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BOSTON MARATHON 2023

Keith Gruchacz

Bib: 852•M

NC

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 9%
Gender (Male)
#0 / 15176
Top 15%
Division (M18-39)
#0 / 5285
Top 34%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
18:44
Rank: #742
Start → 5K
18:44 | 6:02/mi
10K· 6.21 mi
37:34
Rank: #825 (-83)
5K → 10K
18:50 | 6:04/mi
15K· 9.32 mi
56:36
Rank: #874 (-49)
10K → 15K
19:02 | 6:08/mi
20K· 12.43 mi
1:16:01
Rank: #956 (-82)
15K → 20K
19:25 | 6:15/mi
Half· 13.11 mi
1:20:13
Rank: #966 (-10)
20K → Half
4:12 | 6:09/mi
25K· 15.53 mi
1:35:36
Rank: #1004 (-38)
Half → 25K
15:23 | 6:21/mi
30K· 18.64 mi
1:56:12
Rank: #1126 (-122)
25K → 30K
20:36 | 6:38/mi
20M
2:05:51
Rank: #1264 (-138)
30K → 20M
9:39 | 7:06/mi
21M
2:13:59
Rank: #1496 (-232)
20M → 21M
8:08 | 8:08/mi
35K· 21.75 mi
2:19:18
Rank: #1596 (-100)
21M → 35K
5:19 | 7:06/mi
23M
2:29:01
Rank: #1849 (-253)
35K → 23M
9:43 | 7:46/mi
24M
2:36:40
Rank: #2055 (-206)
23M → 24M
7:39 | 7:39/mi
40K· 24.85 mi
2:43:15
Rank: #2215 (-160)
24M → 40K
6:35 | 7:42/mi
25.2M
2:46:08
Rank: #2271 (-56)
40K → 25.2M
2:53 | 8:22/mi
Finish· 26.22 mi
2:53:45
Rank: #2418 (-147)
25.2M → Finish
7:37 | 7:28/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:20:13
Pace6:07 /mi
2nd Half
Distance13.11 mi
Time1:33:32
Pace7:08 /mi
📊Positive Split: 16.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:18:5118:446:0218:44
6:02
-
10K
6.21 mi10:37:4137:346:0318:50
6:04
+0:02
15K
9.32 mi10:56:4356:366:0419:02
6:08
+0:04
20K
12.43 mi11:16:081:16:016:0719:25
6:15
+0:07
Half
13.11 mi11:20:201:20:136:074:12
6:09
-0:06
25K
15.53 mi11:35:431:35:366:0915:23
6:21
+0:12
30K
18.64 mi11:56:191:56:126:1420:36
6:38
+0:17
20M
20.00 mi12:05:582:05:516:189:39
7:06
+0:28
21M
21.00 mi12:14:062:13:596:238:08
8:08
+1:02
35K
21.75 mi12:19:252:19:186:245:19
7:06
-1:02
23M
23.00 mi12:29:082:29:016:299:43
7:46
+0:40
24M
24.00 mi12:36:472:36:406:327:39
7:39
-0:07
40K
24.85 mi12:43:222:43:156:346:35
7:42
+0:03
25.2M
25.20 mi12:46:152:46:086:362:53
8:22
+0:40
Finish
26.22 mi12:53:522:53:456:387:37
7:28
-0:54

