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BOSTON MARATHON 2023

Christopher Gelnaw

Bib: 25508•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
27:00
Rank: #18807
Start → 5K
27:00 | 8:41/mi
10K· 6.21 mi
54:27
Rank: #19474 (-667)
5K → 10K
27:27 | 8:50/mi
15K· 9.32 mi
1:26:01
Rank: #21461 (-1987)
10K → 15K
31:34 | 10:10/mi
20K· 12.43 mi
1:53:28
Rank: #20914 (+547)
15K → 20K
27:27 | 8:50/mi
Half· 13.11 mi
1:59:30
Rank: #20844 (+70)
20K → Half
6:02 | 8:51/mi
25K· 15.53 mi
2:21:10
Rank: #20501 (+343)
Half → 25K
21:40 | 8:56/mi
30K· 18.64 mi
2:53:26
Rank: #20838 (-337)
25K → 30K
32:16 | 10:23/mi
20M
3:07:21
Rank: #20855 (-17)
30K → 20M
13:55 | 10:14/mi
21M
3:18:25
Rank: #20846 (+9)
20M → 21M
11:04 | 11:04/mi
35K· 21.75 mi
3:25:29
Rank: #20796 (+50)
21M → 35K
7:04 | 9:27/mi
23M
3:38:41
Rank: #20822 (-26)
35K → 23M
13:12 | 10:33/mi
24M
3:49:08
Rank: #20874 (-52)
23M → 24M
10:27 | 10:27/mi
40K· 24.85 mi
3:58:37
Rank: #20944 (-70)
24M → 40K
9:29 | 11:05/mi
25.2M
4:03:14
Rank: #21056 (-112)
40K → 25.2M
4:37 | 13:23/mi
Finish· 26.22 mi
4:13:46
Rank: #21121 (-65)
25.2M → Finish
10:32 | 10:20/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:59:30
Pace9:07 /mi
2nd Half
Distance13.11 mi
Time2:14:16
Pace10:15 /mi
📊Positive Split: 12.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:49:1127:008:4127:00
8:41
-
10K
6.21 mi12:16:3854:278:4627:27
8:50
+0:09
15K
9.32 mi12:48:121:26:019:1431:34
10:10
+1:20
20K
12.43 mi13:15:391:53:289:0827:27
8:50
-1:20
Half
13.11 mi13:21:411:59:309:076:02
8:51
+0:01
25K
15.53 mi13:43:212:21:109:0521:40
8:56
+0:05
30K
18.64 mi14:15:372:53:269:1832:16
10:23
+1:27
20M
20.00 mi14:29:323:07:219:2213:55
10:14
-0:09
21M
21.00 mi14:40:363:18:259:2711:04
11:04
+0:50
35K
21.75 mi14:47:403:25:299:277:04
9:27
-1:37
23M
23.00 mi15:00:523:38:419:3013:12
10:33
+1:06
24M
24.00 mi15:11:193:49:089:3310:27
10:27
-0:06
40K
24.85 mi15:20:483:58:379:369:29
11:05
+0:38
25.2M
25.20 mi15:25:254:03:149:394:37
13:23
+2:18
Finish
26.22 mi15:35:574:13:469:4110:32
10:20
-3:03

