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BOSTON MARATHON 2023

Andrew Giljahn

Bib: 522•M

OH

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 2%
Gender (Male)
#0 / 15176
Top 3%
Division (M18-39)
#0 / 5285
Top 8%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:03
Rank: #963
Start → 5K
19:03 | 6:08/mi
10K· 6.21 mi
37:51
Rank: #945 (+18)
5K → 10K
18:48 | 6:03/mi
15K· 9.32 mi
56:31
Rank: #861 (+84)
10K → 15K
18:40 | 6:00/mi
20K· 12.43 mi
1:15:05
Rank: #753 (+108)
15K → 20K
18:34 | 5:59/mi
Half· 13.11 mi
1:19:08
Rank: #742 (+11)
20K → Half
4:03 | 5:56/mi
25K· 15.53 mi
1:33:38
Rank: #700 (+42)
Half → 25K
14:30 | 5:59/mi
30K· 18.64 mi
1:52:42
Rank: #664 (+36)
25K → 30K
19:04 | 6:08/mi
20M
2:01:05
Rank: #651 (+13)
30K → 20M
8:23 | 6:10/mi
21M
2:07:22
Rank: #623 (+28)
20M → 21M
6:17 | 6:17/mi
35K· 21.75 mi
2:11:42
Rank: #607 (+16)
21M → 35K
4:20 | 5:48/mi
23M
2:19:08
Rank: #568 (+39)
35K → 23M
7:26 | 5:56/mi
24M
2:24:58
Rank: #547 (+21)
23M → 24M
5:50 | 5:50/mi
40K· 24.85 mi
2:30:02
Rank: #528 (+19)
24M → 40K
5:04 | 5:56/mi
25.2M
2:32:15
Rank: #525 (+3)
40K → 25.2M
2:13 | 6:26/mi
Finish· 26.22 mi
2:37:58
Rank: #488 (+37)
25.2M → Finish
5:43 | 5:37/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:19:08
Pace6:02 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:18:50
Pace6:01 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:19:1719:036:0819:03
6:08
-
10K
6.21 mi10:38:0537:516:0518:48
6:03
-0:05
15K
9.32 mi10:56:4556:316:0418:40
6:00
-0:03
20K
12.43 mi11:15:191:15:056:0318:34
5:59
-0:01
Half
13.11 mi11:19:221:19:086:024:03
5:56
-0:03
25K
15.53 mi11:33:521:33:386:0214:30
5:59
+0:03
30K
18.64 mi11:52:561:52:426:0319:04
6:08
+0:09
20M
20.00 mi12:01:192:01:056:038:23
6:10
+0:02
21M
21.00 mi12:07:362:07:226:046:17
6:17
+0:07
35K
21.75 mi12:11:562:11:426:034:20
5:48
-0:29
23M
23.00 mi12:19:222:19:086:037:26
5:56
+0:08
24M
24.00 mi12:25:122:24:586:025:50
5:50
-0:06
40K
24.85 mi12:30:162:30:026:025:04
5:56
+0:06
25.2M
25.20 mi12:32:292:32:156:032:13
6:26
+0:30
Finish
26.22 mi12:38:122:37:586:025:43
5:37
-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

