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BOSTON MARATHON 2023

Jeff Kirchick

Bib: 26928•M

MA

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Division (M18-39)
#0 / 5285
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:17
Rank: #9578
Start → 5K
23:17 | 7:30/mi
10K· 6.21 mi
47:00
Rank: #10589 (-1011)
5K → 10K
23:43 | 7:38/mi
15K· 9.32 mi
1:10:52
Rank: #10951 (-362)
10K → 15K
23:52 | 7:41/mi
20K· 12.43 mi
1:35:17
Rank: #11244 (-293)
15K → 20K
24:25 | 7:52/mi
Half· 13.11 mi
1:40:47
Rank: #11437 (-193)
20K → Half
5:30 | 8:04/mi
25K· 15.53 mi
2:00:47
Rank: #11963 (-526)
Half → 25K
20:00 | 8:15/mi
30K· 18.64 mi
2:27:51
Rank: #12745 (-782)
25K → 30K
27:04 | 8:43/mi
20M
2:40:11
Rank: #13113 (-368)
30K → 20M
12:20 | 9:05/mi
21M
2:49:31
Rank: #13228 (-115)
20M → 21M
9:20 | 9:20/mi
35K· 21.75 mi
2:56:13
Rank: #13429 (-201)
21M → 35K
6:42 | 8:57/mi
23M
3:07:40
Rank: #13659 (-230)
35K → 23M
11:27 | 9:09/mi
24M
3:16:48
Rank: #13874 (-215)
23M → 24M
9:08 | 9:08/mi
40K· 24.85 mi
3:24:45
Rank: #14036 (-162)
24M → 40K
7:57 | 9:18/mi
25.2M
3:28:05
Rank: #14071 (-35)
40K → 25.2M
3:20 | 9:40/mi
Finish· 26.22 mi
3:36:53
Rank: #14151 (-80)
25.2M → Finish
8:48 | 8:38/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:40:47
Pace7:41 /mi
2nd Half
Distance13.11 mi
Time1:56:06
Pace8:51 /mi
📊Positive Split: 15.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:39:3223:177:3023:17
7:30
-
10K
6.21 mi12:03:1547:007:3423:43
7:38
+0:08
15K
9.32 mi12:27:071:10:527:3623:52
7:41
+0:03
20K
12.43 mi12:51:321:35:177:4024:25
7:52
+0:11
Half
13.11 mi12:57:021:40:477:415:30
8:04
+0:12
25K
15.53 mi13:17:022:00:477:4720:00
8:15
+0:11
30K
18.64 mi13:44:062:27:517:5627:04
8:43
+0:28
20M
20.00 mi13:56:262:40:118:0112:20
9:05
+0:22
21M
21.00 mi14:05:462:49:318:049:20
9:20
+0:15
35K
21.75 mi14:12:282:56:138:066:42
8:57
-0:23
23M
23.00 mi14:23:553:07:408:1011:27
9:09
+0:12
24M
24.00 mi14:33:033:16:488:129:08
9:08
-0:01
40K
24.85 mi14:41:003:24:458:147:57
9:18
+0:10
25.2M
25.20 mi14:44:203:28:058:153:20
9:40
+0:22
Finish
26.22 mi14:53:083:36:538:178:48
8:38
-1:02