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

6:02 /mi

Average Pace

6:38 /mi

Slowest Pace

8:22 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:56:12

67% of race

Time at Steady Pace

22:35

13% of race

Time at Slower Pace

34:58

20% of race

Average Pace: 6:38 /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 mi10:18:5118:446:0218:44
6:02
#742
10K
6.21 mi10:37:4137:346:0318:50
6:04
#825
15K
9.32 mi10:56:4356:366:0419:02
6:08
#874
20K
12.43 mi11:16:081:16:016:0719:25
6:15
#956
Half
13.11 mi11:20:201:20:136:074:12
6:09
#966
25K
15.53 mi11:35:431:35:366:0915:23
6:21
#1004
30K
18.64 mi11:56:191:56:126:1420:36
6:38
#1126
20M
20.00 mi12:05:582:05:516:189:39
7:06
#1264
21M
21.00 mi12:14:062:13:596:238:08
8:08
#1496
35K
21.75 mi12:19:252:19:186:245:19
7:06
#1596
23M
23.00 mi12:29:082:29:016:299:43
7:46
#1849
24M
24.00 mi12:36:472:36:406:327:39
7:39
#2055
40K
24.85 mi12:43:222:43:156:346:35
7:42
#2215
25.2M
25.20 mi12:46:152:46:086:362:53
8:22
#2271
Finish
26.22 mi12:53:522:53:456:387:37
7:28
#2418
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi7426946941038(Top 4%)987(Top 7%)987(Top 19%)
10K6.21 mi3.10 mi825-83778-84778-84974(Top 4%)924(Top 6%)924(Top 17%)
15K9.32 mi3.11 mi874-49825-47825-471038(Top 4%)987(Top 7%)987(Top 19%)
20K12.43 mi3.11 mi956-82907-82907-821221(Top 5%)1168(Top 8%)1168(Top 22%)
Half13.11 mi0.68 mi966-10916-9916-91226(Top 5%)1175(Top 8%)1175(Top 22%)
25K15.53 mi2.42 mi1004-38954-38954-381513(Top 6%)1449(Top 10%)1449(Top 27%)
30K18.64 mi3.11 mi1126-1221074-1201074-1202102(Top 8%)2009(Top 13%)2009(Top 38%)
20M20.00 mi1.36 mi1264-1381207-1331207-1334593(Top 17%)4212(Top 28%)4212(Top 80%)
21M21.00 mi1.00 mi1496-2321429-2221429-2228160(Top 31%)6558(Top 43%)6558(Top 124%)
35K21.75 mi0.75 mi1596-1001526-971526-975883(Top 22%)5136(Top 34%)5136(Top 97%)
23M23.00 mi1.25 mi1849-2531769-2431769-2438105(Top 30%)6453(Top 43%)6453(Top 122%)
24M24.00 mi1.00 mi2055-2061971-2021971-2028690(Top 33%)6708(Top 44%)6708(Top 127%)
40K24.85 mi0.85 mi2215-1602126-1552126-1557904(Top 30%)6167(Top 41%)6167(Top 117%)
25.2M25.20 mi0.35 mi2271-562175-492175-498543(Top 32%)6444(Top 42%)6444(Top 122%)
Finish26.22 mi1.02 mi2418-1472309-1342309-1348307(Top 31%)6323(Top 42%)6323(Top 120%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 4%
×21stories
+97ft-345ft

Overall

1038

Males

987

M18-39

987

5K→10K

3.1 - 6.2 mi

Top 4%
×5stories
+79ft-138ft

Overall

974

Males

924

M18-39

924

10K→15K

6.2 - 9.3 mi

Top 4%
×3stories
+67ft-78ft

Overall

1038

Males

987

M18-39

987

15K→20K

9.3 - 12.4 mi

Top 5%
×5stories
+106ft-86ft

Overall

1221

Males

1168

M18-39

1168

20K→Half

12.4 - 13.1 mi

Top 5%
×2stories
+19ft-37ft

Overall

1226

Males

1175

M18-39

1175

Half→25K

13.1 - 15.5 mi

Top 6%
×4stories
+66ft-88ft

Overall

1513

Males

1449

M18-39

1449

25K→30K

15.5 - 18.6 mi

Top 8%
×9stories
+181ft-148ft

Overall

2102

Males

2009

M18-39

2009

30K→20M

18.6 - 20.0 mi

Top 17%
×5stories
+64ft-50ft

Overall

4593

Males

4212

M18-39

4212

20M→21M

20.0 - 21.0 mi

Top 31%
×8stories
+106ft-24ft

Overall

8160

Males

6558

M18-39

6558

21M→35K

21.0 - 21.8 mi

Top 22%
×7stories
+17ft-86ft

Overall

5883

Males

5136

M18-39

5136

35K→23M

21.8 - 23.0 mi

Top 30%
×5stories
+23ft-63ft

Overall

8105

Males

6453

M18-39

6453

23M→24M

23.0 - 24.0 mi

Top 33%
×6stories
+12ft-82ft

Overall

8690

Males

6708

M18-39

6708

24M→40K

24.0 - 24.9 mi

Top 30%
×1story
+6ft-20ft

Overall

7904

Males

6167

M18-39

6167

40K→25.2M

24.9 - 25.2 mi

Top 32%
×1story
+13ft-16ft

Overall

8543

Males

6444

M18-39

6444

25.2M→Finish

25.2 - 26.2 mi

Top 31%
×2stories
+22ft-21ft

Overall

8307

Males

6323

M18-39

6323

Passing Analysis

Category:
Athletes Passed
73
Passed By
1749
Net Change
-1676
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#742
5K → 10K1093-83#742#825
10K → 15K1059-49#825#874
15K → 20K1193-82#874#956
20K → Half010-10#956#966
Half → 25K1351-38#966#1004
25K → 30K12134-122#1004#1126
30K → 20M2140-138#1126#1264
20M → 21M3235-232#1264#1496
21M → 35K1101-100#1496#1596
35K → 23M3256-253#1596#1849
23M → 24M1207-206#1849#2055
24M → 40K4164-160#2055#2215
40K → 25.2M056-56#2215#2271
25.2M → Finish3150-147#2271#2418
TOTALS731749-1676
📊

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