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BOSTON MARATHON 2025

Thomas Gregg

Bib: 17312•M

VA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M60-64)
#0 / 1259
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:11
Rank: #8977
Start → 5K
7:08/mi
22:11 split
10K· 6.21 mi
45:55
Rank: #11150 (-2173)
5K → 10K
7:38/mi
23:44 split
15K· 9.32 mi
1:11:35
Rank: #13576 (-2426)
10K → 15K
8:16/mi
25:40 split
20K· 12.43 mi
1:38:24
Rank: #15255 (-1679)
15K → 20K
8:38/mi
26:49 split
Half· 13.11 mi
1:44:15
Rank: #15560 (-305)
20K → Half
8:34/mi
5:51 split
25K· 15.53 mi
2:06:54
Rank: #16766 (-1206)
Half → 25K
9:21/mi
22:39 split
30K· 18.64 mi
2:39:55
Rank: #18628 (-1862)
25K → 30K
10:38/mi
33:01 split
20M
2:54:11
Rank: #19069 (-441)
30K → 20M
10:30/mi
14:16 split
21M
3:05:55
Rank: #19447 (-378)
20M → 21M
11:44/mi
11:44 split
35K· 21.75 mi
3:13:43
Rank: #19668 (-221)
21M → 35K
10:26/mi
7:48 split
23M
3:27:13
Rank: #19966 (-298)
35K → 23M
10:47/mi
13:30 split
24M
3:37:52
Rank: #20185 (-219)
23M → 24M
10:39/mi
10:39 split
40K· 24.85 mi
3:47:07
Rank: #20351 (-166)
24M → 40K
10:49/mi
9:15 split
25.2M
3:51:22
Rank: #20467 (-116)
40K → 25.2M
12:19/mi
4:15 split
Finish· 26.22 mi
4:02:26
Rank: #20692 (-225)
25.2M → Finish
10:52/mi
11:04 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:44:15
Pace7:57 /mi
2nd Half
Distance13.11 mi
Time2:18:11
Pace10:32 /mi
📊Positive Split: 32.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:12:2722:117:0822:11
7:08
-
10K
6.21 mi11:36:1145:557:2323:44
7:38
+0:30
15K
9.32 mi12:01:511:11:357:4125:40
8:16
+0:38
20K
12.43 mi12:28:401:38:247:5526:49
8:38
+0:22
Half
13.11 mi12:34:311:44:157:575:51
8:34
-0:04
25K
15.53 mi12:57:102:06:548:1022:39
9:21
+0:47
30K
18.64 mi13:30:112:39:558:3533:01
10:38
+1:17
20M
20.00 mi13:44:272:54:118:4314:16
10:30
-0:08
21M
21.00 mi13:56:113:05:558:5111:44
11:44
+1:14
35K
21.75 mi14:03:593:13:438:547:48
10:26
-1:18
23M
23.00 mi14:17:293:27:139:0113:30
10:47
+0:21
24M
24.00 mi14:28:083:37:529:0510:39
10:39
-0:08
40K
24.85 mi14:37:233:47:079:089:15
10:49
+0:10
25.2M
25.20 mi14:41:383:51:229:114:15
12:19
+1:30
Finish
26.22 mi14:52:424:02:269:1511:04
10:52
-1:27

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

9:15 /mi

Slowest Pace

12:19 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:06:54

52% of race

Time at Steady Pace

1:39:33

41% of race

Time at Slower Pace

15:59

7% of race

Average Pace: 9:15 /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 mi11:12:2722:117:0822:11
7:08
#8977
10K
6.21 mi11:36:1145:557:2323:44
7:38
#11150
15K
9.32 mi12:01:511:11:357:4125:40
8:16
#13576
20K
12.43 mi12:28:401:38:247:5526:49
8:38
#15255
Half
13.11 mi12:34:311:44:157:575:51
8:34
#15560
25K
15.53 mi12:57:102:06:548:1022:39
9:21
#16766
30K
18.64 mi13:30:112:39:558:3533:01
10:38
#18628
20M
20.00 mi13:44:272:54:118:4314:16
10:30
#19069
21M
21.00 mi13:56:113:05:558:5111:44
11:44
#19447
35K
21.75 mi14:03:593:13:438:547:48
10:26
#19668
23M
23.00 mi14:17:293:27:139:0113:30
10:47
#19966
24M
24.00 mi14:28:083:37:529:0510:39
10:39
#20185
40K
24.85 mi14:37:233:47:079:089:15
10:49
#20351
25.2M
25.20 mi14:41:383:51:229:114:15
12:19
#20467
Finish
26.22 mi14:52:424:02:269:1511:04
10:52
#20692
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi89777603760317797(Top 63%)11547(Top 72%)11547(Top 917%)
10K6.21 mi3.10 mi11150-21738754-11518754-115113363(Top 47%)9742(Top 60%)9742(Top 774%)
15K9.32 mi3.11 mi13576-24269804-10509804-105017797(Top 63%)11547(Top 72%)11547(Top 917%)
20K12.43 mi3.11 mi15255-167910484-68010484-68019014(Top 67%)12039(Top 75%)12039(Top 956%)
Half13.11 mi0.68 mi15560-30510613-12910613-12919667(Top 69%)12341(Top 77%)12341(Top 980%)
25K15.53 mi2.42 mi16766-120611090-47711090-47721326(Top 75%)13000(Top 81%)13000(Top 1033%)
30K18.64 mi3.11 mi18628-186211841-75111841-75123215(Top 82%)13708(Top 85%)13708(Top 1089%)
20M20.00 mi1.36 mi19069-44111996-15511996-15522401(Top 79%)13231(Top 82%)13231(Top 1051%)
21M21.00 mi1.00 mi19447-37812133-13712133-13723079(Top 81%)13485(Top 84%)13485(Top 1071%)
35K21.75 mi0.75 mi19668-22112217-8412217-8422994(Top 81%)13377(Top 83%)13377(Top 1063%)
23M23.00 mi1.25 mi19966-29812308-9112308-9122701(Top 80%)13200(Top 82%)13200(Top 1048%)
24M24.00 mi1.00 mi20185-21912387-7912387-7923186(Top 82%)13396(Top 83%)13396(Top 1064%)
40K24.85 mi0.85 mi20351-16612451-6412451-6422710(Top 80%)13090(Top 81%)13090(Top 1040%)
25.2M25.20 mi0.35 mi20467-11612500-4912500-4923831(Top 84%)13676(Top 85%)13676(Top 1086%)
Finish26.22 mi1.02 mi20692-22512588-8812588-8825077(Top 88%)14320(Top 89%)14320(Top 1137%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 63%
×21story building
+97ft-345ft

Overall

17797

Males

11547

M60-64

11547

5K→10K

3.1 - 6.2 mi

Top 47%
×5story building
+79ft-138ft

Overall

13363

Males

9742

M60-64

9742

10K→15K

6.2 - 9.3 mi

Top 63%
×3story building
+67ft-78ft

Overall

17797

Males

11547

M60-64

11547

15K→20K

9.3 - 12.4 mi

Top 67%
×5story building
+106ft-86ft

Overall

19014

Males

12039

M60-64

12039

20K→Half

12.4 - 13.1 mi

Top 69%
×2story building
+19ft-37ft

Overall

19667

Males

12341

M60-64

12341

Half→25K

13.1 - 15.5 mi

Top 75%
×4story building
+66ft-88ft

Overall

21326

Males

13000

M60-64

13000

25K→30K

15.5 - 18.6 mi

Top 82%
×9story building
+181ft-148ft

Overall

23215

Males

13708

M60-64

13708

30K→20M

18.6 - 20.0 mi

Top 79%
×5story building
+64ft-50ft

Overall

22401

Males

13231

M60-64

13231

20M→21M

20.0 - 21.0 mi

Top 81%
×8story building
+106ft-24ft

Overall

23079

Males

13485

M60-64

13485

21M→35K

21.0 - 21.8 mi

Top 81%
×7story building
+17ft-86ft

Overall

22994

Males

13377

M60-64

13377

35K→23M

21.8 - 23.0 mi

Top 80%
×5story building
+23ft-63ft

Overall

22701

Males

13200

M60-64

13200

23M→24M

23.0 - 24.0 mi

Top 82%
×6story building
+12ft-82ft

Overall

23186

Males

13396

M60-64

13396

24M→40K

24.0 - 24.9 mi

Top 80%
×1story
+6ft-20ft

Overall

22710

Males

13090

M60-64

13090

40K→25.2M

24.9 - 25.2 mi

Top 84%
×1story
+13ft-16ft

Overall

23831

Males

13676

M60-64

13676

25.2M→Finish

25.2 - 26.2 mi

Top 88%
×2story building
+22ft-21ft

Overall

25077

Males

14320

M60-64

14320

Passing Analysis

Category:
Athletes Passed
255
Passed By
11968
Net Change
-11715
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8977
5K → 10K42175-2173#8977#11150
10K → 15K122438-2426#11150#13576
15K → 20K251704-1679#13576#15255
20K → Half5310-305#15255#15560
Half → 25K181224-1206#15560#16766
25K → 30K231885-1862#16766#18628
30K → 20M27468-441#18628#19069
20M → 21M29407-378#19069#19447
21M → 35K14235-221#19447#19668
35K → 23M37335-298#19668#19966
23M → 24M17236-219#19966#20185
24M → 40K29195-166#20185#20351
40K → 25.2M5121-116#20351#20467
25.2M → Finish10235-225#20467#20692
TOTALS25511968-11715
📊

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