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BOSTON MARATHON 2023

Jason Gundrum

Bib: 10436•M

WI

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 23%
Gender (Male)
#0 / 15176
Top 36%
Masters (Masters Men)
#0 / 9891
Top 22%
Division (M45-49)
#0 / 2252
Top 28%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:55
Rank: #6585
Start → 5K
21:55 | 7:03/mi
10K· 6.21 mi
42:40
Rank: #5561 (+1024)
5K → 10K
20:45 | 6:41/mi
15K· 9.32 mi
1:03:40
Rank: #5274 (+287)
10K → 15K
21:00 | 6:46/mi
20K· 12.43 mi
1:24:49
Rank: #5079 (+195)
15K → 20K
21:09 | 6:48/mi
Half· 13.11 mi
1:29:25
Rank: #5068 (+11)
20K → Half
4:36 | 6:45/mi
25K· 15.53 mi
1:45:55
Rank: #4876 (+192)
Half → 25K
16:30 | 6:48/mi
30K· 18.64 mi
2:07:44
Rank: #4775 (+101)
25K → 30K
21:49 | 7:01/mi
20M
2:17:26
Rank: #4770 (+5)
30K → 20M
9:42 | 7:08/mi
21M
2:24:57
Rank: #4752 (+18)
20M → 21M
7:31 | 7:31/mi
35K· 21.75 mi
2:30:07
Rank: #4739 (+13)
21M → 35K
5:10 | 6:54/mi
23M
2:39:51
Rank: #4919 (-180)
35K → 23M
9:44 | 7:46/mi
24M
2:48:54
Rank: #5380 (-461)
23M → 24M
9:03 | 9:03/mi
40K· 24.85 mi
2:56:44
Rank: #5706 (-326)
24M → 40K
7:50 | 9:10/mi
25.2M
2:59:58
Rank: #5799 (-93)
40K → 25.2M
3:14 | 9:23/mi
Finish· 26.22 mi
3:08:42
Rank: #6111 (-312)
25.2M → Finish
8:44 | 8:34/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:29:25
Pace6:49 /mi
2nd Half
Distance13.11 mi
Time1:39:17
Pace7:34 /mi
📊Positive Split: 11.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:48:0021:557:0321:55
7:03
-
10K
6.21 mi11:08:4542:406:5220:45
6:41
-0:22
15K
9.32 mi11:29:451:03:406:5021:00
6:46
+0:05
20K
12.43 mi11:50:541:24:496:4921:09
6:48
+0:02
Half
13.11 mi11:55:301:29:256:494:36
6:45
-0:03
25K
15.53 mi12:12:001:45:556:4916:30
6:48
+0:03
30K
18.64 mi12:33:492:07:446:5121:49
7:01
+0:13
20M
20.00 mi12:43:312:17:266:529:42
7:08
+0:07
21M
21.00 mi12:51:022:24:576:547:31
7:31
+0:23
35K
21.75 mi12:56:122:30:076:545:10
6:54
-0:37
23M
23.00 mi13:05:562:39:516:579:44
7:46
+0:52
24M
24.00 mi13:14:592:48:547:029:03
9:03
+1:17
40K
24.85 mi13:22:492:56:447:077:50
9:10
+0:07
25.2M
25.20 mi13:26:032:59:587:083:14
9:23
+0:13
Finish
26.22 mi13:34:473:08:427:128:44
8:34
-0:49

Checkpoints & Pacing

📈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

6:41 /mi

Average Pace

7:12 /mi

Slowest Pace

9:23 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

2:30:07

80% of race

Time at Slower Pace

38:35

20% of race

Average Pace: 7:12 /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

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi10:48:0021:557:0321:55
7:03
#6585
10K
6.21 mi11:08:4542:406:5220:45
6:41
#5561
15K
9.32 mi11:29:451:03:406:5021:00
6:46
#5274
20K
12.43 mi11:50:541:24:496:4921:09
6:48
#5079
Half
13.11 mi11:55:301:29:256:494:36
6:45
#5068
25K
15.53 mi12:12:001:45:556:4916:30
6:48
#4876
30K
18.64 mi12:33:492:07:446:5121:49
7:01
#4775
20M
20.00 mi12:43:312:17:266:529:42
7:08
#4770
21M
21.00 mi12:51:022:24:576:547:31
7:31
#4752
35K
21.75 mi12:56:122:30:076:545:10
6:54
#4739
23M
23.00 mi13:05:562:39:516:579:44
7:46
#4919
24M
24.00 mi13:14:592:48:547:029:03
9:03
#5380
40K
24.85 mi13:22:492:56:447:077:50
9:10
#5706
25.2M
25.20 mi13:26:032:59:587:083:14
9:23
#5799
Finish
26.22 mi13:34:473:08:427:128:44
8:34
#6111
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi6585595059504718(Top 18%)4403(Top 29%)4403(Top 196%)
10K6.21 mi3.10 mi5561+10245125+8255125+8254161(Top 16%)3905(Top 26%)3905(Top 173%)
15K9.32 mi3.11 mi5274+2874885+2404885+2404718(Top 18%)4403(Top 29%)4403(Top 196%)
20K12.43 mi3.11 mi5079+1954716+1694716+1694522(Top 17%)4218(Top 28%)4218(Top 187%)
Half13.11 mi0.68 mi5068+114706+104706+104811(Top 18%)4473(Top 29%)4473(Top 199%)
25K15.53 mi2.42 mi4876+1924533+1734533+1734223(Top 16%)3954(Top 26%)3954(Top 176%)
30K18.64 mi3.11 mi4775+1014446+874446+874505(Top 17%)4173(Top 27%)4173(Top 185%)
20M20.00 mi1.36 mi4770+54437+94437+94817(Top 18%)4397(Top 29%)4397(Top 195%)
21M21.00 mi1.00 mi4752+184424+134424+134673(Top 18%)4239(Top 28%)4239(Top 188%)
35K21.75 mi0.75 mi4739+134408+164408+164827(Top 18%)4363(Top 29%)4363(Top 194%)
23M23.00 mi1.25 mi4919-1804552-1444552-1448197(Top 31%)6515(Top 43%)6515(Top 289%)
24M24.00 mi1.00 mi5380-4614927-3754927-37517422(Top 65%)10803(Top 71%)10803(Top 480%)
40K24.85 mi0.85 mi5706-3265172-2455172-24516882(Top 63%)10518(Top 69%)10518(Top 467%)
25.2M25.20 mi0.35 mi5799-935239-675239-6714468(Top 54%)9424(Top 62%)9424(Top 418%)
Finish26.22 mi1.02 mi6111-3125461-2225461-22215780(Top 59%)10064(Top 66%)10064(Top 447%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 18%
×21stories
+97ft-345ft

Overall

4718

Males

4403

M45-49

4403

5K→10K

3.1 - 6.2 mi

Top 16%
×5stories
+79ft-138ft

Overall

4161

Males

3905

M45-49

3905

10K→15K

6.2 - 9.3 mi

Top 18%
×3stories
+67ft-78ft

Overall

4718

Males

4403

M45-49

4403

15K→20K

9.3 - 12.4 mi

Top 17%
×5stories
+106ft-86ft

Overall

4522

Males

4218

M45-49

4218

20K→Half

12.4 - 13.1 mi

Top 18%
×2stories
+19ft-37ft

Overall

4811

Males

4473

M45-49

4473

Half→25K

13.1 - 15.5 mi

Top 16%
×4stories
+66ft-88ft

Overall

4223

Males

3954

M45-49

3954

25K→30K

15.5 - 18.6 mi

Top 17%
×9stories
+181ft-148ft

Overall

4505

Males

4173

M45-49

4173

30K→20M

18.6 - 20.0 mi

Top 18%
×5stories
+64ft-50ft

Overall

4817

Males

4397

M45-49

4397

20M→21M

20.0 - 21.0 mi

Top 18%
×8stories
+106ft-24ft

Overall

4673

Males

4239

M45-49

4239

21M→35K

21.0 - 21.8 mi

Top 18%
×7stories
+17ft-86ft

Overall

4827

Males

4363

M45-49

4363

35K→23M

21.8 - 23.0 mi

Top 31%
×5stories
+23ft-63ft

Overall

8197

Males

6515

M45-49

6515

23M→24M

23.0 - 24.0 mi

Top 65%
×6stories
+12ft-82ft

Overall

17422

Males

10803

M45-49

10803

24M→40K

24.0 - 24.9 mi

Top 63%
×1story
+6ft-20ft

Overall

16882

Males

10518

M45-49

10518

40K→25.2M

24.9 - 25.2 mi

Top 54%
×1story
+13ft-16ft

Overall

14468

Males

9424

M45-49

9424

25.2M→Finish

25.2 - 26.2 mi

Top 59%
×2stories
+22ft-21ft

Overall

15780

Males

10064

M45-49

10064

Passing Analysis

Category:
Athletes Passed
2231
Passed By
1757
Net Change
+474
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6585
5K → 10K10328+1024#6585#5561
10K → 15K30821+287#5561#5274
15K → 20K23035+195#5274#5079
20K → Half3019+11#5079#5068
Half → 25K20513+192#5068#4876
25K → 30K18988+101#4876#4775
30K → 20M6661+5#4775#4770
20M → 21M6547+18#4770#4752
21M → 35K4633+13#4752#4739
35K → 23M38218-180#4739#4919
23M → 24M4465-461#4919#5380
24M → 40K6332-326#5380#5706
40K → 25.2M497-93#5706#5799
25.2M → Finish8320-312#5799#6111
TOTALS22311757+474
📊

Passing Visuals

Category:
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🔥Passing Intensity

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing