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BOSTON MARATHON 2026

Giles Crelly-Byers

Bib: 31896•M

CO

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Overall
#0 / 29021
Gender (Male)
#0 / 16340
Age Group (M18-39)
#0 / 5723
Race Day Weather
51°/41°F
overcast clouds

Race Timeline and Course Information

Your journey through the course with elevation, pacing, and checkpoint details

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K
26:55
3.11 mi
Rank: #20989
Start → 5K
26:55 | 8:40/mi
10K
54:22
6.21 mi
Rank: #21582 (-593)
5K → 10K
27:27 | 8:51/mi
15K
1:21:48
9.32 mi
Rank: #21668 (-86)
10K → 15K
27:26 | 8:50/mi
20K
1:49:28
12.43 mi
Rank: #21593 (+75)
15K → 20K
27:40 | 8:55/mi
HALF
1:55:37
13.11 mi
Rank: #21647 (-54)
20K → HALF
6:09 | 9:02/mi
25K
2:18:44
15.53 mi
Rank: #21934 (-287)
HALF → 25K
23:07 | 9:32/mi
30K
2:50:17
18.64 mi
Rank: #22354 (-420)
25K → 30K
31:33 | 10:10/mi
20M
3:04:42
20.00 mi
Rank: #22568 (-214)
30K → 20M
14:25 | 10:37/mi
21M
3:15:51
21.00 mi
Rank: #22608 (-40)
20M → 21M
11:09 | 11:09/mi
35K
3:24:01
21.75 mi
Rank: #22733 (-125)
21M → 35K
8:10 | 10:55/mi
23M
3:38:23
23.00 mi
Rank: #22954 (-221)
35K → 23M
14:22 | 11:29/mi
24M
3:50:04
24.00 mi
Rank: #23134 (-180)
23M → 24M
11:41 | 11:41/mi
40K
3:59:52
24.85 mi
Rank: #23211 (-77)
24M → 40K
9:48 | 11:28/mi
25.2M
4:06:09
25.20 mi
Rank: #23488 (-277)
40K → 25.2M
6:17 | 18:14/mi
FINISH
4:16:14
26.22 mi
Rank: #23461 (+27)
25.2M → FINISH
10:05 | 9:54/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:55:37
Pace8:50 /mi
2nd Half
Distance13.11 mi
Time2:20:37
Pace10:44 /mi
📊Positive Split: 21.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:54:4526:558:4026:55
8:40
-
10K
6.21 mi12:22:1254:228:4527:27
8:51
+0:11
15K
9.32 mi12:49:381:21:488:4727:26
8:50
-0:01
20K
12.43 mi13:17:181:49:288:4927:40
8:55
+0:05
HALF
13.11 mi13:23:271:55:378:506:09
9:02
+0:07
25K
15.53 mi13:46:342:18:448:5623:07
9:32
+0:30
30K
18.64 mi14:18:072:50:179:0931:33
10:10
+0:38
20M
20.00 mi14:32:323:04:429:1514:25
10:37
+0:27
21M
21.00 mi14:43:413:15:519:2011:09
11:09
+0:32
35K
21.75 mi14:51:513:24:019:238:10
10:55
-0:14
23M
23.00 mi15:06:133:38:239:3014:22
11:29
+0:34
24M
24.00 mi15:17:543:50:049:3611:41
11:41
+0:12
40K
24.85 mi15:27:423:59:529:409:48
11:28
-0:13
25.2M
25.20 mi15:33:594:06:099:476:17
18:14
+6:46
FINISH
26.22 mi15:44:044:16:149:4710:05
9:54
-8:20

Checkpoint Splits Visualizations

Explore your race data through different visual perspectives. Scroll to discover each visualization.

📈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

8:40 /mi

Average Pace

9:47 /mi

Slowest Pace

18:14 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

1:49:28

43% of race

Time at Steady Pace

1:44:38

41% of race

Time at Slower Pace

42:08

16% of race

Average Pace: 9:46 /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

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi11:54:4526:558:4026:55
8:40
#20989
10K
6.21 mi12:22:1254:228:4527:27
8:51
#21582
15K
9.32 mi12:49:381:21:488:4727:26
8:50
#21668
20K
12.43 mi13:17:181:49:288:4927:40
8:55
#21593
HALF
13.11 mi13:23:271:55:378:506:09
9:02
#21647
25K
15.53 mi13:46:342:18:448:5623:07
9:32
#21934
30K
18.64 mi14:18:072:50:179:0931:33
10:10
#22354
20M
20.00 mi14:32:323:04:429:1514:25
10:37
#22568
21M
21.00 mi14:43:413:15:519:2011:09
11:09
#22608
35K
21.75 mi14:51:513:24:019:238:10
10:55
#22733
23M
23.00 mi15:06:133:38:239:3014:22
11:29
#22954
24M
24.00 mi15:17:543:50:049:3611:41
11:41
#23134
40K
24.85 mi15:27:423:59:529:409:48
11:28
#23211
25.2M
25.20 mi15:33:594:06:099:476:17
18:14
#23488
FINISH
26.22 mi15:44:044:16:149:4710:05
9:54
#23461
Faster pace
Steady pace
Slower pace

