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BOSTON MARATHON 2025

Gregor Sosnowski

Bib: 17486•M

IL

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 44%
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Top 46%
Division (M55-59)
#0 / 1648
Top 32%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:07
Rank: #11697
Start → 5K
23:07 | 7:26/mi
10K· 6.21 mi
46:35
Rank: #12094 (-397)
5K → 10K
23:28 | 7:33/mi
15K· 9.32 mi
1:10:12
Rank: #12252 (-158)
10K → 15K
23:37 | 7:36/mi
20K· 12.43 mi
1:34:09
Rank: #12289 (-37)
15K → 20K
23:57 | 7:43/mi
Half· 13.11 mi
1:39:16
Rank: #12266 (+23)
20K → Half
5:07 | 7:30/mi
25K· 15.53 mi
1:58:09
Rank: #12234 (+32)
Half → 25K
18:53 | 7:47/mi
30K· 18.64 mi
2:23:18
Rank: #12145 (+89)
25K → 30K
25:09 | 8:06/mi
20M
2:34:41
Rank: #12186 (-41)
30K → 20M
11:23 | 8:23/mi
21M
2:43:39
Rank: #12245 (-59)
20M → 21M
8:58 | 8:58/mi
35K· 21.75 mi
2:49:40
Rank: #12235 (+10)
21M → 35K
6:01 | 8:03/mi
23M
3:00:13
Rank: #12247 (-12)
35K → 23M
10:33 | 8:26/mi
24M
3:08:28
Rank: #12274 (-27)
23M → 24M
8:15 | 8:15/mi
40K· 24.85 mi
3:15:46
Rank: #12303 (-29)
24M → 40K
7:18 | 8:32/mi
25.2M
3:19:02
Rank: #12340 (-37)
40K → 25.2M
3:16 | 9:28/mi
Finish· 26.22 mi
3:27:26
Rank: #12421 (-81)
25.2M → Finish
8:24 | 8:15/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:39:16
Pace7:34 /mi
2nd Half
Distance13.11 mi
Time1:48:10
Pace8:15 /mi
📊Positive Split: 9.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:13:2623:077:2623:07
7:26
-
10K
6.21 mi11:36:5446:357:3023:28
7:33
+0:07
15K
9.32 mi12:00:311:10:127:3223:37
7:36
+0:03
20K
12.43 mi12:24:281:34:097:3523:57
7:43
+0:07
Half
13.11 mi12:29:351:39:167:345:07
7:30
-0:13
25K
15.53 mi12:48:281:58:097:3618:53
7:47
+0:17
30K
18.64 mi13:13:372:23:187:4125:09
8:06
+0:19
20M
20.00 mi13:25:002:34:417:4411:23
8:23
+0:17
21M
21.00 mi13:33:582:43:397:488:58
8:58
+0:35
35K
21.75 mi13:39:592:49:407:486:01
8:03
-0:55
23M
23.00 mi13:50:323:00:137:5010:33
8:26
+0:23
24M
24.00 mi13:58:473:08:287:518:15
8:15
-0:11
40K
24.85 mi14:06:053:15:467:537:18
8:32
+0:17
25.2M
25.20 mi14:09:213:19:027:543:16
9:28
+0:56
Finish
26.22 mi14:17:453:27:267:558:24
8:15
-1:13

