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BOSTON MARATHON 2026

Brent Simmons

Bib: 12379•M

NC

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0:00
0:00
/ mi
Masters
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Overall
#0 / 29021
Top 42%
Gender (Male)
#0 / 16340
Masters (Masters Men)
#0 / 10617
Top 44%
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
21:59
3.11 mi
Rank: #9161
Start → 5K
21:59 | 7:05/mi
10K
43:52
6.21 mi
Rank: #9043 (+118)
5K → 10K
21:53 | 7:03/mi
15K
1:06:16
9.32 mi
Rank: #9364 (-321)
10K → 15K
22:24 | 7:13/mi
20K
1:29:03
12.43 mi
Rank: #9574 (-210)
15K → 20K
22:47 | 7:20/mi
HALF
1:34:00
13.11 mi
Rank: #9644 (-70)
20K → HALF
4:57 | 7:16/mi
25K
1:52:07
15.53 mi
Rank: #9875 (-231)
HALF → 25K
18:07 | 7:29/mi
30K
2:16:49
18.64 mi
Rank: #10419 (-544)
25K → 30K
24:42 | 7:58/mi
20M
2:27:58
20.00 mi
Rank: #10738 (-319)
30K → 20M
11:09 | 8:13/mi
21M
2:37:02
21.00 mi
Rank: #11130 (-392)
20M → 21M
9:04 | 9:04/mi
35K
2:43:11
21.75 mi
Rank: #11275 (-145)
21M → 35K
6:09 | 8:14/mi
23M
2:53:51
23.00 mi
Rank: #11568 (-293)
35K → 23M
10:40 | 8:32/mi
24M
3:02:11
24.00 mi
Rank: #11765 (-197)
23M → 24M
8:20 | 8:20/mi
40K
3:09:25
24.85 mi
Rank: #11900 (-135)
24M → 40K
7:14 | 8:28/mi
25.2M
3:12:44
25.20 mi
Rank: #12027 (-127)
40K → 25.2M
3:19 | 9:38/mi
FINISH
3:20:39
26.22 mi
Rank: #12063 (-36)
25.2M → FINISH
7:55 | 7:47/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:34:00
Pace7:11 /mi
2nd Half
Distance13.11 mi
Time1:46:39
Pace8:09 /mi
📊Positive Split: 13.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:1221:597:0521:59
7:05
-
10K
6.21 mi11:12:0543:527:0421:53
7:03
-0:02
15K
9.32 mi11:34:291:06:167:0722:24
7:13
+0:10
20K
12.43 mi11:57:161:29:037:1022:47
7:20
+0:07
HALF
13.11 mi12:02:131:34:007:114:57
7:16
-0:04
25K
15.53 mi12:20:201:52:077:1418:07
7:29
+0:13
30K
18.64 mi12:45:022:16:497:2124:42
7:58
+0:29
20M
20.00 mi12:56:112:27:587:2411:09
8:13
+0:15
21M
21.00 mi13:05:152:37:027:299:04
9:04
+0:51
35K
21.75 mi13:11:242:43:117:316:09
8:14
-0:50
23M
23.00 mi13:22:042:53:517:3410:40
8:32
+0:18
24M
24.00 mi13:30:243:02:117:368:20
8:20
-0:12
40K
24.85 mi13:37:383:09:257:387:14
8:28
+0:08
25.2M
25.20 mi13:40:573:12:447:393:19
9:38
+1:10
FINISH
26.22 mi13:48:523:20:397:407:55
7:47
-1:51