Rankings

Your position at each checkpoint and how you ranked in each segment

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi20989127431274321878(Top 75%)13206(Top 81%)13206(Top 231%)
10K6.21 mi3.10 mi21582-59313031-28813031-28822068(Top 76%)13288(Top 81%)13288(Top 232%)
15K9.32 mi3.11 mi21668-8613079-4813079-4821878(Top 75%)13206(Top 81%)13206(Top 231%)
20K12.43 mi3.11 mi21593+7513041+3813041+3821499(Top 74%)13005(Top 80%)13005(Top 227%)
HALF13.11 mi0.68 mi21647-5413067-2613067-2622837(Top 79%)13669(Top 84%)13669(Top 239%)
25K15.53 mi2.42 mi21934-28713217-15013217-15023125(Top 80%)13766(Top 84%)13766(Top 241%)
30K18.64 mi3.11 mi22354-42013396-17913396-17923514(Top 81%)13850(Top 85%)13850(Top 242%)
20M20.00 mi1.36 mi22568-21413475-7913475-7924096(Top 83%)14041(Top 86%)14041(Top 245%)
21M21.00 mi1.00 mi22608-4013483-813483-823436(Top 81%)13690(Top 84%)13690(Top 239%)
35K21.75 mi0.75 mi22733-12513527-4413527-4425115(Top 87%)14439(Top 88%)14439(Top 252%)
23M23.00 mi1.25 mi22954-22113619-9213619-9225399(Top 88%)14533(Top 89%)14533(Top 254%)
24M24.00 mi1.00 mi23134-18013703-8413703-8426185(Top 90%)14876(Top 91%)14876(Top 260%)
40K24.85 mi0.85 mi23211-7713735-3213735-3225042(Top 86%)14300(Top 88%)14300(Top 250%)
25.2M25.20 mi0.35 mi23488-27713872-13713872-13728878(Top 100%)16241(Top 99%)16241(Top 284%)
FINISH26.22 mi1.02 mi23461+2713845+2713845+2723551(Top 81%)13570(Top 83%)13570(Top 237%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 75%
×21
+97ft-345ft

Overall

21878

Males

13206

M18-39

13206

5K→10K

3.1 - 6.2 mi

Top 76%
×5
+79ft-138ft

Overall

22068

Males

13288

M18-39

13288

10K→15K

6.2 - 9.3 mi

Top 75%
×3
+67ft-78ft

Overall

21878

Males

13206

M18-39

13206

15K→20K

9.3 - 12.4 mi

Top 74%
×5
+106ft-86ft

Overall

21499

Males

13005

M18-39

13005

20K→HALF

12.4 - 13.1 mi

Top 79%
×2
+19ft-37ft

Overall

22837

Males

13669

M18-39

13669

HALF→25K

13.1 - 15.5 mi

Top 80%
×4
+66ft-88ft

Overall

23125

Males

13766

M18-39

13766

25K→30K

15.5 - 18.6 mi

Top 81%
×9
+181ft-148ft

Overall

23514

Males

13850

M18-39

13850

30K→20M

18.6 - 20.0 mi

Top 83%
×5
+64ft-50ft

Overall

24096

Males

14041

M18-39

14041

20M→21M

20.0 - 21.0 mi

Top 81%
×8
+106ft-24ft

Overall

23436

Males

13690

M18-39

13690

21M→35K

21.0 - 21.8 mi

Top 87%
×7
+17ft-86ft

Overall

25115

Males

14439

M18-39

14439

35K→23M

21.8 - 23.0 mi

Top 88%
×5
+23ft-63ft

Overall

25399

Males

14533

M18-39

14533

23M→24M

23.0 - 24.0 mi

Top 90%
×6
+12ft-82ft

Overall

26185

Males

14876

M18-39

14876

24M→40K

24.0 - 24.9 mi

Top 86%
×1
+6ft-20ft

Overall

25042

Males

14300

M18-39

14300

40K→25.2M

24.9 - 25.2 mi

Top 100%
×1
+13ft-16ft

Overall

28878

Males

16241

M18-39

16241

25.2M→FINISH

25.2 - 26.2 mi

Top 81%
×2
+22ft-21ft

Overall

23551

Males

13570

M18-39

13570

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
787
Passed By
2154
Net Change
-2472
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20989
5K → 10K89200-593#20989#21582
10K → 15K134200-86#21582#21668
15K → 20K198123+75#21668#21593
20K → HALF1468-54#21593#21647
HALF → 25K58200-287#21647#21934
25K → 30K75200-420#21934#22354
30K → 20M36200-214#22354#22568
20M → 21M5393-40#22568#22608
21M → 35K14139-125#22608#22733
35K → 23M15200-221#22733#22954
23M → 24M13193-180#22954#23134
24M → 40K31108-77#23134#23211
40K → 25.2M0200-277#23211#23488
25.2M → FINISH5730+27#23488#23461
TOTALS7872154-2472
📊

Passing Analysis Visualizations

Explore your passing analysis through 5 different visualizations. Scroll to discover each one.

Time:
Category:

📈Position Graph

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🎨Heatmap Timeline

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Qualifying & Age Grade

See how your performance stacks up against qualifying standards

OTQ

Olympic Trials Qualifying analysis available

Activity Data

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Export & Support

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing