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BOSTON MARATHON 2023

Catherine Holly

Bib: 18438•F

NH

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

Start
0:00:00
Race begins
5K· 3.11 mi
30:27
Rank: #22924
Start → 5K
9:48/mi
30:27 split
10K· 6.21 mi
58:43
Rank: #22199 (+725)
5K → 10K
9:06/mi
28:16 split
15K· 9.32 mi
1:26:41
Rank: #21688 (+511)
10K → 15K
9:00/mi
27:58 split
20K· 12.43 mi
1:54:36
Rank: #21254 (+434)
15K → 20K
8:59/mi
27:55 split
Half· 13.11 mi
2:00:44
Rank: #21213 (+41)
20K → Half
8:59/mi
6:08 split
25K· 15.53 mi
2:23:24
Rank: #21057 (+156)
Half → 25K
9:21/mi
22:40 split
30K· 18.64 mi
2:53:31
Rank: #20855 (+202)
25K → 30K
9:42/mi
30:07 split
20M
3:07:04
Rank: #20804 (+51)
30K → 20M
9:58/mi
13:33 split
21M
3:17:32
Rank: #20710 (+94)
20M → 21M
10:28/mi
10:28 split
35K· 21.75 mi
3:24:44
Rank: #20677 (+33)
21M → 35K
9:37/mi
7:12 split
23M
3:37:21
Rank: #20627 (+50)
35K → 23M
10:05/mi
12:37 split
24M
3:47:14
Rank: #20626 (+1)
23M → 24M
9:53/mi
9:53 split
40K· 24.85 mi
3:55:52
Rank: #20605 (+21)
24M → 40K
10:06/mi
8:38 split
25.2M
3:59:24
Rank: #20566 (+39)
40K → 25.2M
10:15/mi
3:32 split
Finish· 26.22 mi
4:08:44
Rank: #20491 (+75)
25.2M → Finish
9:10/mi
9:20 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:00:44
Pace9:13 /mi
2nd Half
Distance13.11 mi
Time2:08:00
Pace9:46 /mi
📊Positive Split: 6.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:49:5030:279:4830:27
9:48
-
10K
6.21 mi12:18:0658:439:2728:16
9:06
-0:42
15K
9.32 mi12:46:041:26:419:1827:58
9:00
-0:06
20K
12.43 mi13:13:591:54:369:1327:55
8:59
-0:01
Half
13.11 mi13:20:072:00:449:136:08
8:59
0:00
25K
15.53 mi13:42:472:23:249:1422:40
9:21
+0:22
30K
18.64 mi14:12:542:53:319:1830:07
9:42
+0:21
20M
20.00 mi14:26:273:07:049:2113:33
9:58
+0:16
21M
21.00 mi14:36:553:17:329:2410:28
10:28
+0:30
35K
21.75 mi14:44:073:24:449:257:12
9:37
-0:51
23M
23.00 mi14:56:443:37:219:2712:37
10:05
+0:28
24M
24.00 mi15:06:373:47:149:289:53
9:53
-0:12
40K
24.85 mi15:15:153:55:529:298:38
10:06
+0:13
25.2M
25.20 mi15:18:473:59:249:303:32
10:15
+0:09
Finish
26.22 mi15:28:074:08:449:309:20
9:10
-1:05