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

7:03 /mi

Average Pace

7:40 /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

1:52:07

56% of race

Time at Steady Pace

58:15

29% of race

Time at Slower Pace

30:17

15% of race

Average Pace: 7:39 /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 mi10:50:1221:597:0521:59
7:05
#9161
10K
6.21 mi11:12:0543:527:0421:53
7:03
#9043
15K
9.32 mi11:34:291:06:167:0722:24
7:13
#9364
20K
12.43 mi11:57:161:29:037:1022:47
7:20
#9574
HALF
13.11 mi12:02:131:34:007:114:57
7:16
#9644
25K
15.53 mi12:20:201:52:077:1418:07
7:29
#9875
30K
18.64 mi12:45:022:16:497:2124:42
7:58
#10419
20M
20.00 mi12:56:112:27:587:2411:09
8:13
#10738
21M
21.00 mi13:05:152:37:027:299:04
9:04
#11130
35K
21.75 mi13:11:242:43:117:316:09
8:14
#11275
23M
23.00 mi13:22:042:53:517:3410:40
8:32
#11568
24M
24.00 mi13:30:243:02:117:368:20
8:20
#11765
40K
24.85 mi13:37:383:09:257:387:14
8:28
#11900
25.2M
25.20 mi13:40:573:12:447:393:19
9:38
#12027
FINISH
26.22 mi13:48:523:20:397:407:55
7:47
#12063
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 mi91617656765610220(Top 35%)8123(Top 50%)8123(Top 337%)
10K6.21 mi3.10 mi9043+1187555+1017555+1019004(Top 31%)7501(Top 46%)7501(Top 311%)
15K9.32 mi3.11 mi9364-3217726-1717726-17110220(Top 35%)8123(Top 50%)8123(Top 337%)
20K12.43 mi3.11 mi9574-2107822-967822-9610475(Top 36%)8151(Top 50%)8151(Top 338%)
HALF13.11 mi0.68 mi9644-707850-287850-2810832(Top 37%)8414(Top 51%)8414(Top 349%)
25K15.53 mi2.42 mi9875-2317933-837933-8311171(Top 38%)8406(Top 51%)8406(Top 348%)
30K18.64 mi3.11 mi10419-5448133-2008133-20013103(Top 45%)9163(Top 56%)9163(Top 380%)
20M20.00 mi1.36 mi10738-3198263-1308263-13014293(Top 49%)9588(Top 59%)9588(Top 397%)
21M21.00 mi1.00 mi11130-3928427-1648427-16416427(Top 57%)10431(Top 64%)10431(Top 432%)
35K21.75 mi0.75 mi11275-1458503-768503-7615884(Top 55%)10123(Top 62%)10123(Top 420%)
23M23.00 mi1.25 mi11568-2938614-1118614-11115823(Top 55%)10025(Top 61%)10025(Top 415%)
24M24.00 mi1.00 mi11765-1978667-538667-5315875(Top 55%)9978(Top 61%)9978(Top 414%)
40K24.85 mi0.85 mi11900-1358691-248691-2415364(Top 53%)9668(Top 59%)9668(Top 401%)
25.2M25.20 mi0.35 mi12027-1278735-448735-4417773(Top 61%)10777(Top 66%)10777(Top 447%)
FINISH26.22 mi1.02 mi12063-368723+128723+1213498(Top 47%)8787(Top 54%)8787(Top 364%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 35%
×21
+97ft-345ft

Overall

10220

Males

8123

M45-49

8123

5K→10K

3.1 - 6.2 mi

Top 31%
×5
+79ft-138ft

Overall

9004

Males

7501

M45-49

7501

10K→15K

6.2 - 9.3 mi

Top 35%
×3
+67ft-78ft

Overall

10220

Males

8123

M45-49

8123

15K→20K

9.3 - 12.4 mi

Top 36%
×5
+106ft-86ft

Overall

10475

Males

8151

M45-49

8151

20K→HALF

12.4 - 13.1 mi

Top 37%
×2
+19ft-37ft

Overall

10832

Males

8414

M45-49

8414

HALF→25K

13.1 - 15.5 mi

Top 38%
×4
+66ft-88ft

Overall

11171

Males

8406

M45-49

8406

25K→30K

15.5 - 18.6 mi

Top 45%
×9
+181ft-148ft

Overall

13103

Males

9163

M45-49

9163

30K→20M

18.6 - 20.0 mi

Top 49%
×5
+64ft-50ft

Overall

14293

Males

9588

M45-49

9588

20M→21M

20.0 - 21.0 mi

Top 57%
×8
+106ft-24ft

Overall

16427

Males

10431

M45-49

10431

21M→35K

21.0 - 21.8 mi

Top 55%
×7
+17ft-86ft

Overall

15884

Males

10123

M45-49

10123

35K→23M

21.8 - 23.0 mi

Top 55%
×5
+23ft-63ft

Overall

15823

Males

10025

M45-49

10025

23M→24M

23.0 - 24.0 mi

Top 55%
×6
+12ft-82ft

Overall

15875

Males

9978

M45-49

9978

24M→40K

24.0 - 24.9 mi

Top 53%
×1
+6ft-20ft

Overall

15364

Males

9668

M45-49

9668

40K→25.2M

24.9 - 25.2 mi

Top 61%
×1
+13ft-16ft

Overall

17773

Males

10777

M45-49

10777

25.2M→FINISH

25.2 - 26.2 mi

Top 47%
×2
+22ft-21ft

Overall

13498

Males

8787

M45-49

8787

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
870*
Passed By
2435
Net Change
-2902
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9161
5K → 10K282*164+118#9161#9043
10K → 15K52200-321#9043#9364
15K → 20K85200-210#9364#9574
20K → HALF1080-70#9574#9644
HALF → 25K59200-231#9644#9875
25K → 30K85200-544#9875#10419
30K → 20M29200-319#10419#10738
20M → 21M35200-392#10738#11130
21M → 35K21166-145#11130#11275
35K → 23M40200-293#11275#11568
23M → 24M45200-197#11568#11765
24M → 40K48183-135#11765#11900
40K → 25.2M13140-127#11900#12027
25.2M → FINISH66102-36#12027#12063
TOTALS870*2435-2902

* 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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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing