Rank: #18908 (+262)
25K → 30K
28:09 | 9:04/mi
20M
2:53:05
Rank: #18749 (+159)
30K → 20M
12:14 | 9:00/mi
21M
3:03:03
Rank: #18711 (+38)
20M → 21M
9:58 | 9:58/mi
35K· 21.75 mi
3:09:27
Rank: #18613 (+98)
21M → 35K
6:24 | 8:33/mi
23M
3:20:42
Rank: #18430 (+183)
35K → 23M
11:15 | 8:59/mi
24M
3:29:39
Rank: #18362 (+68)
23M → 24M
8:57 | 8:57/mi
40K· 24.85 mi
3:37:27
Rank: #18311 (+51)
24M → 40K
7:48 | 9:07/mi
25.2M
3:41:05
Rank: #18335 (-24)
40K → 25.2M
3:38 | 10:32/mi
Finish· 26.22 mi
3:50:06
Rank: #18339 (-4)
25.2M → Finish
9:01 | 8:51/mi

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:51:35
Pace8:31 /mi
2nd Half
Distance13.11 mi
Time1:58:31
Pace9:02 /mi
📊Positive Split: 6.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:22:2826:098:2526:09
8:25
-
10K
6.21 mi11:49:0052:418:2926:32
8:32
+0:07
15K
9.32 mi12:15:221:19:038:2926:22
8:29
-0:03
20K
12.43 mi12:42:091:45:508:3126:47
8:37
+0:08
Half
13.11 mi12:47:541:51:358:315:45
8:26
-0:11
25K
15.53 mi13:09:012:12:428:3321:07
8:43
+0:17
30K
18.64 mi13:37:102:40:518:3828:09
9:04
+0:21
20M
20.00 mi13:49:242:53:058:3912:14
9:00
-0:04
21M
21.00 mi13:59:223:03:038:439:58
9:58
+0:58
35K
21.75 mi14:05:463:09:278:436:24
8:33
-1:25
23M
23.00 mi14:17:013:20:428:4411:15
8:59
+0:26
24M
24.00 mi14:25:583:29:398:448:57
8:57
-0:02
40K
24.85 mi14:33:463:37:278:457:48
9:07
+0:10
25.2M
25.20 mi14:37:243:41:058:463:38
10:32
+1:25
Finish
26.22 mi14:46:253:50:068:479:01
8:51
-1:41

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

8:25 /mi

Average Pace

8:47 /mi

Slowest Pace

10:32 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:31:12

40% of race

Time at Steady Pace

2:05:18

54% of race

Time at Slower Pace

13:36

6% of race

Average Pace: 8:47 /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 mi11:22:2826:098:2526:09
8:25
#19402
10K
6.21 mi11:49:0052:418:2926:32
8:32
#19700
15K
9.32 mi12:15:221:19:038:2926:22
8:29
#19546
20K
12.43 mi12:42:091:45:508:3126:47
8:37
#19359
Half
13.11 mi12:47:541:51:358:315:45
8:26
#19328
25K
15.53 mi13:09:012:12:428:3321:07
8:43
#19170
30K
18.64 mi13:37:102:40:518:3828:09
9:04
#18908
20M
20.00 mi13:49:242:53:058:3912:14
9:00
#18749
21M
21.00 mi13:59:223:03:038:439:58
9:58
#18711
35K
21.75 mi14:05:463:09:278:436:24
8:33
#18613
23M
23.00 mi14:17:013:20:428:4411:15
8:59
#18430
24M
24.00 mi14:25:583:29:398:448:57
8:57
#18362
40K
24.85 mi14:33:463:37:278:457:48
9:07
#18311
25.2M
25.20 mi14:37:243:41:058:463:38
10:32
#18335
Finish
26.22 mi14:46:253:50:068:479:01
8:51
#18339
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi19402122021220219231(Top 68%)12155(Top 75%)12155(Top 965%)
10K6.21 mi3.10 mi19700-29812342-14012342-14020024(Top 70%)12487(Top 78%)12487(Top 992%)
15K9.32 mi3.11 mi19546+15412286+5612286+5619231(Top 68%)12155(Top 75%)12155(Top 965%)
20K12.43 mi3.11 mi19359+18712191+9512191+9518962(Top 67%)12013(Top 75%)12013(Top 954%)
Half13.11 mi0.68 mi19328+3112173+1812173+1818703(Top 66%)11912(Top 74%)11912(Top 946%)
25K15.53 mi2.42 mi19170+15812105+6812105+6818437(Top 65%)11713(Top 73%)11713(Top 930%)
30K18.64 mi3.11 mi18908+26211960+14511960+14517975(Top 63%)11367(Top 71%)11367(Top 903%)
20M20.00 mi1.36 mi18749+15911865+9511865+9516797(Top 59%)10729(Top 67%)10729(Top 852%)
21M21.00 mi1.00 mi18711+3811814+5111814+5118160(Top 64%)11234(Top 70%)11234(Top 892%)
35K21.75 mi0.75 mi18613+9811761+5311761+5315795(Top 56%)10097(Top 63%)10097(Top 802%)
23M23.00 mi1.25 mi18430+18311656+10511656+10516158(Top 57%)10147(Top 63%)10147(Top 806%)
24M24.00 mi1.00 mi18362+6811596+6011596+6017103(Top 60%)10511(Top 65%)10511(Top 835%)
40K24.85 mi0.85 mi18311+5111543+5311543+5316959(Top 60%)10366(Top 64%)10366(Top 823%)
25.2M25.20 mi0.35 mi18335-2411536+711536+719098(Top 67%)11356(Top 71%)11356(Top 902%)
Finish26.22 mi1.02 mi18339-411523+1311523+1318272(Top 64%)11005(Top 68%)11005(Top 874%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 68%
×21stories
+97ft-345ft

