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BOSTON MARATHON 2025

Konrad Grzegorzewski

Bib: 11345•M

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 33%
Division (M45-49)
#0 / 2386
Top 47%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:27
Rank: #9661
Start → 5K
22:27 | 7:14/mi
10K· 6.21 mi
44:56
Rank: #9722 (-61)
5K → 10K
22:29 | 7:14/mi
15K· 9.32 mi
1:07:30
Rank: #9677 (+45)
10K → 15K
22:34 | 7:16/mi
20K· 12.43 mi
1:30:05
Rank: #9399 (+278)
15K → 20K
22:35 | 7:16/mi
Half· 13.11 mi
1:34:57
Rank: #9361 (+38)
20K → Half
4:52 | 7:08/mi
25K· 15.53 mi
1:52:35
Rank: #9089 (+272)
Half → 25K
17:38 | 7:16/mi
30K· 18.64 mi
2:16:23
Rank: #8978 (+111)
25K → 30K
23:48 | 7:40/mi
20M
2:26:52
Rank: #8890 (+88)
30K → 20M
10:29 | 7:43/mi
21M
2:35:08
Rank: #8870 (+20)
20M → 21M
8:16 | 8:16/mi
35K· 21.75 mi
2:40:51
Rank: #8870
21M → 35K
5:43 | 7:38/mi
23M
2:50:40
Rank: #8805 (+65)
35K → 23M
9:49 | 7:50/mi
24M
2:58:33
Rank: #8864 (-59)
23M → 24M
7:53 | 7:53/mi
40K· 24.85 mi
3:05:18
Rank: #8845 (+19)
24M → 40K
6:45 | 7:54/mi
25.2M
3:08:17
Rank: #8841 (+4)
40K → 25.2M
2:59 | 8:39/mi
Finish· 26.22 mi
3:16:09
Rank: #8904 (-63)
25.2M → Finish
7:52 | 7:43/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:34:57
Pace7:15 /mi
2nd Half
Distance13.11 mi
Time1:41:12
Pace7:43 /mi
📊Positive Split: 6.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:48:5822:277:1422:27
7:14
-
10K
6.21 mi11:11:2744:567:1422:29
7:14
0:00
15K
9.32 mi11:34:011:07:307:1522:34
7:16
+0:02
20K
12.43 mi11:56:361:30:057:1522:35
7:16
0:00
Half
13.11 mi12:01:281:34:577:154:52
7:08
-0:08
25K
15.53 mi12:19:061:52:357:1517:38
7:16
+0:08
30K
18.64 mi12:42:542:16:237:1923:48
7:40
+0:24
20M
20.00 mi12:53:232:26:527:2110:29
7:43
+0:03
21M
21.00 mi13:01:392:35:087:238:16
8:16
+0:33
35K
21.75 mi13:07:222:40:517:245:43
7:38
-0:38
23M
23.00 mi13:17:112:50:407:259:49
7:50
+0:12
24M
24.00 mi13:25:042:58:337:267:53
7:53
+0:03
40K
24.85 mi13:31:493:05:187:276:45
7:54
+0:01
25.2M
25.20 mi13:34:483:08:177:282:59
8:39
+0:45
Finish
26.22 mi13:42:403:16:097:297:52
7:43
-0:56