5:37 /mi

Average Pace

6:02 /mi

Slowest Pace

6:26 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:29:28

95% of race

Time at Steady Pace

8:30

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:01 /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 mi10:19:1719:036:0819:03
6:08
#963
10K
6.21 mi10:38:0537:516:0518:48
6:03
#945
15K
9.32 mi10:56:4556:316:0418:40
6:00
#861
20K
12.43 mi11:15:191:15:056:0318:34
5:59
#753
Half
13.11 mi11:19:221:19:086:024:03
5:56
#742
25K
15.53 mi11:33:521:33:386:0214:30
5:59
#700
30K
18.64 mi11:52:561:52:426:0319:04
6:08
#664
20M
20.00 mi12:01:192:01:056:038:23
6:10
#651
21M
21.00 mi12:07:362:07:226:046:17
6:17
#623
35K
21.75 mi12:11:562:11:426:034:20
5:48
#607
23M
23.00 mi12:19:222:19:086:037:26
5:56
#568
24M
24.00 mi12:25:122:24:586:025:50
5:50
#547
40K
24.85 mi12:30:162:30:026:025:04
5:56
#528
25.2M
25.20 mi12:32:292:32:156:032:13
6:26
#525
Finish
26.22 mi12:38:122:37:586:025:43
5:37
#488
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi963907907727(Top 3%)684(Top 5%)684(Top 13%)
10K6.21 mi3.10 mi945+18892+15892+15926(Top 3%)877(Top 6%)877(Top 17%)
15K9.32 mi3.11 mi861+84813+79813+79727(Top 3%)684(Top 5%)684(Top 13%)
20K12.43 mi3.11 mi753+108709+104709+104525(Top 2%)485(Top 3%)485(Top 9%)
Half13.11 mi0.68 mi742+11699+10699+10606(Top 2%)568(Top 4%)568(Top 11%)
25K15.53 mi2.42 mi700+42658+41658+41525(Top 2%)488(Top 3%)488(Top 9%)
30K18.64 mi3.11 mi664+36623+35623+35560(Top 2%)525(Top 3%)525(Top 10%)
20M20.00 mi1.36 mi651+13610+13610+13591(Top 2%)556(Top 4%)556(Top 11%)
21M21.00 mi1.00 mi623+28582+28582+28333(Top 1%)306(Top 2%)306(Top 6%)
35K21.75 mi0.75 mi607+16567+15567+15362(Top 1%)333(Top 2%)333(Top 6%)
23M23.00 mi1.25 mi568+39529+38529+38252(Top 0.9%)228(Top 2%)228(Top 4%)
24M24.00 mi1.00 mi547+21509+20509+20300(Top 1%)274(Top 2%)274(Top 5%)
40K24.85 mi0.85 mi528+19491+18491+18257(Top 1.0%)234(Top 2%)234(Top 4%)
25.2M25.20 mi0.35 mi525+3488+3488+3388(Top 1%)366(Top 2%)366(Top 7%)
Finish26.22 mi1.02 mi488+37453+35453+35162(Top 0.6%)147(Top 1.0%)147(Top 3%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 3%
×21stories
+97ft-345ft

Overall

727

Males

684

M18-39

684

5K→10K

3.1 - 6.2 mi

Top 3%
×5stories
+79ft-138ft

Overall

926

Males

877

M18-39

877

10K→15K

6.2 - 9.3 mi

Top 3%
×3stories
+67ft-78ft

Overall

727

Males

684

M18-39

684

15K→20K

9.3 - 12.4 mi

Top 2%
×5stories
+106ft-86ft

Overall

525

Males

485

M18-39

485

20K→Half

12.4 - 13.1 mi

Top 2%
×2stories
+19ft-37ft

Overall

606

Males

568

M18-39

568

Half→25K

13.1 - 15.5 mi

Top 2%
×4stories
+66ft-88ft

Overall

525

Males

488

M18-39

488

25K→30K

15.5 - 18.6 mi

Top 2%
×9stories
+181ft-148ft

Overall

560

Males

525

M18-39

525

30K→20M

18.6 - 20.0 mi

Top 2%
×5stories
+64ft-50ft

Overall

591

Males

556

M18-39

556

20M→21M

20.0 - 21.0 mi

Top 1%
×8stories
+106ft-24ft

Overall

333

Males

306

M18-39

306

21M→35K

21.0 - 21.8 mi

Top 1%
×7stories
+17ft-86ft

Overall

362

Males

333

M18-39

333

35K→23M

21.8 - 23.0 mi

Top 0.9%
×5stories
+23ft-63ft

Overall

252

Males

228

M18-39

228

23M→24M

23.0 - 24.0 mi

Top 1%
×6stories
+12ft-82ft

Overall

300

Males

274

M18-39

274

24M→40K

24.0 - 24.9 mi

Top 1.0%
×1story
+6ft-20ft

Overall

257

Males

234

M18-39

234

40K→25.2M

24.9 - 25.2 mi

Top 1%
×1story
+13ft-16ft

Overall

388

Males

366

M18-39

366

25.2M→Finish

25.2 - 26.2 mi

Top 0.6%
×2stories
+22ft-21ft

Overall

162

Males

147

M18-39

147

Passing Analysis

Category:
Athletes Passed
538
Passed By
63
Net Change
+475
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#963
5K → 10K5739+18#963#945
10K → 15K851+84#945#861
15K → 20K1080+108#861#753
20K → Half121+11#753#742
Half → 25K431+42#742#700
25K → 30K4610+36#700#664
30K → 20M185+13#664#651
20M → 21M291+28#651#623
21M → 35K160+16#623#607
35K → 23M390+39#607#568
23M → 24M232+21#568#547
24M → 40K212+19#547#528
40K → 25.2M41+3#528#525
25.2M → Finish370+37#525#488
TOTALS53863+475
📊

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