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BOSTON MARATHON 2026

Jonathan Peng

Bib: 12150•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 (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
24:49
3.11 mi
Rank: #16858
Start → 5K
24:49 | 8:00/mi
10K
49:38
6.21 mi
Rank: #16986 (-128)
5K → 10K
24:49 | 8:00/mi
15K
1:14:33
9.32 mi
Rank: #17041 (-55)
10K → 15K
24:55 | 8:02/mi
20K
1:41:14
12.43 mi
Rank: #17814 (-773)
15K → 20K
26:41 | 8:36/mi
HALF
1:47:04
13.11 mi
Rank: #17961 (-147)
20K → HALF
5:50 | 8:34/mi
25K
2:09:10
15.53 mi
Rank: #18615 (-654)
HALF → 25K
22:06 | 9:07/mi
30K
2:38:09
18.64 mi
Rank: #19088 (-473)
25K → 30K
28:59 | 9:20/mi
20M
2:50:39
20.00 mi
Rank: #19175 (-87)
30K → 20M
12:30 | 9:13/mi
21M
3:00:17
21.00 mi
Rank: #19161 (+14)
20M → 21M
9:38 | 9:38/mi
35K
3:06:33
21.75 mi
Rank: #19067 (+94)
21M → 35K
6:16 | 8:23/mi
23M
3:17:19
23.00 mi
Rank: #18892 (+175)
35K → 23M
10:46 | 8:37/mi
24M
3:25:29
24.00 mi
Rank: #18720 (+172)
23M → 24M
8:10 | 8:10/mi
40K
3:32:33
24.85 mi
Rank: #18575 (+145)
24M → 40K
7:04 | 8:16/mi
25.2M
3:35:31
25.20 mi
Rank: #18468 (+107)
40K → 25.2M
2:58 | 8:37/mi
FINISH
3:42:53
26.22 mi
Rank: #18160 (+308)
25.2M → FINISH
7:22 | 7:14/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:47:04
Pace8:11 /mi
2nd Half
Distance13.11 mi
Time1:55:49
Pace8:51 /mi
📊Positive Split: 8.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:48:4124:498:0024:49
8:00
-
10K
6.21 mi12:13:3049:388:0024:49
8:00
0:00
15K
9.32 mi12:38:251:14:338:0024:55
8:02
+0:02
20K
12.43 mi13:05:061:41:148:0926:41
8:36
+0:34
HALF
13.11 mi13:10:561:47:048:115:50
8:34
-0:02
25K
15.53 mi13:33:022:09:108:1922:06
9:07
+0:33
30K
18.64 mi14:02:012:38:098:3028:59
9:20
+0:13
20M
20.00 mi14:14:312:50:398:3212:30
9:13
-0:07
21M
21.00 mi14:24:093:00:178:369:38
9:38
+0:25
35K
21.75 mi14:30:253:06:338:356:16
8:23
-1:15
23M
23.00 mi14:41:113:17:198:3510:46
8:37
+0:14
24M
24.00 mi14:49:213:25:298:348:10
8:10
-0:27
40K
24.85 mi14:56:253:32:338:347:04
8:16
+0:06
25.2M
25.20 mi14:59:233:35:318:342:58
8:37
+0:21
FINISH
26.22 mi15:06:453:42:538:317:22
7:14
-1:23

