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BOSTON MARATHON 2023

Jirí Fix

Bib: 10356•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 15%
Gender (Male)
#0 / 15176
Top 24%
Masters (Masters Men)
#0 / 9891
Top 11%
Division (M45-49)
#0 / 2252
Top 13%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:03
Rank: #4413
Start → 5K
6:47/mi
21:03 split
10K· 6.21 mi
41:23
Rank: #3619 (+794)
5K → 10K
6:33/mi
20:20 split
15K· 9.32 mi
1:01:56
Rank: #3513 (+106)
10K → 15K
6:37/mi
20:33 split
20K· 12.43 mi
1:22:32
Rank: #3393 (+120)
15K → 20K
6:38/mi
20:36 split
Half· 13.11 mi
1:26:58
Rank: #3346 (+47)
20K → Half
6:30/mi
4:26 split
25K· 15.53 mi
1:43:08
Rank: #3270 (+76)
Half → 25K
6:40/mi
16:10 split
30K· 18.64 mi
2:04:56
Rank: #3454 (-184)
25K → 30K
7:01/mi
21:48 split
20M
2:14:32
Rank: #3515 (-61)
30K → 20M
7:04/mi
9:36 split
21M
2:22:03
Rank: #3573 (-58)
20M → 21M
7:31/mi
7:31 split
35K· 21.75 mi
2:27:16
Rank: #3639 (-66)
21M → 35K
6:58/mi
5:13 split
23M
2:36:24
Rank: #3757 (-118)
35K → 23M
7:18/mi
9:08 split
24M
2:43:24
Rank: #3808 (-51)
23M → 24M
7:00/mi
7:00 split
40K· 24.85 mi
2:49:33
Rank: #3862 (-54)
24M → 40K
7:12/mi
6:09 split
25.2M
2:52:12
Rank: #3881 (-19)
40K → 25.2M
7:41/mi
2:39 split
Finish· 26.22 mi
2:59:08
Rank: #3897 (-16)
25.2M → Finish
6:48/mi
6:56 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:26:58
Pace6:38 /mi
2nd Half
Distance13.11 mi
Time1:32:10
Pace7:02 /mi
📊Positive Split: 6.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:47:1521:036:4721:03
6:47
-
10K
6.21 mi11:07:3541:236:4020:20
6:33
-0:14
15K
9.32 mi11:28:081:01:566:3920:33
6:37
+0:04
20K
12.43 mi11:48:441:22:326:3820:36
6:38
+0:01
Half
13.11 mi11:53:101:26:586:384:26
6:30
-0:08
25K
15.53 mi12:09:201:43:086:3816:10
6:40
+0:10
30K
18.64 mi12:31:082:04:566:4221:48
7:01
+0:21
20M
20.00 mi12:40:442:14:326:449:36
7:04
+0:03
21M
21.00 mi12:48:152:22:036:467:31
7:31
+0:27
35K
21.75 mi12:53:282:27:166:465:13
6:58
-0:33
23M
23.00 mi13:02:362:36:246:489:08
7:18
+0:20
24M
24.00 mi13:09:362:43:246:497:00
7:00
-0:18
40K
24.85 mi13:15:452:49:336:496:09
7:12
+0:12
25.2M
25.20 mi13:18:242:52:126:502:39
7:41
+0:29
Finish
26.22 mi13:25:202:59:086:506:56
6:48
-0:53