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

7:30 /mi

Average Pace

8:17 /mi

Slowest Pace

9:40 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:00:47

56% of race

Time at Steady Pace

42:34

20% of race

Time at Slower Pace

53:32

25% of race

Average Pace: 8:16 /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 mi11:39:3223:177:3023:17
7:30
#9578
10K
6.21 mi12:03:1547:007:3423:43
7:38
#10589
15K
9.32 mi12:27:071:10:527:3623:52
7:41
#10951
20K
12.43 mi12:51:321:35:177:4024:25
7:52
#11244
Half
13.11 mi12:57:021:40:477:415:30
8:04
#11437
25K
15.53 mi13:17:022:00:477:4720:00
8:15
#11963
30K
18.64 mi13:44:062:27:517:5627:04
8:43
#12745
20M
20.00 mi13:56:262:40:118:0112:20
9:05
#13113
21M
21.00 mi14:05:462:49:318:049:20
9:20
#13228
35K
21.75 mi14:12:282:56:138:066:42
8:57
#13429
23M
23.00 mi14:23:553:07:408:1011:27
9:09
#13659
24M
24.00 mi14:33:033:16:488:129:08
9:08
#13874
40K
24.85 mi14:41:003:24:458:147:57
9:18
#14036
25.2M
25.20 mi14:44:203:28:058:153:20
9:40
#14071
Finish
26.22 mi14:53:083:36:538:178:48
8:38
#14151
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi95787920792011692(Top 44%)8951(Top 59%)8951(Top 169%)
10K6.21 mi3.10 mi10589-10118463-5438463-54311632(Top 44%)8953(Top 59%)8953(Top 169%)
15K9.32 mi3.11 mi10951-3628630-1678630-16711692(Top 44%)8951(Top 59%)8951(Top 169%)
20K12.43 mi3.11 mi11244-2938761-1318761-13112238(Top 46%)9120(Top 60%)9120(Top 173%)
Half13.11 mi0.68 mi11437-1938836-758836-7514789(Top 56%)10206(Top 67%)10206(Top 193%)
25K15.53 mi2.42 mi11963-5269030-1949030-19414567(Top 55%)9987(Top 66%)9987(Top 189%)
30K18.64 mi3.11 mi12745-7829330-3009330-30015560(Top 58%)10290(Top 68%)10290(Top 195%)
20M20.00 mi1.36 mi13113-3689463-1339463-13316899(Top 63%)10781(Top 71%)10781(Top 204%)
21M21.00 mi1.00 mi13228-1159504-419504-4115152(Top 57%)9987(Top 66%)9987(Top 189%)
35K21.75 mi0.75 mi13429-2019565-619565-6117695(Top 66%)11003(Top 73%)11003(Top 208%)
23M23.00 mi1.25 mi13659-2309629-649629-6416734(Top 63%)10555(Top 70%)10555(Top 200%)
24M24.00 mi1.00 mi13874-2159675-469675-4617781(Top 67%)10963(Top 72%)10963(Top 207%)
40K24.85 mi0.85 mi14036-1629722-479722-4717487(Top 66%)10785(Top 71%)10785(Top 204%)
25.2M25.20 mi0.35 mi14071-359733-119733-1115902(Top 60%)10066(Top 66%)10066(Top 190%)
Finish26.22 mi1.02 mi14151-809745-129745-1216143(Top 61%)10225(Top 67%)10225(Top 193%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 44%
×21stories
+97ft-345ft

Overall

11692

Males

8951

M18-39

8951

5K→10K

3.1 - 6.2 mi

Top 44%
×5stories
+79ft-138ft

Overall

11632

Males

8953

M18-39

8953

10K→15K

6.2 - 9.3 mi

Top 44%
×3stories
+67ft-78ft

Overall

11692

Males

8951

M18-39

8951

15K→20K

9.3 - 12.4 mi

Top 46%
×5stories
+106ft-86ft

Overall

12238

Males

9120

M18-39

9120

20K→Half

12.4 - 13.1 mi

Top 56%
×2stories
+19ft-37ft

Overall

14789

Males

10206

M18-39

10206

Half→25K

13.1 - 15.5 mi

Top 55%
×4stories
+66ft-88ft

Overall

14567

Males

9987

M18-39

9987

25K→30K

15.5 - 18.6 mi

Top 58%
×9stories
+181ft-148ft

Overall

15560

Males

10290

M18-39

10290

30K→20M

18.6 - 20.0 mi

Top 63%
×5stories
+64ft-50ft

Overall

16899

Males

10781

M18-39

10781

20M→21M

20.0 - 21.0 mi

Top 57%
×8stories
+106ft-24ft

Overall

15152

Males

9987

M18-39

9987

21M→35K

21.0 - 21.8 mi

Top 66%
×7stories
+17ft-86ft

Overall

17695

Males

11003

M18-39

11003

35K→23M

21.8 - 23.0 mi

Top 63%
×5stories
+23ft-63ft

Overall

16734

Males

10555

M18-39

10555

23M→24M

23.0 - 24.0 mi

Top 67%
×6stories
+12ft-82ft

Overall

17781

Males

10963

M18-39

10963

24M→40K

24.0 - 24.9 mi

Top 66%
×1story
+6ft-20ft

Overall

17487

Males

10785

M18-39

10785

40K→25.2M

24.9 - 25.2 mi

Top 60%
×1story
+13ft-16ft

Overall

15902

Males

10066

M18-39

10066

25.2M→Finish

25.2 - 26.2 mi

Top 61%
×2stories
+22ft-21ft

Overall

16143

Males

10225

M18-39

10225

Passing Analysis

Category:
Athletes Passed
553
Passed By
5125
Net Change
-4573
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9578
5K → 10K551065-1011#9578#10589
10K → 15K79441-362#10589#10951
15K → 20K80373-293#10951#11244
20K → Half3196-193#11244#11437
Half → 25K26552-526#11437#11963
25K → 30K55837-782#11963#12745
30K → 20M33401-368#12745#13113
20M → 21M57172-115#13113#13228
21M → 35K16217-201#13228#13429
35K → 23M33263-230#13429#13659
23M → 24M26241-215#13659#13874
24M → 40K32194-162#13874#14036
40K → 25.2M2358-35#14036#14071
25.2M → Finish35115-80#14071#14151
TOTALS5535125-4573
📊

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