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

7:08 /mi

Average Pace

7:29 /mi

Slowest Pace

8:39 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:52:35

57% of race

Time at Steady Pace

57:41

29% of race

Time at Slower Pace

25:53

13% of race

Average Pace: 7:29 /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 mi10:48:5822:277:1422:27
7:14
#9661
10K
6.21 mi11:11:2744:567:1422:29
7:14
#9722
15K
9.32 mi11:34:011:07:307:1522:34
7:16
#9677
20K
12.43 mi11:56:361:30:057:1522:35
7:16
#9399
Half
13.11 mi12:01:281:34:577:154:52
7:08
#9361
25K
15.53 mi12:19:061:52:357:1517:38
7:16
#9089
30K
18.64 mi12:42:542:16:237:1923:48
7:40
#8978
20M
20.00 mi12:53:232:26:527:2110:29
7:43
#8890
21M
21.00 mi13:01:392:35:087:238:16
8:16
#8870
35K
21.75 mi13:07:222:40:517:245:43
7:38
#8870
23M
23.00 mi13:17:112:50:407:259:49
7:50
#8805
24M
24.00 mi13:25:042:58:337:267:53
7:53
#8864
40K
24.85 mi13:31:493:05:187:276:45
7:54
#8845
25.2M
25.20 mi13:34:483:08:177:282:59
8:39
#8841
Finish
26.22 mi13:42:403:16:097:297:52
7:43
#8904
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi9661797879789656(Top 34%)7891(Top 49%)7891(Top 331%)
10K6.21 mi3.10 mi9722-618014-368014-369785(Top 34%)8019(Top 50%)8019(Top 336%)
15K9.32 mi3.11 mi9677+457965+497965+499656(Top 34%)7891(Top 49%)7891(Top 331%)
20K12.43 mi3.11 mi9399+2787775+1907775+1908749(Top 31%)7297(Top 45%)7297(Top 306%)
Half13.11 mi0.68 mi9361+387753+227753+228458(Top 30%)7141(Top 44%)7141(Top 299%)
25K15.53 mi2.42 mi9089+2727575+1787575+1788128(Top 29%)6834(Top 42%)6834(Top 286%)
30K18.64 mi3.11 mi8978+1117448+1277448+1278884(Top 31%)7071(Top 44%)7071(Top 296%)
20M20.00 mi1.36 mi8890+887375+737375+738403(Top 30%)6659(Top 41%)6659(Top 279%)
21M21.00 mi1.00 mi8870+207327+487327+488954(Top 32%)6774(Top 42%)6774(Top 284%)
35K21.75 mi0.75 mi88707305+227305+229567(Top 34%)7121(Top 44%)7121(Top 298%)
23M23.00 mi1.25 mi8805+657225+807225+808821(Top 31%)6609(Top 41%)6609(Top 277%)
24M24.00 mi1.00 mi8864-597225722510386(Top 37%)7353(Top 46%)7353(Top 308%)
40K24.85 mi0.85 mi8845+197172+537172+539362(Top 33%)6702(Top 42%)6702(Top 281%)
25.2M25.20 mi0.35 mi8841+47156+167156+169576(Top 34%)6695(Top 42%)6695(Top 281%)
Finish26.22 mi1.02 mi8904-637157-17157-110787(Top 38%)7379(Top 46%)7379(Top 309%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 34%
×21stories
+97ft-345ft

Overall

9656

Males

7891

M45-49

7891

5K→10K

3.1 - 6.2 mi

Top 34%
×5stories
+79ft-138ft

Overall

9785

Males

8019

M45-49

8019

10K→15K

6.2 - 9.3 mi

Top 34%
×3stories
+67ft-78ft

Overall

9656

Males

7891

M45-49

7891

15K→20K

9.3 - 12.4 mi

Top 31%
×5stories
+106ft-86ft

Overall

8749

Males

7297

M45-49

7297

20K→Half

12.4 - 13.1 mi

Top 30%
×2stories
+19ft-37ft

Overall

8458

Males

7141

M45-49

7141

Half→25K

13.1 - 15.5 mi

Top 29%
×4stories
+66ft-88ft

Overall

8128

Males

6834

M45-49

6834

25K→30K

15.5 - 18.6 mi

Top 31%
×9stories
+181ft-148ft

Overall

8884

Males

7071

M45-49

7071

30K→20M

18.6 - 20.0 mi

Top 30%
×5stories
+64ft-50ft

Overall

8403

Males

6659

M45-49

6659

20M→21M

20.0 - 21.0 mi

Top 32%
×8stories
+106ft-24ft

Overall

8954

Males

6774

M45-49

6774

21M→35K

21.0 - 21.8 mi

Top 34%
×7stories
+17ft-86ft

Overall

9567

Males

7121

M45-49

7121

35K→23M

21.8 - 23.0 mi

Top 31%
×5stories
+23ft-63ft

Overall

8821

Males

6609

M45-49

6609

23M→24M

23.0 - 24.0 mi

Top 37%
×6stories
+12ft-82ft

Overall

10386

Males

7353

M45-49

7353

24M→40K

24.0 - 24.9 mi

Top 33%
×1story
+6ft-20ft

Overall

9362

Males

6702

M45-49

6702

40K→25.2M

24.9 - 25.2 mi

Top 34%
×1story
+13ft-16ft

Overall

9576

Males

6695

M45-49

6695

25.2M→Finish

25.2 - 26.2 mi

Top 38%
×2stories
+22ft-21ft

Overall

10787

Males

7379

M45-49

7379

Passing Analysis

Category:
Athletes Passed
2032
Passed By
1273
Net Change
+757
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9661
5K → 10K201261-61#9661#9722
10K → 15K192146+45#9722#9677
15K → 20K32749+278#9677#9399
20K → Half468+38#9399#9361
Half → 25K29927+272#9361#9089
25K → 30K272161+111#9089#8978
30K → 20M14355+88#8978#8890
20M → 21M11191+20#8890#8870
21M → 35K61610#8870#8870
35K → 23M14277+65#8870#8805
23M → 24M58117-59#8805#8864
24M → 40K8061+19#8864#8845
40K → 25.2M3834+4#8845#8841
25.2M → Finish62125-63#8841#8904
TOTALS20321273+757
📊

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