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

8:59 /mi

Average Pace

9:30 /mi

Slowest Pace

10:28 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:10:03

76% of race

Time at Steady Pace

58:41

24% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 9:29 /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 mi11:49:5030:279:4830:27
9:48
#22924
10K
6.21 mi12:18:0658:439:2728:16
9:06
#22199
15K
9.32 mi12:46:041:26:419:1827:58
9:00
#21688
20K
12.43 mi13:13:591:54:369:1327:55
8:59
#21254
Half
13.11 mi13:20:072:00:449:136:08
8:59
#21213
25K
15.53 mi13:42:472:23:249:1422:40
9:21
#21057
30K
18.64 mi14:12:542:53:319:1830:07
9:42
#20855
20M
20.00 mi14:26:273:07:049:2113:33
9:58
#20804
21M
21.00 mi14:36:553:17:329:2410:28
10:28
#20710
35K
21.75 mi14:44:073:24:449:257:12
9:37
#20677
23M
23.00 mi14:56:443:37:219:2712:37
10:05
#20627
24M
24.00 mi15:06:373:47:149:289:53
9:53
#20626
40K
24.85 mi15:15:153:55:529:298:38
10:06
#20605
25.2M
25.20 mi15:18:473:59:249:303:32
10:15
#20566
Finish
26.22 mi15:28:074:08:449:309:20
9:10
#20491
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi229249343934320522(Top 77%)7970(Top 70%)7970(Top 163%)
10K6.21 mi3.10 mi22199+7258952+3918952+39121262(Top 80%)8421(Top 74%)8421(Top 172%)
15K9.32 mi3.11 mi21688+5118670+2828670+28220522(Top 77%)7970(Top 70%)7970(Top 163%)
20K12.43 mi3.11 mi21254+4348408+2628408+26219637(Top 74%)7462(Top 65%)7462(Top 153%)
Half13.11 mi0.68 mi21213+418382+268382+2620435(Top 77%)7933(Top 69%)7933(Top 162%)
25K15.53 mi2.42 mi21057+1568295+878295+8720359(Top 76%)7908(Top 69%)7908(Top 162%)
30K18.64 mi3.11 mi20855+2028189+1068189+10620127(Top 76%)7843(Top 69%)7843(Top 161%)
20M20.00 mi1.36 mi20804+518179+108179+1020416(Top 77%)8087(Top 71%)8087(Top 166%)
21M21.00 mi1.00 mi20710+948139+408139+4019508(Top 73%)7650(Top 67%)7650(Top 157%)
35K21.75 mi0.75 mi20677+338130+98130+920239(Top 76%)8077(Top 71%)8077(Top 165%)
23M23.00 mi1.25 mi20627+508121+98121+920221(Top 76%)8091(Top 71%)8091(Top 166%)
24M24.00 mi1.00 mi20626+18140-198140-1920472(Top 77%)8246(Top 72%)8246(Top 169%)
40K24.85 mi0.85 mi20605+218135+58135+520241(Top 76%)8185(Top 72%)8185(Top 168%)
25.2M25.20 mi0.35 mi20566+398115+208115+2018355(Top 69%)7164(Top 63%)7164(Top 147%)
Finish26.22 mi1.02 mi20491+758083+328083+3218764(Top 70%)7320(Top 64%)7320(Top 150%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 77%
×21stories
+97ft-345ft

Overall

20522

Females

7970

F18-39

7970

5K→10K

3.1 - 6.2 mi

Top 80%
×5stories
+79ft-138ft

Overall

21262

Females

8421

F18-39

8421

10K→15K

6.2 - 9.3 mi

Top 77%
×3stories
+67ft-78ft

Overall

20522

Females

7970

F18-39

7970

15K→20K

9.3 - 12.4 mi

Top 74%
×5stories
+106ft-86ft

Overall

19637

Females

7462

F18-39

7462

20K→Half

12.4 - 13.1 mi

Top 77%
×2stories
+19ft-37ft

Overall

20435

Females

7933

F18-39

7933

Half→25K

13.1 - 15.5 mi

Top 76%
×4stories
+66ft-88ft

Overall

20359

Females

7908

F18-39

7908

25K→30K

15.5 - 18.6 mi

Top 76%
×9stories
+181ft-148ft

Overall

20127

Females

7843

F18-39

7843

30K→20M

18.6 - 20.0 mi

Top 77%
×5stories
+64ft-50ft

Overall

20416

Females

8087

F18-39

8087

20M→21M

20.0 - 21.0 mi

Top 73%
×8stories
+106ft-24ft

Overall

19508

Females

7650

F18-39

7650

21M→35K

21.0 - 21.8 mi

Top 76%
×7stories
+17ft-86ft

Overall

20239

Females

8077

F18-39

8077

35K→23M

21.8 - 23.0 mi

Top 76%
×5stories
+23ft-63ft

Overall

20221

Females

8091

F18-39

8091

23M→24M

23.0 - 24.0 mi

Top 77%
×6stories
+12ft-82ft

Overall

20472

Females

8246

F18-39

8246

24M→40K

24.0 - 24.9 mi

Top 76%
×1story
+6ft-20ft

Overall

20241

Females

8185

F18-39

8185

40K→25.2M

24.9 - 25.2 mi

Top 69%
×1story
+13ft-16ft

Overall

18355

Females

7164

F18-39

7164

25.2M→Finish

25.2 - 26.2 mi

Top 70%
×2stories
+22ft-21ft

Overall

18764

Females

7320

F18-39

7320

Passing Analysis

Category:
Athletes Passed
2840
Passed By
407
Net Change
+2433
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22924
5K → 10K76035+725#22924#22199
10K → 15K52312+511#22199#21688
15K → 20K45319+434#21688#21254
20K → Half465+41#21254#21213
Half → 25K19135+156#21213#21057
25K → 30K26664+202#21057#20855
30K → 20M10958+51#20855#20804
20M → 21M11723+94#20804#20710
21M → 35K5421+33#20710#20677
35K → 23M8838+50#20677#20627
23M → 24M5049+1#20627#20626
24M → 40K5130+21#20626#20605
40K → 25.2M434+39#20605#20566
25.2M → Finish8914+75#20566#20491
TOTALS2840407+2433
📊

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