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BOSTON MARATHON 2026

Zach Treadwell

Bib: 13824•M

CA

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0:00
0:00
/ mi
Masters
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Overall
#0 / 29021
Gender (Male)
#0 / 16340
Masters (Masters Men)
#0 / 10617
Age Group (M50-54)
#0 / 1868
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
26:10
3.11 mi
Rank: #19633
Start → 5K
26:10 | 8:26/mi
10K
51:43
6.21 mi
Rank: #19157 (+476)
5K → 10K
25:33 | 8:14/mi
15K
1:17:35
9.32 mi
Rank: #19138 (+19)
10K → 15K
25:52 | 8:20/mi
20K
1:42:55
12.43 mi
Rank: #18640 (+498)
15K → 20K
25:20 | 8:10/mi
HALF
1:48:24
13.11 mi
Rank: #18577 (+63)
20K → HALF
5:29 | 8:03/mi
25K
2:07:37
15.53 mi
Rank: #18041 (+536)
HALF → 25K
19:13 | 7:56/mi
30K
2:33:13
18.64 mi
Rank: #17507 (+534)
25K → 30K
25:36 | 8:15/mi
20M
2:44:35
20.00 mi
Rank: #17345 (+162)
30K → 20M
11:22 | 8:23/mi
21M
2:53:57
21.00 mi
Rank: #17358 (-13)
20M → 21M
9:22 | 9:22/mi
35K
3:00:01
21.75 mi
Rank: #17261 (+97)
21M → 35K
6:04 | 8:07/mi
23M
3:11:03
23.00 mi
Rank: #17249 (+12)
35K → 23M
11:02 | 8:49/mi
24M
3:19:29
24.00 mi
Rank: #17193 (+56)
23M → 24M
8:26 | 8:26/mi
40K
3:27:23
24.85 mi
Rank: #17273 (-80)
24M → 40K
7:54 | 9:15/mi
25.2M
3:30:51
25.20 mi
Rank: #17318 (-45)
40K → 25.2M
3:28 | 10:04/mi
FINISH
3:40:29
26.22 mi
Rank: #17585 (-267)
25.2M → FINISH
9:38 | 9:28/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:48:24
Pace8:17 /mi
2nd Half
Distance13.11 mi
Time1:52:05
Pace8:33 /mi
📊Positive Split: 3.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:07:2326:108:2626:10
8:26
-
10K
6.21 mi11:32:5651:438:2025:33
8:14
-0:12
15K
9.32 mi11:58:481:17:358:2025:52
8:20
+0:06
20K
12.43 mi12:24:081:42:558:1725:20
8:10
-0:10
HALF
13.11 mi12:29:371:48:248:175:29
8:03
-0:07
25K
15.53 mi12:48:502:07:378:1319:13
7:56
-0:07
30K
18.64 mi13:14:262:33:138:1425:36
8:15
+0:19
20M
20.00 mi13:25:482:44:358:1411:22
8:23
+0:08
21M
21.00 mi13:35:102:53:578:189:22
9:22
+0:59
35K
21.75 mi13:41:143:00:018:176:04
8:07
-1:15
23M
23.00 mi13:52:163:11:038:1911:02
8:49
+0:42
24M
24.00 mi14:00:423:19:298:198:26
8:26
-0:23
40K
24.85 mi14:08:363:27:238:217:54
9:15
+0:49
25.2M
25.20 mi14:12:043:30:518:233:28
10:04
+0:49
FINISH
26.22 mi14:21:423:40:298:259:38
9:28
-0:36

