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BOSTON MARATHON 2025

Thomas Golembeski

Bib: 25748•M

CT

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M50-54)
#0 / 1996
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
28:43
Rank: #23363
Start → 5K
9:15/mi
28:43 split
10K· 6.21 mi
58:47
Rank: #24074 (-711)
5K → 10K
9:41/mi
30:04 split
15K· 9.32 mi
1:29:24
Rank: #24294 (-220)
10K → 15K
9:51/mi
30:37 split
20K· 12.43 mi
2:00:58
Rank: #24382 (-88)
15K → 20K
10:10/mi
31:34 split
Half· 13.11 mi
2:07:35
Rank: #24351 (+31)
20K → Half
9:42/mi
6:37 split
25K· 15.53 mi
2:32:49
Rank: #24345 (+6)
Half → 25K
10:24/mi
25:14 split
30K· 18.64 mi
3:06:49
Rank: #24280 (+65)
25K → 30K
10:57/mi
34:00 split
20M
3:20:59
Rank: #24116 (+164)
30K → 20M
10:25/mi
14:10 split
21M
3:32:01
Rank: #23989 (+127)
20M → 21M
11:02/mi
11:02 split
35K· 21.75 mi
3:39:40
Rank: #23923 (+66)
21M → 35K
10:14/mi
7:39 split
23M
3:53:47
Rank: #23905 (+18)
35K → 23M
11:16/mi
14:07 split
24M
4:05:17
Rank: #23966 (-61)
23M → 24M
11:30/mi
11:30 split
40K· 24.85 mi
4:15:14
Rank: #24006 (-40)
24M → 40K
11:38/mi
9:57 split
25.2M
4:19:20
Rank: #23996 (+10)
40K → 25.2M
11:53/mi
4:06 split
Finish· 26.22 mi
4:29:55
Rank: #24006 (-10)
25.2M → Finish
10:23/mi
10:35 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:07:35
Pace9:44 /mi
2nd Half
Distance13.11 mi
Time2:22:20
Pace10:51 /mi
📊Positive Split: 11.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:44:0328:439:1528:43
9:15
-
10K
6.21 mi12:14:0758:479:2830:04
9:41
+0:26
15K
9.32 mi12:44:441:29:249:3630:37
9:51
+0:10
20K
12.43 mi13:16:182:00:589:4431:34
10:10
+0:19
Half
13.11 mi13:22:552:07:359:446:37
9:42
-0:28
25K
15.53 mi13:48:092:32:499:5025:14
10:24
+0:42
30K
18.64 mi14:22:093:06:4910:0134:00
10:57
+0:33
20M
20.00 mi14:36:193:20:5910:0314:10
10:25
-0:32
21M
21.00 mi14:47:213:32:0110:0611:02
11:02
+0:37
35K
21.75 mi14:55:003:39:4010:067:39
10:14
-0:48
23M
23.00 mi15:09:073:53:4710:1014:07
11:16
+1:02
24M
24.00 mi15:20:374:05:1710:1311:30
11:30
+0:14
40K
24.85 mi15:30:344:15:1410:169:57
11:38
+0:08
25.2M
25.20 mi15:34:404:19:2010:174:06
11:53
+0:15
Finish
26.22 mi15:45:154:29:5510:1810:35
10:23
-1:30