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

6:30 /mi

Average Pace

6:50 /mi

Slowest Pace

7:41 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:33:41

86% of race

Time at Steady Pace

22:48

13% of race

Time at Slower Pace

2:39

1% of race

Average Pace: 6:50 /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 mi10:47:1521:036:4721:03
6:47
#4413
10K
6.21 mi11:07:3541:236:4020:20
6:33
#3619
15K
9.32 mi11:28:081:01:566:3920:33
6:37
#3513
20K
12.43 mi11:48:441:22:326:3820:36
6:38
#3393
Half
13.11 mi11:53:101:26:586:384:26
6:30
#3346
25K
15.53 mi12:09:201:43:086:3816:10
6:40
#3270
30K
18.64 mi12:31:082:04:566:4221:48
7:01
#3454
20M
20.00 mi12:40:442:14:326:449:36
7:04
#3515
21M
21.00 mi12:48:152:22:036:467:31
7:31
#3573
35K
21.75 mi12:53:282:27:166:465:13
6:58
#3639
23M
23.00 mi13:02:362:36:246:489:08
7:18
#3757
24M
24.00 mi13:09:362:43:246:497:00
7:00
#3808
40K
24.85 mi13:15:452:49:336:496:09
7:12
#3862
25.2M
25.20 mi13:18:242:52:126:502:39
7:41
#3881
Finish
26.22 mi13:25:202:59:086:506:56
6:48
#3897
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi4413412141213418(Top 13%)3243(Top 21%)3243(Top 144%)
10K6.21 mi3.10 mi3619+7943414+7073414+7073086(Top 12%)2944(Top 19%)2944(Top 131%)
15K9.32 mi3.11 mi3513+1063325+893325+893418(Top 13%)3243(Top 21%)3243(Top 144%)
20K12.43 mi3.11 mi3393+1203219+1063219+1063057(Top 11%)2912(Top 19%)2912(Top 129%)
Half13.11 mi0.68 mi3346+473180+393180+392827(Top 11%)2711(Top 18%)2711(Top 120%)
25K15.53 mi2.42 mi3270+763114+663114+663137(Top 12%)2992(Top 20%)2992(Top 133%)
30K18.64 mi3.11 mi3454-1843271-1573271-1574446(Top 17%)4123(Top 27%)4123(Top 183%)
20M20.00 mi1.36 mi3515-613325-543325-544392(Top 16%)4041(Top 27%)4041(Top 179%)
21M21.00 mi1.00 mi3573-583381-563381-564636(Top 17%)4202(Top 28%)4202(Top 187%)
35K21.75 mi0.75 mi3639-663437-563437-565142(Top 19%)4593(Top 30%)4593(Top 204%)
23M23.00 mi1.25 mi3757-1183538-1013538-1015257(Top 20%)4644(Top 31%)4644(Top 206%)
24M24.00 mi1.00 mi3808-513578-403578-404656(Top 17%)4170(Top 27%)4170(Top 185%)
40K24.85 mi0.85 mi3862-543624-463624-464817(Top 18%)4217(Top 28%)4217(Top 187%)
25.2M25.20 mi0.35 mi3881-193641-173641-174743(Top 18%)4096(Top 27%)4096(Top 182%)
Finish26.22 mi1.02 mi3897-163655-143655-144080(Top 15%)3601(Top 24%)3601(Top 160%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 13%
×21story building
+97ft-345ft

Overall

3418

Males

3243

M45-49

3243

5K→10K

3.1 - 6.2 mi

Top 12%
×5story building
+79ft-138ft

Overall

3086

Males

2944

M45-49

2944

10K→15K

6.2 - 9.3 mi

Top 13%
×3story building
+67ft-78ft

Overall

3418

Males

3243

M45-49

3243

15K→20K

9.3 - 12.4 mi

Top 11%
×5story building
+106ft-86ft

Overall

3057

Males

2912

M45-49

2912

20K→Half

12.4 - 13.1 mi

Top 11%
×2story building
+19ft-37ft

Overall

2827

Males

2711

M45-49

2711

Half→25K

13.1 - 15.5 mi

Top 12%
×4story building
+66ft-88ft

Overall

3137

Males

2992

M45-49

2992

25K→30K

15.5 - 18.6 mi

Top 17%
×9story building
+181ft-148ft

Overall

4446

Males

4123

M45-49

4123

30K→20M

18.6 - 20.0 mi

Top 16%
×5story building
+64ft-50ft

Overall

4392

Males

4041

M45-49

4041

20M→21M

20.0 - 21.0 mi

Top 17%
×8story building
+106ft-24ft

Overall

4636

Males

4202

M45-49

4202

21M→35K

21.0 - 21.8 mi

Top 19%
×7story building
+17ft-86ft

Overall

5142

Males

4593

M45-49

4593

35K→23M

21.8 - 23.0 mi

Top 20%
×5story building
+23ft-63ft

Overall

5257

Males

4644

M45-49

4644

23M→24M

23.0 - 24.0 mi

Top 17%
×6story building
+12ft-82ft

Overall

4656

Males

4170

M45-49

4170

24M→40K

24.0 - 24.9 mi

Top 18%
×1story
+6ft-20ft

Overall

4817

Males

4217

M45-49

4217

40K→25.2M

24.9 - 25.2 mi

Top 18%
×1story
+13ft-16ft

Overall

4743

Males

4096

M45-49

4096

25.2M→Finish

25.2 - 26.2 mi

Top 15%
×2story building
+22ft-21ft

Overall

4080

Males

3601

M45-49

3601

Passing Analysis

Category:
Athletes Passed
1577
Passed By
1061
Net Change
+516
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4413
5K → 10K82127+794#4413#3619
10K → 15K15953+106#3619#3513
15K → 20K14626+120#3513#3393
20K → Half514+47#3393#3346
Half → 25K10832+76#3346#3270
25K → 30K43227-184#3270#3454
30K → 20M40101-61#3454#3515
20M → 21M3189-58#3515#3573
21M → 35K1682-66#3573#3639
35K → 23M31149-118#3639#3757
23M → 24M3485-51#3757#3808
24M → 40K3791-54#3808#3862
40K → 25.2M2039-19#3862#3881
25.2M → Finish4056-16#3881#3897
TOTALS15771061+516
📊

Passing Visuals

Category:
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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