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BOSTON MARATHON 2023

Olivia Gizelis

Bib: 26803•F

MA

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Division (F18-39)
#0 / 4884
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
8:40/mi
26:57
↑ 97↓ 3451.5%
10K· 6.21 mi
8:40/mi
53:53
↑ 79↓ 1380.4%
15K· 9.32 mi
8:32/mi
1:20:24
↑ 67↓ 78
20K· 12.43 mi
8:42/mi
1:47:25
↑ 106↓ 860.1%
Half· 13.11 mi
8:37/mi
1:53:18
↑ 19↓ 370.5%
25K· 15.53 mi
8:48/mi
2:14:38
↑ 66↓ 880.2%
30K· 18.64 mi
8:58/mi
2:42:30
↑ 181↓ 1480.2%
20M
8:48/mi
2:54:28
↑ 64↓ 500.2%
21M
9:09/mi
3:03:37
↑ 106↓ 241.6%
35K· 21.75 mi
8:28/mi
3:09:57
↑ 17↓ 861.7%
23M
8:48/mi
3:20:58
↑ 23↓ 630.6%
24M
8:36/mi
3:29:34
↓ 821.3%
40K· 24.85 mi
8:44/mi
3:37:02
↓ 200.3%
25.2M
9:14/mi
3:40:13
↑ 13↓ 160.2%
Finish· 26.22 mi
8:24/mi
3:48:47
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:53:18
Pace8:39 /mi
2nd Half
Distance13.11 mi
Time1:55:29
Pace8:49 /mi
📊Positive Split: 1.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:43:3226:578:4026:57
8:40
-
10K
6.21 mi12:10:2853:538:4026:56
8:40
0:00
15K
9.32 mi12:36:591:20:248:3826:31
8:32
-0:08
20K
12.43 mi13:04:001:47:258:3927:01
8:42
+0:10
Half
13.11 mi13:09:531:53:188:395:53
8:37
-0:05
25K
15.53 mi13:31:132:14:388:4021:20
8:48
+0:11
30K
18.64 mi13:59:052:42:308:4327:52
8:58
+0:10
20M
20.00 mi14:11:032:54:288:4311:58
8:48
-0:10
21M
21.00 mi14:20:123:03:378:459:09
9:09
+0:21
35K
21.75 mi14:26:323:09:578:446:20
8:28
-0:41
23M
23.00 mi14:37:333:20:588:4411:01
8:48
+0:20
24M
24.00 mi14:46:093:29:348:448:36
8:36
-0:12
40K
24.85 mi14:53:373:37:028:447:28
8:44
+0:08
25.2M
25.20 mi14:56:483:40:138:443:11
9:14
+0:30
Finish
26.22 mi15:05:223:48:478:448:34
8:24
-0:50

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

8:24 /mi

Average Pace

8:44 /mi

Slowest Pace

9:14 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:08:35

82% of race

Time at Steady Pace

40:12

18% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:44 /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 mi11:43:3226:578:4026:57
8:40
#18715
10K
6.21 mi12:10:2853:538:4026:56
8:40
#18954
15K
9.32 mi12:36:591:20:248:3826:31
8:32
#18618
20K
12.43 mi13:04:001:47:258:3927:01
8:42
#18480
Half
13.11 mi13:09:531:53:188:395:53
8:37
#18467
25K
15.53 mi13:31:132:14:388:4021:20
8:48
#18383
30K
18.64 mi13:59:052:42:308:4327:52
8:58
#18088
20M
20.00 mi14:11:032:54:288:4311:58
8:48
#17860
21M
21.00 mi14:20:123:03:378:459:09
9:09
#17655
35K
21.75 mi14:26:323:09:578:446:20
8:28
#17550
23M
23.00 mi14:37:333:20:588:4411:01
8:48
#17394
24M
24.00 mi14:46:093:29:348:448:36
8:36
#17289
40K
24.85 mi14:53:373:37:028:447:28
8:44
#17182
25.2M
25.20 mi14:56:483:40:138:443:11
9:14
#17139
Finish
26.22 mi15:05:223:48:478:448:34
8:24
#17046
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi187157011701118047(Top 68%)6527(Top 57%)6527(Top 134%)
10K6.21 mi3.10 mi18954-2397118-1077118-10719244(Top 72%)7226(Top 63%)7226(Top 148%)
15K9.32 mi3.11 mi18618+3366894+2246894+22418047(Top 68%)6527(Top 57%)6527(Top 134%)
20K12.43 mi3.11 mi18480+1386789+1056789+10518099(Top 68%)6563(Top 57%)6563(Top 134%)
Half13.11 mi0.68 mi18467+136785+46785+418479(Top 69%)6756(Top 59%)6756(Top 138%)
25K15.53 mi2.42 mi18383+846755+306755+3017949(Top 67%)6528(Top 57%)6528(Top 134%)
30K18.64 mi3.11 mi18088+2956619+1366619+13617010(Top 64%)6068(Top 53%)6068(Top 124%)
20M20.00 mi1.36 mi17860+2286498+1216498+12115492(Top 58%)5278(Top 46%)5278(Top 108%)
21M21.00 mi1.00 mi17655+2056381+1176381+11714256(Top 54%)4633(Top 41%)4633(Top 95%)
35K21.75 mi0.75 mi17550+1056340+416340+4115171(Top 57%)5222(Top 46%)5222(Top 107%)
23M23.00 mi1.25 mi17394+1566256+846256+8415018(Top 56%)5189(Top 45%)5189(Top 106%)
24M24.00 mi1.00 mi17289+1056197+596197+5915097(Top 57%)5292(Top 46%)5292(Top 108%)
40K24.85 mi0.85 mi17182+1076162+356162+3514756(Top 55%)5169(Top 45%)5169(Top 106%)
25.2M25.20 mi0.35 mi17139+436146+166146+1613929(Top 52%)4740(Top 41%)4740(Top 97%)
Finish26.22 mi1.02 mi17046+936102+446102+4414823(Top 56%)5172(Top 45%)5172(Top 106%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 68%
×21story building
+97ft-345ft