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

7:26 /mi

Average Pace

7:55 /mi

Slowest Pace

9:28 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:58:09

57% of race

Time at Steady Pace

47:49

23% of race

Time at Slower Pace

41:28

20% of race

Average Pace: 7:55 /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 mi11:13:2623:077:2623:07
7:26
#11697
10K
6.21 mi11:36:5446:357:3023:28
7:33
#12094
15K
9.32 mi12:00:311:10:127:3223:37
7:36
#12252
20K
12.43 mi12:24:281:34:097:3523:57
7:43
#12289
Half
13.11 mi12:29:351:39:167:345:07
7:30
#12266
25K
15.53 mi12:48:281:58:097:3618:53
7:47
#12234
30K
18.64 mi13:13:372:23:187:4125:09
8:06
#12145
20M
20.00 mi13:25:002:34:417:4411:23
8:23
#12186
21M
21.00 mi13:33:582:43:397:488:58
8:58
#12245
35K
21.75 mi13:39:592:49:407:486:01
8:03
#12235
23M
23.00 mi13:50:323:00:137:5010:33
8:26
#12247
24M
24.00 mi13:58:473:08:287:518:15
8:15
#12274
40K
24.85 mi14:06:053:15:467:537:18
8:32
#12303
25.2M
25.20 mi14:09:213:19:027:543:16
9:28
#12340
Finish
26.22 mi14:17:453:27:267:558:24
8:15
#12421
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi116979038903812593(Top 44%)9344(Top 58%)9344(Top 567%)
10K6.21 mi3.10 mi12094-3979202-1649202-16412579(Top 44%)9408(Top 58%)9408(Top 571%)
15K9.32 mi3.11 mi12252-1589242-409242-4012593(Top 44%)9344(Top 58%)9344(Top 567%)
20K12.43 mi3.11 mi12289-379230+129230+1212475(Top 44%)9181(Top 57%)9181(Top 557%)
Half13.11 mi0.68 mi12266+239212+189212+1811661(Top 41%)8871(Top 55%)8871(Top 538%)
25K15.53 mi2.42 mi12234+329163+499163+4912236(Top 43%)8960(Top 56%)8960(Top 544%)
30K18.64 mi3.11 mi12145+899047+1169047+11612056(Top 42%)8706(Top 54%)8706(Top 528%)
20M20.00 mi1.36 mi12186-419026+219026+2112973(Top 46%)8975(Top 56%)8975(Top 545%)
21M21.00 mi1.00 mi12245-599012+149012+1413281(Top 47%)8988(Top 56%)8988(Top 545%)
35K21.75 mi0.75 mi12235+108981+318981+3112505(Top 44%)8566(Top 53%)8566(Top 520%)
23M23.00 mi1.25 mi12247-128949+328949+3212831(Top 45%)8616(Top 53%)8616(Top 523%)
24M24.00 mi1.00 mi12274-278933+168933+1612893(Top 45%)8597(Top 53%)8597(Top 522%)
40K24.85 mi0.85 mi12303-298917+168917+1613646(Top 48%)8827(Top 55%)8827(Top 536%)
25.2M25.20 mi0.35 mi12340-378919-28919-214373(Top 51%)9102(Top 57%)9102(Top 552%)
Finish26.22 mi1.02 mi12421-818929-108929-1014524(Top 51%)9265(Top 58%)9265(Top 562%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 44%
×21stories
+97ft-345ft

Overall

12593

Males

9344

M55-59

9344

5K→10K

3.1 - 6.2 mi

Top 44%
×5stories
+79ft-138ft

Overall

12579

Males

9408

M55-59

9408

10K→15K

6.2 - 9.3 mi

Top 44%
×3stories
+67ft-78ft

Overall

12593

Males

9344

M55-59

9344

15K→20K

9.3 - 12.4 mi

Top 44%
×5stories
+106ft-86ft

Overall

12475

Males

9181

M55-59

9181

20K→Half

12.4 - 13.1 mi

Top 41%
×2stories
+19ft-37ft

Overall

11661

Males

8871

M55-59

8871

Half→25K

13.1 - 15.5 mi

Top 43%
×4stories
+66ft-88ft

Overall

12236

Males

8960

M55-59

8960

25K→30K

15.5 - 18.6 mi

Top 42%
×9stories
+181ft-148ft

Overall

12056

Males

8706

M55-59

8706

30K→20M

18.6 - 20.0 mi

Top 46%
×5stories
+64ft-50ft

Overall

12973

Males

8975

M55-59

8975

20M→21M

20.0 - 21.0 mi

Top 47%
×8stories
+106ft-24ft

Overall

13281

Males

8988

M55-59

8988

21M→35K

21.0 - 21.8 mi

Top 44%
×7stories
+17ft-86ft

Overall

12505

Males

8566

M55-59

8566

35K→23M

21.8 - 23.0 mi

Top 45%
×5stories
+23ft-63ft

Overall

12831

Males

8616

M55-59

8616

23M→24M

23.0 - 24.0 mi

Top 45%
×6stories
+12ft-82ft

Overall

12893

Males

8597

M55-59

8597

24M→40K

24.0 - 24.9 mi

Top 48%
×1story
+6ft-20ft

Overall

13646

Males

8827

M55-59

8827

40K→25.2M

24.9 - 25.2 mi

Top 51%
×1story
+13ft-16ft

Overall

14373

Males

9102

M55-59

9102

25.2M→Finish

25.2 - 26.2 mi

Top 51%
×2stories
+22ft-21ft

Overall

14524

Males

9265

M55-59

9265

Passing Analysis

Category:
Athletes Passed
1462
Passed By
2186
Net Change
-724
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11697
5K → 10K112509-397#11697#12094
10K → 15K134292-158#12094#12252
15K → 20K170207-37#12252#12289
20K → Half4017+23#12289#12266
Half → 25K168136+32#12266#12234
25K → 30K283194+89#12234#12145
30K → 20M104145-41#12145#12186
20M → 21M88147-59#12186#12245
21M → 35K6454+10#12245#12235
35K → 23M102114-12#12235#12247
23M → 24M7299-27#12247#12274
24M → 40K6089-29#12274#12303
40K → 25.2M1754-37#12303#12340
25.2M → Finish48129-81#12340#12421
TOTALS14622186-724
📊

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