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BOSTON MARATHON 2023

Giff Calibo

Bib: 15491•M

TX

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 41%
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Top 45%
Division (M50-54)
#0 / 2052
Top 47%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
8:07/mi
25:12
↑ 97↓ 3451.5%
10K· 6.21 mi
7:50/mi
49:32
↑ 79↓ 1380.4%
15K· 9.32 mi
7:45/mi
1:13:37
↑ 67↓ 78
20K· 12.43 mi
7:52/mi
1:38:02
↑ 106↓ 860.1%
Half· 13.11 mi
7:43/mi
1:43:18
↑ 19↓ 370.5%
25K· 15.53 mi
7:46/mi
2:02:08
↑ 66↓ 880.2%
30K· 18.64 mi
7:46/mi
2:26:17
↑ 181↓ 1480.2%
20M
7:45/mi
2:36:49
↑ 64↓ 500.2%
21M
8:18/mi
2:45:07
↑ 106↓ 241.6%
35K· 21.75 mi
7:26/mi
2:50:41
↑ 17↓ 861.7%
23M
7:51/mi
3:00:31
↑ 23↓ 630.6%
24M
7:39/mi
3:08:10
↓ 821.3%
40K· 24.85 mi
7:51/mi
3:14:53
↓ 200.3%
25.2M
8:39/mi
3:17:52
↑ 13↓ 160.2%
Finish· 26.22 mi
7:53/mi
3:25:54
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:43:18
Pace7:53 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:42:36
Pace7:50 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:0125:128:0725:12
8:07
-
10K
6.21 mi11:40:2149:327:5824:20
7:50
-0:17
15K
9.32 mi12:04:261:13:377:5424:05
7:45
-0:05
20K
12.43 mi12:28:511:38:027:5324:25
7:52
+0:07
Half
13.11 mi12:34:071:43:187:535:16
7:43
-0:09
25K
15.53 mi12:52:572:02:087:5218:50
7:46
+0:03
30K
18.64 mi13:17:062:26:177:5124:09
7:46
0:00
20M
20.00 mi13:27:382:36:497:5010:32
7:45
-0:01
21M
21.00 mi13:35:562:45:077:528:18
8:18
+0:33
35K
21.75 mi13:41:302:50:417:515:34
7:26
-0:52
23M
23.00 mi13:51:203:00:317:519:50
7:51
+0:25
24M
24.00 mi13:58:593:08:107:507:39
7:39
-0:12
40K
24.85 mi14:05:423:14:537:506:43
7:51
+0:12
25.2M
25.20 mi14:08:413:17:527:512:59
8:39
+0:48
Finish
26.22 mi14:16:433:25:547:528:02
7:53
-0:46

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

7:26 /mi

Average Pace

7:52 /mi

Slowest Pace

8:39 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:14:37

95% of race

Time at Steady Pace

11:17

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:51 /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 mi11:16:0125:128:0725:12
8:07
#14780
10K
6.21 mi11:40:2149:327:5824:20
7:50
#14170
15K
9.32 mi12:04:261:13:377:5424:05
7:45
#13556
20K
12.43 mi12:28:511:38:027:5324:25
7:52
#13208
Half
13.11 mi12:34:071:43:187:535:16
7:43
#13123
25K
15.53 mi12:52:572:02:087:5218:50
7:46
#12697
30K
18.64 mi13:17:062:26:177:5124:09
7:46
#12007
20M
20.00 mi13:27:382:36:497:5010:32
7:45
#11716
21M
21.00 mi13:35:562:45:077:528:18
8:18
#11536
35K
21.75 mi13:41:302:50:417:515:34
7:26
#11369
23M
23.00 mi13:51:203:00:317:519:50
7:51
#11193
24M
24.00 mi13:58:593:08:107:507:39
7:39
#11069
40K
24.85 mi14:05:423:14:537:506:43
7:51
#10969
25.2M
25.20 mi14:08:413:17:527:512:59
8:39
#10940
Finish
26.22 mi14:16:433:25:547:528:02
7:53
#10939
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi14780102511025112292(Top 46%)9201(Top 61%)9201(Top 448%)
10K6.21 mi3.10 mi14170+61010003+24810003+24813386(Top 50%)9717(Top 64%)9717(Top 474%)
15K9.32 mi3.11 mi13556+6149748+2559748+25512292(Top 46%)9201(Top 61%)9201(Top 448%)
20K12.43 mi3.11 mi13208+3489581+1679581+16712224(Top 46%)9106(Top 60%)9106(Top 444%)
Half13.11 mi0.68 mi13123+859548+339548+3311967(Top 45%)9044(Top 60%)9044(Top 441%)
25K15.53 mi2.42 mi12697+4269348+2009348+20010842(Top 41%)8422(Top 55%)8422(Top 410%)
30K18.64 mi3.11 mi12007+6909013+3359013+3359157(Top 34%)7369(Top 49%)7369(Top 359%)
20M20.00 mi1.36 mi11716+2918866+1478866+1478521(Top 32%)6913(Top 46%)6913(Top 337%)
21M21.00 mi1.00 mi11536+1808766+1008766+1009230(Top 35%)7202(Top 47%)7202(Top 351%)
35K21.75 mi0.75 mi11369+1678686+808686+808098(Top 30%)6569(Top 43%)6569(Top 320%)
23M23.00 mi1.25 mi11193+1768576+1108576+1108763(Top 33%)6844(Top 45%)6844(Top 334%)
24M24.00 mi1.00 mi11069+1248493+838493+838750(Top 33%)6768(Top 45%)6768(Top 330%)
40K24.85 mi0.85 mi10969+1008416+778416+779025(Top 34%)6835(Top 45%)6835(Top 333%)
25.2M25.20 mi0.35 mi10940+298384+328384+3210407(Top 39%)7505(Top 49%)7505(Top 366%)
Finish26.22 mi1.02 mi10939+18360+248360+2411263(Top 42%)7920(Top 52%)7920(Top 386%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 46%
×21story building
+97ft-345ft