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

8:41 /mi

Average Pace

9:41 /mi

Slowest Pace

13:23 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:56:40

46% of race

Time at Steady Pace

1:51:56

44% of race

Time at Slower Pace

25:10

10% of race

Average Pace: 9:41 /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 mi11:49:1127:008:4127:00
8:41
#18807
10K
6.21 mi12:16:3854:278:4627:27
8:50
#19474
15K
9.32 mi12:48:121:26:019:1431:34
10:10
#21461
20K
12.43 mi13:15:391:53:289:0827:27
8:50
#20914
Half
13.11 mi13:21:411:59:309:076:02
8:51
#20844
25K
15.53 mi13:43:212:21:109:0521:40
8:56
#20501
30K
18.64 mi14:15:372:53:269:1832:16
10:23
#20838
20M
20.00 mi14:29:323:07:219:2213:55
10:14
#20855
21M
21.00 mi14:40:363:18:259:2711:04
11:04
#20846
35K
21.75 mi14:47:403:25:299:277:04
9:27
#20796
23M
23.00 mi15:00:523:38:419:3013:12
10:33
#20822
24M
24.00 mi15:11:193:49:089:3310:27
10:27
#20874
40K
24.85 mi15:20:483:58:379:369:29
11:05
#20944
25.2M
25.20 mi15:25:254:03:149:394:37
13:23
#21056
Finish
26.22 mi15:35:574:13:469:4110:32
10:20
#21121
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi18807117081170823799(Top 89%)13996(Top 92%)13996(Top 265%)
10K6.21 mi3.10 mi19474-66712008-30012008-30020103(Top 76%)12328(Top 81%)12328(Top 233%)
15K9.32 mi3.11 mi21461-198712907-89912907-89923799(Top 89%)13996(Top 92%)13996(Top 265%)
20K12.43 mi3.11 mi20914+54712668+23912668+23918853(Top 71%)11835(Top 78%)11835(Top 224%)
Half13.11 mi0.68 mi20844+7012639+2912639+2919716(Top 74%)12201(Top 80%)12201(Top 231%)
25K15.53 mi2.42 mi20501+34312498+14112498+14118642(Top 70%)11696(Top 77%)11696(Top 221%)
30K18.64 mi3.11 mi20838-33712636-13812636-13821959(Top 82%)13053(Top 86%)13053(Top 247%)
20M20.00 mi1.36 mi20855-1712624+1212624+1221120(Top 79%)12618(Top 83%)12618(Top 239%)
21M21.00 mi1.00 mi20846+912602+2212602+2220959(Top 79%)12502(Top 82%)12502(Top 237%)
35K21.75 mi0.75 mi20796+5012567+3512567+3519693(Top 74%)11923(Top 79%)11923(Top 226%)
23M23.00 mi1.25 mi20822-2612569-212569-221419(Top 80%)12650(Top 83%)12650(Top 239%)
24M24.00 mi1.00 mi20874-5212579-1012579-1021907(Top 82%)12829(Top 85%)12829(Top 243%)
40K24.85 mi0.85 mi20944-7012598-1912598-1922526(Top 85%)13094(Top 86%)13094(Top 248%)
25.2M25.20 mi0.35 mi21056-11212640-4212640-4224395(Top 92%)13994(Top 92%)13994(Top 265%)
Finish26.22 mi1.02 mi21121-6512662-2212662-2222635(Top 85%)13147(Top 87%)13147(Top 249%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 89%
×21stories
+97ft-345ft

Overall

23799

Males

13996

M18-39

13996

5K→10K

3.1 - 6.2 mi

Top 76%
×5stories
+79ft-138ft

Overall

20103

Males

12328

M18-39

12328

10K→15K

6.2 - 9.3 mi

Top 89%
×3stories
+67ft-78ft

Overall

23799

Males

13996

M18-39

13996

15K→20K

9.3 - 12.4 mi

Top 71%
×5stories
+106ft-86ft

Overall

18853

Males

11835

M18-39

11835

20K→Half

12.4 - 13.1 mi

Top 74%
×2stories
+19ft-37ft

Overall

19716

Males

12201

M18-39

12201

Half→25K

13.1 - 15.5 mi

Top 70%
×4stories
+66ft-88ft

Overall

18642

Males

11696

M18-39

11696

25K→30K

15.5 - 18.6 mi

Top 82%
×9stories
+181ft-148ft

Overall

21959

Males

13053

M18-39

13053

30K→20M

18.6 - 20.0 mi

Top 79%
×5stories
+64ft-50ft

Overall

21120

Males

12618

M18-39

12618

20M→21M

20.0 - 21.0 mi

Top 79%
×8stories
+106ft-24ft

Overall

20959

Males

12502

M18-39

12502

21M→35K

21.0 - 21.8 mi

Top 74%
×7stories
+17ft-86ft

Overall

19693

Males

11923

M18-39

11923

35K→23M

21.8 - 23.0 mi

Top 80%
×5stories
+23ft-63ft

Overall

21419

Males

12650

M18-39

12650

23M→24M

23.0 - 24.0 mi

Top 82%
×6stories
+12ft-82ft

Overall

21907

Males

12829

M18-39

12829

24M→40K

24.0 - 24.9 mi

Top 85%
×1story
+6ft-20ft

Overall

22526

Males

13094

M18-39

13094

40K→25.2M

24.9 - 25.2 mi

Top 92%
×1story
+13ft-16ft

Overall

24395

Males

13994

M18-39

13994

25.2M→Finish

25.2 - 26.2 mi

Top 85%
×2stories
+22ft-21ft

Overall

22635

Males

13147

M18-39

13147

Passing Analysis

Category:
Athletes Passed
1486
Passed By
3800
Net Change
-2314
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18807
5K → 10K112779-667#18807#19474
10K → 15K41991-1987#19474#21461
15K → 20K5536+547#21461#20914
20K → Half755+70#20914#20844
Half → 25K3485+343#20844#20501
25K → 30K64401-337#20501#20838
30K → 20M7592-17#20838#20855
20M → 21M6253+9#20855#20846
21M → 35K6313+50#20846#20796
35K → 23M5783-26#20796#20822
23M → 24M3486-52#20822#20874
24M → 40K1686-70#20874#20944
40K → 25.2M2114-112#20944#21056
25.2M → Finish2186-65#21056#21121
TOTALS14863800-2314
📊

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