Overall

18047

Females

6527

F18-39

6527

5K→10K

3.1 - 6.2 mi

Top 72%
×5story building
+79ft-138ft

Overall

19244

Females

7226

F18-39

7226

10K→15K

6.2 - 9.3 mi

Top 68%
×3story building
+67ft-78ft

Overall

18047

Females

6527

F18-39

6527

15K→20K

9.3 - 12.4 mi

Top 68%
×5story building
+106ft-86ft

Overall

18099

Females

6563

F18-39

6563

20K→Half

12.4 - 13.1 mi

Top 69%
×2story building
+19ft-37ft

Overall

18479

Females

6756

F18-39

6756

Half→25K

13.1 - 15.5 mi

Top 67%
×4story building
+66ft-88ft

Overall

17949

Females

6528

F18-39

6528

25K→30K

15.5 - 18.6 mi

Top 64%
×9story building
+181ft-148ft

Overall

17010

Females

6068

F18-39

6068

30K→20M

18.6 - 20.0 mi

Top 58%
×5story building
+64ft-50ft

Overall

15492

Females

5278

F18-39

5278

20M→21M

20.0 - 21.0 mi

Top 54%
×8story building
+106ft-24ft

Overall

14256

Females

4633

F18-39

4633

21M→35K

21.0 - 21.8 mi

Top 57%
×7story building
+17ft-86ft

Overall

15171

Females

5222

F18-39

5222

35K→23M

21.8 - 23.0 mi

Top 56%
×5story building
+23ft-63ft

Overall

15018

Females

5189

F18-39

5189

23M→24M

23.0 - 24.0 mi

Top 57%
×6story building
+12ft-82ft

Overall

15097

Females

5292

F18-39

5292

24M→40K

24.0 - 24.9 mi

Top 55%
×1story
+6ft-20ft

Overall

14756

Females

5169

F18-39

5169

40K→25.2M

24.9 - 25.2 mi

Top 52%
×1story
+13ft-16ft

Overall

13929

Females

4740

F18-39

4740

25.2M→Finish

25.2 - 26.2 mi

Top 56%
×2story building
+22ft-21ft

Overall

14823

Females

5172

F18-39

5172

Passing Analysis

Category:
Athletes Passed
2569
Passed By
900
Net Change
+1669
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18715
5K → 10K233472-239#18715#18954
10K → 15K40670+336#18954#18618
15K → 20K22789+138#18618#18480
20K → Half3724+13#18480#18467
Half → 25K17086+84#18467#18383
25K → 30K35358+295#18383#18088
30K → 20M2368+228#18088#17860
20M → 21M2138+205#17860#17655
21M → 35K1149+105#17655#17550
35K → 23M17014+156#17550#17394
23M → 24M12217+105#17394#17289
24M → 40K12417+107#17289#17182
40K → 25.2M474+43#17182#17139
25.2M → Finish11724+93#17139#17046
TOTALS2569900+1669
📊

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