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BOSTON MARATHON 2025

Robert Blaszak

Bib: 6578•M

MI

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 25%
Gender (Male)
#0 / 16105
Top 38%
Masters (Masters Men)
#0 / 10463
Top 25%
Division (M40-44)
#0 / 2247
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:28
Rank: #9718
Start → 5K
22:28 | 7:14/mi
10K· 6.21 mi
44:33
Rank: #9187 (+531)
5K → 10K
22:05 | 7:06/mi
15K· 9.32 mi
1:06:40
Rank: #8928 (+259)
10K → 15K
22:07 | 7:07/mi
20K· 12.43 mi
1:29:00
Rank: #8649 (+279)
15K → 20K
22:20 | 7:11/mi
Half· 13.11 mi
1:33:50
Rank: #8604 (+45)
20K → Half
4:50 | 7:05/mi
25K· 15.53 mi
1:51:15
Rank: #8365 (+239)
Half → 25K
17:25 | 7:11/mi
30K· 18.64 mi
2:14:27
Rank: #8125 (+240)
25K → 30K
23:12 | 7:28/mi
20M
2:24:42
Rank: #8016 (+109)
30K → 20M
10:15 | 7:33/mi
21M
2:32:39
Rank: #7877 (+139)
20M → 21M
7:57 | 7:57/mi
35K· 21.75 mi
2:38:05
Rank: #7816 (+61)
21M → 35K
5:26 | 7:16/mi
23M
2:47:20
Rank: #7640 (+176)
35K → 23M
9:15 | 7:23/mi
24M
2:54:31
Rank: #7501 (+139)
23M → 24M
7:11 | 7:11/mi
40K· 24.85 mi
3:00:43
Rank: #7360 (+141)
24M → 40K
6:12 | 7:15/mi
25.2M
3:03:21
Rank: #7290 (+70)
40K → 25.2M
2:38 | 7:38/mi
Finish· 26.22 mi
3:10:38
Rank: #7232 (+58)
25.2M → Finish
7:17 | 7:09/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:33:50
Pace7:09 /mi
2nd Half
Distance13.11 mi
Time1:36:48
Pace7:23 /mi
📊Positive Split: 3.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:29:1222:287:1422:28
7:14
-
10K
6.21 mi10:51:1744:337:1022:05
7:06
-0:08
15K
9.32 mi11:13:241:06:407:0922:07
7:07
+0:01
20K
12.43 mi11:35:441:29:007:1022:20
7:11
+0:04
Half
13.11 mi11:40:341:33:507:094:50
7:05
-0:06
25K
15.53 mi11:57:591:51:157:1017:25
7:11
+0:06
30K
18.64 mi12:21:112:14:277:1323:12
7:28
+0:17
20M
20.00 mi12:31:262:24:427:1410:15
7:33
+0:05
21M
21.00 mi12:39:232:32:397:167:57
7:57
+0:24
35K
21.75 mi12:44:492:38:057:165:26
7:16
-0:41
23M
23.00 mi12:54:042:47:207:179:15
7:23
+0:07
24M
24.00 mi13:01:152:54:317:167:11
7:11
-0:12
40K
24.85 mi13:07:273:00:437:166:12
7:15
+0:04
25.2M
25.20 mi13:10:053:03:217:172:38
7:38
+0:23
Finish
26.22 mi13:17:223:10:387:177:17
7:09
-0:29

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

7:17 /mi

Slowest Pace

7:57 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:02:41

96% of race

Time at Steady Pace

7:57

4% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:16 /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 mi10:29:1222:287:1422:28
7:14
#9718
10K
6.21 mi10:51:1744:337:1022:05
7:06
#9187
15K
9.32 mi11:13:241:06:407:0922:07
7:07
#8928
20K
12.43 mi11:35:441:29:007:1022:20
7:11
#8649
Half
13.11 mi11:40:341:33:507:094:50
7:05
#8604
25K
15.53 mi11:57:591:51:157:1017:25
7:11
#8365
30K
18.64 mi12:21:112:14:277:1323:12
7:28
#8125
20M
20.00 mi12:31:262:24:427:1410:15
7:33
#8016
21M
21.00 mi12:39:232:32:397:167:57
7:57
#7877
35K
21.75 mi12:44:492:38:057:165:26
7:16
#7816
23M
23.00 mi12:54:042:47:207:179:15
7:23
#7640
24M
24.00 mi13:01:152:54:317:167:11
7:11
#7501
40K
24.85 mi13:07:273:00:437:166:12
7:15
#7360
25.2M
25.20 mi13:10:053:03:217:172:38
7:38
#7290
Finish
26.22 mi13:17:223:10:387:177:17
7:09
#7232
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi9718800780078446(Top 30%)7205(Top 45%)7205(Top 321%)
10K6.21 mi3.10 mi9187+5317712+2957712+2958723(Top 31%)7426(Top 46%)7426(Top 330%)
15K9.32 mi3.11 mi8928+2597540+1727540+1728446(Top 30%)7205(Top 45%)7205(Top 321%)
20K12.43 mi3.11 mi8649+2797356+1847356+1848086(Top 28%)6920(Top 43%)6920(Top 308%)
Half13.11 mi0.68 mi8604+457313+437313+438109(Top 29%)6948(Top 43%)6948(Top 309%)
25K15.53 mi2.42 mi8365+2397152+1617152+1617462(Top 26%)6418(Top 40%)6418(Top 286%)
30K18.64 mi3.11 mi8125+2406944+2086944+2087507(Top 26%)6279(Top 39%)6279(Top 279%)
20M20.00 mi1.36 mi8016+1096843+1016843+1017271(Top 26%)5995(Top 37%)5995(Top 267%)
21M21.00 mi1.00 mi7877+1396728+1156728+1157055(Top 25%)5706(Top 35%)5706(Top 254%)
35K21.75 mi0.75 mi7816+616668+606668+606951(Top 24%)5661(Top 35%)5661(Top 252%)
23M23.00 mi1.25 mi7640+1766509+1596509+1595970(Top 21%)4948(Top 31%)4948(Top 220%)
24M24.00 mi1.00 mi7501+1396387+1226387+1225707(Top 20%)4732(Top 29%)4732(Top 211%)
40K24.85 mi0.85 mi7360+1416269+1186269+1185345(Top 19%)4446(Top 28%)4446(Top 198%)
25.2M25.20 mi0.35 mi7290+706215+546215+544025(Top 14%)3441(Top 21%)3441(Top 153%)
Finish26.22 mi1.02 mi7232+586153+626153+626666(Top 23%)5126(Top 32%)5126(Top 228%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 30%
×21stories
+97ft-345ft

Overall

8446

Males

7205

M40-44

7205

5K→10K

3.1 - 6.2 mi

Top 31%
×5stories
+79ft-138ft

Overall

8723

Males

7426

M40-44

7426

10K→15K

6.2 - 9.3 mi

Top 30%
×3stories
+67ft-78ft

Overall

8446

Males

7205

M40-44

7205

15K→20K

9.3 - 12.4 mi

Top 28%
×5stories
+106ft-86ft

Overall

8086

Males

6920

M40-44

6920

20K→Half

12.4 - 13.1 mi

Top 29%
×2stories
+19ft-37ft

Overall

8109

Males

6948

M40-44

6948

Half→25K

13.1 - 15.5 mi

Top 26%
×4stories
+66ft-88ft

Overall

7462

Males

6418

M40-44

6418

25K→30K

15.5 - 18.6 mi

Top 26%
×9stories
+181ft-148ft

Overall

7507

Males

6279

M40-44

6279

30K→20M

18.6 - 20.0 mi

Top 26%
×5stories
+64ft-50ft

Overall

7271

Males

5995

M40-44

5995

20M→21M

20.0 - 21.0 mi

Top 25%
×8stories
+106ft-24ft

Overall

7055

Males

5706

M40-44

5706

21M→35K

21.0 - 21.8 mi

Top 24%
×7stories
+17ft-86ft

Overall

6951

Males

5661

M40-44

5661

35K→23M

21.8 - 23.0 mi

Top 21%
×5stories
+23ft-63ft

Overall

5970

Males

4948

M40-44

4948

23M→24M

23.0 - 24.0 mi

Top 20%
×6stories
+12ft-82ft

Overall

5707

Males

4732

M40-44

4732

24M→40K

24.0 - 24.9 mi

Top 19%
×1story
+6ft-20ft

Overall

5345

Males

4446

M40-44

4446

40K→25.2M

24.9 - 25.2 mi

Top 14%
×1story
+13ft-16ft

Overall

4025

Males

3441

M40-44

3441

25.2M→Finish

25.2 - 26.2 mi

Top 23%
×2stories
+22ft-21ft

Overall

6666

Males

5126

M40-44

5126

Passing Analysis

Category:
Athletes Passed
2910
Passed By
424
Net Change
+2486
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9718
5K → 10K58453+531#9718#9187
10K → 15K31758+259#9187#8928
15K → 20K32142+279#8928#8649
20K → Half5813+45#8649#8604
Half → 25K25920+239#8604#8365
25K → 30K31575+240#8365#8125
30K → 20M15647+109#8125#8016
20M → 21M16728+139#8016#7877
21M → 35K8726+61#7877#7816
35K → 23M18913+176#7816#7640
23M → 24M15213+139#7640#7501
24M → 40K15413+141#7501#7360
40K → 25.2M711+70#7360#7290
25.2M → Finish8022+58#7290#7232
TOTALS2910424+2486
📊

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