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

9:15 /mi

Average Pace

10:18 /mi

Slowest Pace

11:53 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:36:01

36% of race

Time at Steady Pace

1:29:12

33% of race

Time at Slower Pace

1:24:42

31% of race

Average Pace: 10:18 /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 mi11:44:0328:439:1528:43
9:15
#23363
10K
6.21 mi12:14:0758:479:2830:04
9:41
#24074
15K
9.32 mi12:44:441:29:249:3630:37
9:51
#24294
20K
12.43 mi13:16:182:00:589:4431:34
10:10
#24382
Half
13.11 mi13:22:552:07:359:446:37
9:42
#24351
25K
15.53 mi13:48:092:32:499:5025:14
10:24
#24345
30K
18.64 mi14:22:093:06:4910:0134:00
10:57
#24280
20M
20.00 mi14:36:193:20:5910:0314:10
10:25
#24116
21M
21.00 mi14:47:213:32:0110:0611:02
11:02
#23989
35K
21.75 mi14:55:003:39:4010:067:39
10:14
#23923
23M
23.00 mi15:09:073:53:4710:1014:07
11:16
#23905
24M
24.00 mi15:20:374:05:1710:1311:30
11:30
#23966
40K
24.85 mi15:30:344:15:1410:169:57
11:38
#24006
25.2M
25.20 mi15:34:404:19:2010:174:06
11:53
#23996
Finish
26.22 mi15:45:154:29:5510:1810:35
10:23
#24006
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi23363139361393624662(Top 87%)14565(Top 90%)14565(Top 730%)
10K6.21 mi3.10 mi24074-71114287-35114287-35124554(Top 86%)14501(Top 90%)14501(Top 727%)
15K9.32 mi3.11 mi24294-22014394-10714394-10724662(Top 87%)14565(Top 90%)14565(Top 730%)
20K12.43 mi3.11 mi24382-8814405-1114405-1124554(Top 86%)14472(Top 90%)14472(Top 725%)
Half13.11 mi0.68 mi24351+3114392+1314392+1324089(Top 85%)14275(Top 89%)14275(Top 715%)
25K15.53 mi2.42 mi24345+614375+1714375+1724186(Top 85%)14282(Top 89%)14282(Top 716%)
30K18.64 mi3.11 mi24280+6514333+4214333+4223909(Top 84%)14026(Top 87%)14026(Top 703%)
20M20.00 mi1.36 mi24116+16414232+10114232+10122229(Top 78%)13153(Top 82%)13153(Top 659%)
21M21.00 mi1.00 mi23989+12714161+7114161+7121492(Top 76%)12739(Top 79%)12739(Top 638%)
35K21.75 mi0.75 mi23923+6614123+3814123+3822499(Top 79%)13158(Top 82%)13158(Top 659%)
23M23.00 mi1.25 mi23905+1814089+3414089+3423831(Top 84%)13753(Top 85%)13753(Top 689%)
24M24.00 mi1.00 mi23966-6114117-2814117-2824894(Top 88%)14250(Top 88%)14250(Top 714%)
40K24.85 mi0.85 mi24006-4014112+514112+524369(Top 86%)13947(Top 87%)13947(Top 699%)
25.2M25.20 mi0.35 mi23996+1014109+314109+322993(Top 81%)13287(Top 83%)13287(Top 666%)
Finish26.22 mi1.02 mi24006-1014100+914100+924001(Top 84%)13769(Top 85%)13769(Top 690%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 87%
×21story building
+97ft-345ft

Overall

24662

Males

14565

M50-54

14565

5K→10K

3.1 - 6.2 mi

Top 86%
×5story building
+79ft-138ft

Overall

24554

Males

14501

M50-54

14501

10K→15K

6.2 - 9.3 mi

Top 87%
×3story building
+67ft-78ft

Overall

24662

Males

14565

M50-54

14565

15K→20K

9.3 - 12.4 mi

Top 86%
×5story building
+106ft-86ft

Overall

24554

Males

14472

M50-54

14472

20K→Half

12.4 - 13.1 mi

Top 85%
×2story building
+19ft-37ft

Overall

24089

Males

14275

M50-54

14275

Half→25K

13.1 - 15.5 mi

Top 85%
×4story building
+66ft-88ft

Overall

24186

Males

14282

M50-54

14282

25K→30K

15.5 - 18.6 mi

Top 84%
×9story building
+181ft-148ft

Overall

23909

Males

14026

M50-54

14026

30K→20M

18.6 - 20.0 mi

Top 78%
×5story building
+64ft-50ft

Overall

22229

Males

13153

M50-54

13153

20M→21M

20.0 - 21.0 mi

Top 76%
×8story building
+106ft-24ft

Overall

21492

Males

12739

M50-54

12739

21M→35K

21.0 - 21.8 mi

Top 79%
×7story building
+17ft-86ft

Overall

22499

Males

13158

M50-54

13158

35K→23M

21.8 - 23.0 mi

Top 84%
×5story building
+23ft-63ft

Overall

23831

Males

13753

M50-54

13753

23M→24M

23.0 - 24.0 mi

Top 88%
×6story building
+12ft-82ft

Overall

24894

Males

14250

M50-54

14250

24M→40K

24.0 - 24.9 mi

Top 86%
×1story
+6ft-20ft

Overall

24369

Males

13947

M50-54

13947

40K→25.2M

24.9 - 25.2 mi

Top 81%
×1story
+13ft-16ft

Overall

22993

Males

13287

M50-54

13287

25.2M→Finish

25.2 - 26.2 mi

Top 84%
×2story building
+22ft-21ft

Overall

24001

Males

13769

M50-54

13769

Passing Analysis

Category:
Athletes Passed
1154
Passed By
1797
Net Change
-643
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23363
5K → 10K57768-711#23363#24074
10K → 15K73293-220#24074#24294
15K → 20K101189-88#24294#24382
20K → Half409+31#24382#24351
Half → 25K123117+6#24351#24345
25K → 30K180115+65#24345#24280
30K → 20M1717+164#24280#24116
20M → 21M13912+127#24116#23989
21M → 35K8014+66#23989#23923
35K → 23M7153+18#23923#23905
23M → 24M2687-61#23905#23966
24M → 40K2969-40#23966#24006
40K → 25.2M2111+10#24006#23996
25.2M → Finish4353-10#23996#24006
TOTALS11541797-643
📊

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