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

7:14 /mi

Average Pace

8:30 /mi

Slowest Pace

9:38 /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

1:30:05

40% of race

Time at Steady Pace

59:35

27% of race

Time at Slower Pace

1:13:13

33% of race

Average Pace: 8:30 /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 mi11:48:4124:498:0024:49
8:00
#16858
10K
6.21 mi12:13:3049:388:0024:49
8:00
#16986
15K
9.32 mi12:38:251:14:338:0024:55
8:02
#17041
20K
12.43 mi13:05:061:41:148:0926:41
8:36
#17814
HALF
13.11 mi13:10:561:47:048:115:50
8:34
#17961
25K
15.53 mi13:33:022:09:108:1922:06
9:07
#18615
30K
18.64 mi14:02:012:38:098:3028:59
9:20
#19088
20M
20.00 mi14:14:312:50:398:3212:30
9:13
#19175
21M
21.00 mi14:24:093:00:178:369:38
9:38
#19161
35K
21.75 mi14:30:253:06:338:356:16
8:23
#19067
23M
23.00 mi14:41:113:17:198:3510:46
8:37
#18892
24M
24.00 mi14:49:213:25:298:348:10
8:10
#18720
40K
24.85 mi14:56:253:32:338:347:04
8:16
#18575
25.2M
25.20 mi14:59:233:35:318:342:58
8:37
#18468
FINISH
26.22 mi15:06:453:42:538:317:22
7:14
#18160
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 mi16858109541095417156(Top 59%)11089(Top 68%)11089(Top 460%)
10K6.21 mi3.10 mi16986-12810989-3510989-3517132(Top 59%)11073(Top 68%)11073(Top 459%)
15K9.32 mi3.11 mi17041-5511019-3011019-3017156(Top 59%)11089(Top 68%)11089(Top 460%)
20K12.43 mi3.11 mi17814-77311349-33011349-33019786(Top 68%)12191(Top 75%)12191(Top 505%)
HALF13.11 mi0.68 mi17961-14711416-6711416-6720532(Top 71%)12552(Top 77%)12552(Top 520%)
25K15.53 mi2.42 mi18615-65411686-27011686-27021654(Top 75%)13063(Top 80%)13063(Top 541%)
30K18.64 mi3.11 mi19088-47311853-16711853-16721045(Top 73%)12677(Top 78%)12677(Top 525%)
20M20.00 mi1.36 mi19175-8711882-2911882-2919848(Top 68%)12034(Top 74%)12034(Top 499%)
21M21.00 mi1.00 mi19161+1411858+2411858+2419089(Top 66%)11648(Top 71%)11648(Top 483%)
35K21.75 mi0.75 mi19067+9411808+5011808+5016881(Top 58%)10567(Top 65%)10567(Top 438%)
23M23.00 mi1.25 mi18892+17511702+10611702+10616324(Top 56%)10240(Top 63%)10240(Top 424%)
24M24.00 mi1.00 mi18720+17211603+9911603+9914846(Top 51%)9554(Top 58%)9554(Top 396%)
40K24.85 mi0.85 mi18575+14511531+7211531+7214210(Top 49%)9174(Top 56%)9174(Top 380%)
25.2M25.20 mi0.35 mi18468+10711483+4811483+4812288(Top 42%)8270(Top 51%)8270(Top 343%)
FINISH26.22 mi1.02 mi18160+30811328+15511328+1559338(Top 32%)6792(Top 42%)6792(Top 281%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 59%
×21
+97ft-345ft

Overall

17156

Males

11089

M45-49

11089

5K→10K

3.1 - 6.2 mi

Top 59%
×5
+79ft-138ft

Overall

17132

Males

11073

M45-49

11073

10K→15K

6.2 - 9.3 mi

Top 59%
×3
+67ft-78ft

Overall

17156

Males

11089

M45-49

11089

15K→20K

9.3 - 12.4 mi

Top 68%
×5
+106ft-86ft

Overall

19786

Males

12191

M45-49

12191

20K→HALF

12.4 - 13.1 mi

Top 71%
×2
+19ft-37ft

Overall

20532

Males

12552

M45-49

12552

HALF→25K

13.1 - 15.5 mi

Top 75%
×4
+66ft-88ft

Overall

21654

Males

13063

M45-49

13063

25K→30K

15.5 - 18.6 mi

Top 73%
×9
+181ft-148ft

Overall

21045

Males

12677

M45-49

12677

30K→20M

18.6 - 20.0 mi

Top 68%
×5
+64ft-50ft

Overall

19848

Males

12034

M45-49

12034

20M→21M

20.0 - 21.0 mi

Top 66%
×8
+106ft-24ft

Overall

19089

Males

11648

M45-49

11648

21M→35K

21.0 - 21.8 mi

Top 58%
×7
+17ft-86ft

Overall

16881

Males

10567

M45-49

10567

35K→23M

21.8 - 23.0 mi

Top 56%
×5
+23ft-63ft

Overall

16324

Males

10240

M45-49

10240

23M→24M

23.0 - 24.0 mi

Top 51%
×6
+12ft-82ft

Overall

14846

Males

9554

M45-49

9554

24M→40K

24.0 - 24.9 mi

Top 49%
×1
+6ft-20ft

Overall

14210

Males

9174

M45-49

9174

40K→25.2M

24.9 - 25.2 mi

Top 42%
×1
+13ft-16ft

Overall

12288

Males

8270

M45-49

8270

25.2M→FINISH

25.2 - 26.2 mi

Top 32%
×2
+22ft-21ft

Overall

9338

Males

6792

M45-49

6792

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1714*
Passed By
1421
Net Change
-1302
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16858
5K → 10K200200-128#16858#16986
10K → 15K168200-55#16986#17041
15K → 20K36200-773#17041#17814
20K → HALF9156-147#17814#17961
HALF → 25K28200-654#17961#18615
25K → 30K80200-473#18615#19088
30K → 20M74161-87#19088#19175
20M → 21M8773+14#19175#19161
21M → 35K10612+94#19161#19067
35K → 23M1838+175#19067#18892
23M → 24M1797+172#18892#18720
24M → 40K1494+145#18720#18575
40K → 25.2M1070+107#18575#18468
25.2M → FINISH308*0+308#18468#18160
TOTALS1714*1421-1302

* 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