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BOSTON MARATHON 2026

John Byerly

Bib: 10439 •M •Age: N/A

IN

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0:00
0:00
/ mi
Masters
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Overall
#0 / 29021
Top 33%
Gender (Male)
#0 / 16340
Top 46%
Masters (Masters Men)
#0 / 10617
Top 35%
Age Group (M45-49)
#0 / 2413
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
22:41
3.11 mi
Rank: #11041
Start → 5K
22:41 | 7:19/mi
10K
45:57
6.21 mi
Rank: #11916 (-875)
5K → 10K
23:16 | 7:30/mi
15K
1:09:00
9.32 mi
Rank: #11955 (-39)
10K → 15K
23:03 | 7:26/mi
20K
1:32:07
12.43 mi
Rank: #11835 (+120)
15K → 20K
23:07 | 7:27/mi
HALF
1:37:06
13.11 mi
Rank: #11797 (+38)
20K → HALF
4:59 | 7:19/mi
25K
1:54:58
15.53 mi
Rank: #11566 (+231)
HALF → 25K
17:52 | 7:23/mi
30K
2:17:49
18.64 mi
Rank: #10931 (+635)
25K → 30K
22:51 | 7:22/mi
20M
2:27:55
20.00 mi
Rank: #10709 (+222)
30K → 20M
10:06 | 7:27/mi
21M
2:35:42
21.00 mi
Rank: #10535 (+174)
20M → 21M
7:47 | 7:47/mi
35K
2:41:04
21.75 mi
Rank: #10430 (+105)
21M → 35K
5:22 | 7:11/mi
23M
2:50:03
23.00 mi
Rank: #10122 (+308)
35K → 23M
8:59 | 7:11/mi
24M
2:57:13
24.00 mi
Rank: #9948 (+174)
23M → 24M
7:10 | 7:10/mi
40K
3:03:23
24.85 mi
Rank: #9792 (+156)
24M → 40K
6:10 | 7:13/mi
25.2M
3:06:09
25.20 mi
Rank: #9758 (+34)
40K → 25.2M
2:46 | 8:02/mi
FINISH
3:13:24
26.22 mi
Rank: #9671 (+87)
25.2M → FINISH
7:15 | 7:07/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st Half⚖️ Balanced
via HALF
Distance13.11 mi
Time1:37:06
Pace7:25 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:36:18
Pace7:21 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:55:3022:417:1922:41
7:19
-
10K
6.21 mi11:18:4645:577:2423:16
7:30
+0:11
15K
9.32 mi11:41:491:09:007:2523:03
7:26
-0:04
20K
12.43 mi12:04:561:32:077:2523:07
7:27
+0:01
HALF
13.11 mi12:09:551:37:067:254:59
7:19
-0:08
25K
15.53 mi12:27:471:54:587:2517:52
7:23
+0:04
30K
18.64 mi12:50:382:17:497:2422:51
7:22
-0:01
20M
20.00 mi13:00:442:27:557:2410:06
7:27
+0:05
21M
21.00 mi13:08:312:35:427:257:47
7:47
+0:20
35K
21.75 mi13:13:532:41:047:255:22
7:11
-0:36
23M
23.00 mi13:22:522:50:037:248:59
7:11
0:00
24M
24.00 mi13:30:022:57:137:247:10
7:10
-0:01
40K
24.85 mi13:36:123:03:237:236:10
7:13
+0:03
25.2M
25.20 mi13:38:583:06:097:242:46
8:02
+0:49
FINISH
26.22 mi13:46:133:13:247:237:15
7:07
-0:55