Overall

19231

Males

12155

M60-64

12155

5K→10K

3.1 - 6.2 mi

Top 70%
×5stories
+79ft-138ft

Overall

20024

Males

12487

M60-64

12487

10K→15K

6.2 - 9.3 mi

Top 68%
×3stories
+67ft-78ft

Overall

19231

Males

12155

M60-64

12155

15K→20K

9.3 - 12.4 mi

Top 67%
×5stories
+106ft-86ft

Overall

18962

Males

12013

M60-64

12013

20K→Half

12.4 - 13.1 mi

Top 66%
×2stories
+19ft-37ft

Overall

18703

Males

11912

M60-64

11912

Half→25K

13.1 - 15.5 mi

Top 65%
×4stories
+66ft-88ft

Overall

18437

Males

11713

M60-64

11713

25K→30K

15.5 - 18.6 mi

Top 63%
×9stories
+181ft-148ft

Overall

17975

Males

11367

M60-64

11367

30K→20M

18.6 - 20.0 mi

Top 59%
×5stories
+64ft-50ft

Overall

16797

Males

10729

M60-64

10729

20M→21M

20.0 - 21.0 mi

Top 64%
×8stories
+106ft-24ft

Overall

18160

Males

11234

M60-64

11234

21M→35K

21.0 - 21.8 mi

Top 56%
×7stories
+17ft-86ft

Overall

15795

Males

10097

M60-64

10097

35K→23M

21.8 - 23.0 mi

Top 57%
×5stories
+23ft-63ft

Overall

16158

Males

10147

M60-64

10147

23M→24M

23.0 - 24.0 mi

Top 60%
×6stories
+12ft-82ft

Overall

17103

Males

10511

M60-64

10511

24M→40K

24.0 - 24.9 mi

Top 60%
×1story
+6ft-20ft

Overall

16959

Males

10366

M60-64

10366

40K→25.2M

24.9 - 25.2 mi

Top 67%
×1story
+13ft-16ft

Overall

19098

Males

11356

M60-64

11356

25.2M→Finish

25.2 - 26.2 mi

Top 64%
×2stories
+22ft-21ft

Overall

18272

Males

11005

M60-64

11005

Passing Analysis

Category:
Athletes Passed
2259
Passed By
1196
Net Change
+1063
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19402
5K → 10K143441-298#19402#19700
10K → 15K275121+154#19700#19546
15K → 20K296109+187#19546#19359
20K → Half4918+31#19359#19328
Half → 25K25092+158#19328#19170
25K → 30K34583+262#19170#18908
30K → 20M19233+159#18908#18749
20M → 21M12183+38#18749#18711
21M → 35K10810+98#18711#18613
35K → 23M20320+183#18613#18430
23M → 24M10739+68#18430#18362
24M → 40K9443+51#18362#18311
40K → 25.2M2044-24#18311#18335
25.2M → Finish5660-4#18335#18339
TOTALS22591196+1063
📊

Passing Visuals

Category:
Loading...

🔥Passing Intensity

Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing