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BOSTON MARATHON 2025

Colby Gray

Bib: 29328•M

MA

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Division (M18-39)
#0 / 5642
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
27:36
Rank: #21916
Start → 5K
27:36 | 8:53/mi
10K· 6.21 mi
55:47
Rank: #22338 (-422)
5K → 10K
28:11 | 9:04/mi
15K· 9.32 mi
1:25:02
Rank: #22795 (-457)
10K → 15K
29:15 | 9:25/mi
20K· 12.43 mi
1:58:19
Rank: #23796 (-1001)
15K → 20K
33:17 | 10:43/mi
Half· 13.11 mi
2:05:33
Rank: #23928 (-132)
20K → Half
7:14 | 10:36/mi
25K· 15.53 mi
2:36:50
Rank: #24931 (-1003)
Half → 25K
31:17 | 12:54/mi
30K· 18.64 mi
3:16:22
Rank: #25304 (-373)
25K → 30K
39:32 | 12:43/mi
20M
3:33:30
Rank: #25369 (-65)
30K → 20M
17:08 | 12:36/mi
21M
3:48:11
Rank: #25500 (-131)
20M → 21M
14:41 | 14:41/mi
35K· 21.75 mi
3:57:28
Rank: #25533 (-33)
21M → 35K
9:17 | 12:25/mi
23M
4:13:06
Rank: #25587 (-54)
35K → 23M
15:38 | 12:29/mi
24M
4:25:24
Rank: #25632 (-45)
23M → 24M
12:18 | 12:18/mi
40K· 24.85 mi
4:36:34
Rank: #25683 (-51)
24M → 40K
11:10 | 13:04/mi
25.2M
4:41:29
Rank: #25706 (-23)
40K → 25.2M
4:55 | 14:15/mi
Finish· 26.22 mi
4:52:32
Rank: #25692 (+14)
25.2M → Finish
11:03 | 10:51/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:05:33
Pace9:35 /mi
2nd Half
Distance13.11 mi
Time2:46:59
Pace12:44 /mi
📊Positive Split: 33.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:46:0727:368:5327:36
8:53
-
10K
6.21 mi12:14:1855:478:5928:11
9:04
+0:11
15K
9.32 mi12:43:331:25:029:0729:15
9:25
+0:21
20K
12.43 mi13:16:501:58:199:3133:17
10:43
+1:18
Half
13.11 mi13:24:042:05:339:357:14
10:36
-0:07
25K
15.53 mi13:55:212:36:5010:0631:17
12:54
+2:18
30K
18.64 mi14:34:533:16:2210:3239:32
12:43
-0:11
20M
20.00 mi14:52:013:33:3010:4017:08
12:36
-0:07
21M
21.00 mi15:06:423:48:1110:5214:41
14:41
+2:05
35K
21.75 mi15:15:593:57:2810:559:17
12:25
-2:16
23M
23.00 mi15:31:374:13:0611:0015:38
12:29
+0:04
24M
24.00 mi15:43:554:25:2411:0412:18
12:18
-0:11
40K
24.85 mi15:55:054:36:3411:0811:10
13:04
+0:46
25.2M
25.20 mi16:00:004:41:2911:104:55
14:15
+1:11
Finish
26.22 mi16:11:034:52:3211:1011:03
10:51
-3:24