Overall

12292

Males

9201

M50-54

9201

5K→10K

3.1 - 6.2 mi

Top 50%
×5story building
+79ft-138ft

Overall

13386

Males

9717

M50-54

9717

10K→15K

6.2 - 9.3 mi

Top 46%
×3story building
+67ft-78ft

Overall

12292

Males

9201

M50-54

9201

15K→20K

9.3 - 12.4 mi

Top 46%
×5story building
+106ft-86ft

Overall

12224

Males

9106

M50-54

9106

20K→Half

12.4 - 13.1 mi

Top 45%
×2story building
+19ft-37ft

Overall

11967

Males

9044

M50-54

9044

Half→25K

13.1 - 15.5 mi

Top 41%
×4story building
+66ft-88ft

Overall

10842

Males

8422

M50-54

8422

25K→30K

15.5 - 18.6 mi

Top 34%
×9story building
+181ft-148ft

Overall

9157

Males

7369

M50-54

7369

30K→20M

18.6 - 20.0 mi

Top 32%
×5story building
+64ft-50ft

Overall

8521

Males

6913

M50-54

6913

20M→21M

20.0 - 21.0 mi

Top 35%
×8story building
+106ft-24ft

Overall

9230

Males

7202

M50-54

7202

21M→35K

21.0 - 21.8 mi

Top 30%
×7story building
+17ft-86ft

Overall

8098

Males

6569

M50-54

6569

35K→23M

21.8 - 23.0 mi

Top 33%
×5story building
+23ft-63ft

Overall

8763

Males

6844

M50-54

6844

23M→24M

23.0 - 24.0 mi

Top 33%
×6story building
+12ft-82ft

Overall

8750

Males

6768

M50-54

6768

24M→40K

24.0 - 24.9 mi

Top 34%
×1story
+6ft-20ft

Overall

9025

Males

6835

M50-54

6835

40K→25.2M

24.9 - 25.2 mi

Top 39%
×1story
+13ft-16ft

Overall

10407

Males

7505

M50-54

7505

25.2M→Finish

25.2 - 26.2 mi

Top 42%
×2story building
+22ft-21ft

Overall

11263

Males

7920

M50-54

7920

Passing Analysis

Category:
Athletes Passed
4196
Passed By
355
Net Change
+3841
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14780
5K → 10K70999+610#14780#14170
10K → 15K63824+614#14170#13556
15K → 20K39951+348#13556#13208
20K → Half905+85#13208#13123
Half → 25K4337+426#13123#12697
25K → 30K6966+690#12697#12007
30K → 20M2976+291#12007#11716
20M → 21M19313+180#11716#11536
21M → 35K1703+167#11536#11369
35K → 23M19519+176#11369#11193
23M → 24M14521+124#11193#11069
24M → 40K11919+100#11069#10969
40K → 25.2M5122+29#10969#10940
25.2M → Finish6160+1#10940#10939
TOTALS4196355+3841
📊

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