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

7:07 /mi

Average Pace

7:23 /mi

Slowest Pace

8:02 /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

3:10:38

99% of race

Time at Steady Pace

2:46

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:23 /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 mi10:55:3022:417:1922:41
7:19
#11041
10K
6.21 mi11:18:4645:577:2423:16
7:30
#11916
15K
9.32 mi11:41:491:09:007:2523:03
7:26
#11955
20K
12.43 mi12:04:561:32:077:2523:07
7:27
#11835
HALF
13.11 mi12:09:551:37:067:254:59
7:19
#11797
25K
15.53 mi12:27:471:54:587:2517:52
7:23
#11566
30K
18.64 mi12:50:382:17:497:2422:51
7:22
#10931
20M
20.00 mi13:00:442:27:557:2410:06
7:27
#10709
21M
21.00 mi13:08:312:35:427:257:47
7:47
#10535
35K
21.75 mi13:13:532:41:047:255:22
7:11
#10430
23M
23.00 mi13:22:522:50:037:248:59
7:11
#10122
24M
24.00 mi13:30:022:57:137:247:10
7:10
#9948
40K
24.85 mi13:36:123:03:237:236:10
7:13
#9792
25.2M
25.20 mi13:38:583:06:097:242:46
8:02
#9758
FINISH
26.22 mi13:46:133:13:247:237:15
7:07
#9671
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi110418614861412097(Top 42%)8963(Top 55%)8963(Top 371%)
10K6.21 mi3.10 mi11916-8758975-3618975-36112816(Top 44%)9316(Top 57%)9316(Top 386%)
15K9.32 mi3.11 mi11955-398975897512097(Top 42%)8963(Top 55%)8963(Top 371%)
20K12.43 mi3.11 mi11835+1208885+908885+9011468(Top 40%)8605(Top 53%)8605(Top 357%)
HALF13.11 mi0.68 mi11797+388860+258860+2511194(Top 39%)8560(Top 52%)8560(Top 355%)
25K15.53 mi2.42 mi11566+2318728+1328728+13210263(Top 35%)7958(Top 49%)7958(Top 330%)
30K18.64 mi3.11 mi10931+6358377+3518377+3518538(Top 29%)6912(Top 42%)6912(Top 286%)
20M20.00 mi1.36 mi10709+2228250+1278250+1278637(Top 30%)6853(Top 42%)6853(Top 284%)
21M21.00 mi1.00 mi10535+1748145+1058145+1058372(Top 29%)6594(Top 40%)6594(Top 273%)
35K21.75 mi0.75 mi10430+1058074+718074+718352(Top 29%)6623(Top 41%)6623(Top 274%)
23M23.00 mi1.25 mi10122+3087882+1927882+1926637(Top 23%)5527(Top 34%)5527(Top 229%)
24M24.00 mi1.00 mi9948+1747783+997783+997635(Top 26%)6054(Top 37%)6054(Top 251%)
40K24.85 mi0.85 mi9792+1567682+1017682+1016824(Top 24%)5517(Top 34%)5517(Top 229%)
25.2M25.20 mi0.35 mi9758+347654+287654+288452(Top 29%)6348(Top 39%)6348(Top 263%)
FINISH26.22 mi1.02 mi9671+877570+847570+848450(Top 29%)6298(Top 39%)6298(Top 261%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 42%
×21
+97ft-345ft

Overall

12097

Males

8963

M45-49

8963

5K→10K

3.1 - 6.2 mi

Top 44%
×5
+79ft-138ft

Overall

12816

Males

9316

M45-49

9316

10K→15K

6.2 - 9.3 mi

Top 42%
×3
+67ft-78ft

Overall

12097

Males

8963

M45-49

8963

15K→20K

9.3 - 12.4 mi

Top 40%
×5
+106ft-86ft

Overall

11468

Males

8605

M45-49

8605

20K→HALF

12.4 - 13.1 mi

Top 39%
×2
+19ft-37ft

Overall

11194

Males

8560

M45-49

8560

HALF→25K

13.1 - 15.5 mi

Top 35%
×4
+66ft-88ft

Overall

10263

Males

7958

M45-49

7958

25K→30K

15.5 - 18.6 mi

Top 29%
×9
+181ft-148ft

Overall

8538

Males

6912

M45-49

6912

30K→20M

18.6 - 20.0 mi

Top 30%
×5
+64ft-50ft

Overall

8637

Males

6853

M45-49

6853

20M→21M

20.0 - 21.0 mi

Top 29%
×8
+106ft-24ft

Overall

8372

Males

6594

M45-49

6594

21M→35K

21.0 - 21.8 mi

Top 29%
×7
+17ft-86ft

Overall

8352

Males

6623

M45-49

6623

35K→23M

21.8 - 23.0 mi

Top 23%
×5
+23ft-63ft

Overall

6637

Males

5527

M45-49

5527

23M→24M

23.0 - 24.0 mi

Top 26%
×6
+12ft-82ft

Overall

7635

Males

6054

M45-49

6054

24M→40K

24.0 - 24.9 mi

Top 24%
×1
+6ft-20ft

Overall

6824

Males

5517

M45-49

5517

40K→25.2M

24.9 - 25.2 mi

Top 29%
×1
+13ft-16ft

Overall

8452

Males

6348

M45-49

6348

25.2M→FINISH

25.2 - 26.2 mi

Top 29%
×2
+22ft-21ft

Overall

8450

Males

6298

M45-49

6298

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
2730*
Passed By
632
Net Change
+1370
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11041
5K → 10K52200-875#11041#11916
10K → 15K148187-39#11916#11955
15K → 20K221*101+120#11955#11835
20K → HALF5113+38#11835#11797
HALF → 25K247*16+231#11797#11566
25K → 30K642*7+635#11566#10931
30K → 20M234*12+222#10931#10709
20M → 21M19420+174#10709#10535
21M → 35K1094+105#10535#10430
35K → 23M313*5+308#10430#10122
23M → 24M183*9+174#10122#9948
24M → 40K16812+156#9948#9792
40K → 25.2M4915+34#9792#9758
25.2M → FINISH11931+87#9758#9671
TOTALS2730*632+1370

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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