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

8:53 /mi

Average Pace

11:10 /mi

Slowest Pace

14:41 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:16:36

47% of race

Time at Steady Pace

2:16:20

47% of race

Time at Slower Pace

19:36

7% of race

Average Pace: 11:09 /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 mi11:46:0727:368:5327:36
8:53
#21916
10K
6.21 mi12:14:1855:478:5928:11
9:04
#22338
15K
9.32 mi12:43:331:25:029:0729:15
9:25
#22795
20K
12.43 mi13:16:501:58:199:3133:17
10:43
#23796
Half
13.11 mi13:24:042:05:339:357:14
10:36
#23928
25K
15.53 mi13:55:212:36:5010:0631:17
12:54
#24931
30K
18.64 mi14:34:533:16:2210:3239:32
12:43
#25304
20M
20.00 mi14:52:013:33:3010:4017:08
12:36
#25369
21M
21.00 mi15:06:423:48:1110:5214:41
14:41
#25500
35K
21.75 mi15:15:593:57:2810:559:17
12:25
#25533
23M
23.00 mi15:31:374:13:0611:0015:38
12:29
#25587
24M
24.00 mi15:43:554:25:2411:0412:18
12:18
#25632
40K
24.85 mi15:55:054:36:3411:0811:10
13:04
#25683
25.2M
25.20 mi16:00:004:41:2911:104:55
14:15
#25706
Finish
26.22 mi16:11:034:52:3211:1011:03
10:51
#25692
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi21916132781327823514(Top 83%)14068(Top 87%)14068(Top 249%)
10K6.21 mi3.10 mi22338-42213473-19513473-19522701(Top 80%)13672(Top 85%)13672(Top 242%)
15K9.32 mi3.11 mi22795-45713723-25013723-25023514(Top 83%)14068(Top 87%)14068(Top 249%)
20K12.43 mi3.11 mi23796-100114157-43414157-43425562(Top 90%)14924(Top 93%)14924(Top 265%)
Half13.11 mi0.68 mi23928-13214212-5514212-5525946(Top 91%)15088(Top 94%)15088(Top 267%)
25K15.53 mi2.42 mi24931-100314654-44214654-44227222(Top 96%)15597(Top 97%)15597(Top 276%)
30K18.64 mi3.11 mi25304-37314788-13414788-13426406(Top 93%)15163(Top 94%)15163(Top 269%)
20M20.00 mi1.36 mi25369-6514804-1614804-1626025(Top 92%)14931(Top 93%)14931(Top 265%)
21M21.00 mi1.00 mi25500-13114856-5214856-5226879(Top 95%)15308(Top 95%)15308(Top 271%)
35K21.75 mi0.75 mi25533-3314861-514861-526366(Top 93%)15028(Top 93%)15028(Top 266%)
23M23.00 mi1.25 mi25587-5414874-1314874-1325791(Top 91%)14732(Top 91%)14732(Top 261%)
24M24.00 mi1.00 mi25632-4514877-314877-326052(Top 92%)14835(Top 92%)14835(Top 263%)
40K24.85 mi0.85 mi25683-5114889-1214889-1226351(Top 93%)14966(Top 93%)14966(Top 265%)
25.2M25.20 mi0.35 mi25706-2314898-914898-926543(Top 93%)15026(Top 93%)15026(Top 266%)
Finish26.22 mi1.02 mi25692+1414885+1314885+1325052(Top 88%)14309(Top 89%)14309(Top 254%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 83%
×21stories
+97ft-345ft

Overall

23514

Males

14068

M18-39

14068

5K→10K

3.1 - 6.2 mi

Top 80%
×5stories
+79ft-138ft

Overall

22701

Males

13672

M18-39

13672

10K→15K

6.2 - 9.3 mi

Top 83%
×3stories
+67ft-78ft

Overall

23514

Males

14068

M18-39

14068

15K→20K

9.3 - 12.4 mi

Top 90%
×5stories
+106ft-86ft

Overall

25562

Males

14924

M18-39

14924

20K→Half

12.4 - 13.1 mi

Top 91%
×2stories
+19ft-37ft

Overall

25946

Males

15088

M18-39

15088

Half→25K

13.1 - 15.5 mi

Top 96%
×4stories
+66ft-88ft

Overall

27222

Males

15597

M18-39

15597

25K→30K

15.5 - 18.6 mi

Top 93%
×9stories
+181ft-148ft

Overall

26406

Males

15163

M18-39

15163

30K→20M

18.6 - 20.0 mi

Top 92%
×5stories
+64ft-50ft

Overall

26025

Males

14931

M18-39

14931

20M→21M

20.0 - 21.0 mi

Top 95%
×8stories
+106ft-24ft

Overall

26879

Males

15308

M18-39

15308

21M→35K

21.0 - 21.8 mi

Top 93%
×7stories
+17ft-86ft

Overall

26366

Males

15028

M18-39

15028

35K→23M

21.8 - 23.0 mi

Top 91%
×5stories
+23ft-63ft

Overall

25791

Males

14732

M18-39

14732

23M→24M

23.0 - 24.0 mi

Top 92%
×6stories
+12ft-82ft

Overall

26052

Males

14835

M18-39

14835

24M→40K

24.0 - 24.9 mi

Top 93%
×1story
+6ft-20ft

Overall

26351

Males

14966

M18-39

14966

40K→25.2M

24.9 - 25.2 mi

Top 93%
×1story
+13ft-16ft

Overall

26543

Males

15026

M18-39

15026

25.2M→Finish

25.2 - 26.2 mi

Top 88%
×2stories
+22ft-21ft

Overall

25052

Males

14309

M18-39

14309

Passing Analysis

Category:
Athletes Passed
418
Passed By
4194
Net Change
-3776
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21916
5K → 10K114536-422#21916#22338
10K → 15K68525-457#22338#22795
15K → 20K171018-1001#22795#23796
20K → Half2134-132#23796#23928
Half → 25K61009-1003#23928#24931
25K → 30K43416-373#24931#25304
30K → 20M3095-65#25304#25369
20M → 21M10141-131#25369#25500
21M → 35K1952-33#25500#25533
35K → 23M2983-54#25533#25587
23M → 24M2469-45#25587#25632
24M → 40K1869-51#25632#25683
40K → 25.2M326-23#25683#25706
25.2M → Finish3521+14#25706#25692
TOTALS4184194-3776
📊

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