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

7:56 /mi

Average Pace

8:25 /mi

Slowest Pace

10:04 /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

24:42

11% of race

Time at Steady Pace

2:34:23

70% of race

Time at Slower Pace

41:24

19% of race

Average Pace: 8:25 /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 mi11:07:2326:108:2626:10
8:26
#19633
10K
6.21 mi11:32:5651:438:2025:33
8:14
#19157
15K
9.32 mi11:58:481:17:358:2025:52
8:20
#19138
20K
12.43 mi12:24:081:42:558:1725:20
8:10
#18640
HALF
13.11 mi12:29:371:48:248:175:29
8:03
#18577
25K
15.53 mi12:48:502:07:378:1319:13
7:56
#18041
30K
18.64 mi13:14:262:33:138:1425:36
8:15
#17507
20M
20.00 mi13:25:482:44:358:1411:22
8:23
#17345
21M
21.00 mi13:35:102:53:578:189:22
9:22
#17358
35K
21.75 mi13:41:143:00:018:176:04
8:07
#17261
23M
23.00 mi13:52:163:11:038:1911:02
8:49
#17249
24M
24.00 mi14:00:423:19:298:198:26
8:26
#17193
40K
24.85 mi14:08:363:27:238:217:54
9:15
#17273
25.2M
25.20 mi14:12:043:30:518:233:28
10:04
#17318
FINISH
26.22 mi14:21:423:40:298:259:38
9:28
#17585
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi19633121131211319122(Top 66%)11931(Top 73%)11931(Top 639%)
10K6.21 mi3.10 mi19157+47611921+19211921+19218697(Top 64%)11765(Top 72%)11765(Top 630%)
15K9.32 mi3.11 mi19138+1911924-311924-319122(Top 66%)11931(Top 73%)11931(Top 639%)
20K12.43 mi3.11 mi18640+49811707+21711707+21717196(Top 59%)11092(Top 68%)11092(Top 594%)
HALF13.11 mi0.68 mi18577+6311681+2611681+2617383(Top 60%)11174(Top 68%)11174(Top 598%)
25K15.53 mi2.42 mi18041+53611446+23511446+23514783(Top 51%)9982(Top 61%)9982(Top 534%)
30K18.64 mi3.11 mi17507+53411193+25311193+25315192(Top 52%)10065(Top 62%)10065(Top 539%)
20M20.00 mi1.36 mi17345+16211107+8611107+8615337(Top 53%)10025(Top 61%)10025(Top 537%)
21M21.00 mi1.00 mi17358-1311091+1611091+1617919(Top 62%)11105(Top 68%)11105(Top 594%)
35K21.75 mi0.75 mi17261+9711029+6211029+6215203(Top 52%)9862(Top 60%)9862(Top 528%)
23M23.00 mi1.25 mi17249+1210996+3310996+3317512(Top 60%)10756(Top 66%)10756(Top 576%)
24M24.00 mi1.00 mi17193+5610949+4710949+4716490(Top 57%)10256(Top 63%)10256(Top 549%)
40K24.85 mi0.85 mi17273-8010965-1610965-1619417(Top 67%)11553(Top 71%)11553(Top 618%)
25.2M25.20 mi0.35 mi17318-4510976-1110976-1119550(Top 67%)11626(Top 71%)11626(Top 622%)
FINISH26.22 mi1.02 mi17585-26711067-9111067-9122177(Top 76%)12932(Top 79%)12932(Top 692%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 66%
×21
+97ft-345ft

Overall

19122

Males

11931

M50-54

11931

5K→10K

3.1 - 6.2 mi

Top 64%
×5
+79ft-138ft

Overall

18697

Males

11765

M50-54

11765

10K→15K

6.2 - 9.3 mi

Top 66%
×3
+67ft-78ft

Overall

19122

Males

11931

M50-54

11931

15K→20K

9.3 - 12.4 mi

Top 59%
×5
+106ft-86ft

Overall

17196

Males

11092

M50-54

11092

20K→HALF

12.4 - 13.1 mi

Top 60%
×2
+19ft-37ft

Overall

17383

Males

11174

M50-54

11174

HALF→25K

13.1 - 15.5 mi

Top 51%
×4
+66ft-88ft

Overall

14783

Males

9982

M50-54

9982

25K→30K

15.5 - 18.6 mi

Top 52%
×9
+181ft-148ft

Overall

15192

Males

10065

M50-54

10065

30K→20M

18.6 - 20.0 mi

Top 53%
×5
+64ft-50ft

Overall

15337

Males

10025

M50-54

10025

20M→21M

20.0 - 21.0 mi

Top 62%
×8
+106ft-24ft

Overall

17919

Males

11105

M50-54

11105

21M→35K

21.0 - 21.8 mi

Top 52%
×7
+17ft-86ft

Overall

15203

Males

9862

M50-54

9862

35K→23M

21.8 - 23.0 mi

Top 60%
×5
+23ft-63ft

Overall

17512

Males

10756

M50-54

10756

23M→24M

23.0 - 24.0 mi

Top 57%
×6
+12ft-82ft

Overall

16490

Males

10256

M50-54

10256

24M→40K

24.0 - 24.9 mi

Top 67%
×1
+6ft-20ft

Overall

19417

Males

11553

M50-54

11553

40K→25.2M

24.9 - 25.2 mi

Top 67%
×1
+13ft-16ft

Overall

19550

Males

11626

M50-54

11626

25.2M→FINISH

25.2 - 26.2 mi

Top 76%
×2
+22ft-21ft

Overall

22177

Males

12932

M50-54

12932

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
3091
Passed By
1043
Net Change
+2048
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19633
5K → 10K587111+476#19633#19157
10K → 15K184165+19#19157#19138
15K → 20K51113+498#19138#18640
20K → HALF707+63#18640#18577
HALF → 25K5382+536#18577#18041
25K → 30K54713+534#18041#17507
30K → 20M18422+162#17507#17345
20M → 21M8396-13#17345#17358
21M → 35K10710+97#17358#17261
35K → 23M10391+12#17261#17249
23M → 24M9943+56#17249#17193
24M → 40K44124-80#17193#17273
40K → 25.2M2065-45#17273#17318
25.2M → FINISH14281-267#17318#17585
TOTALS30911043+2048
📊

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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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing