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BOSTON MARATHON 2023

Courtney Blackwell

Bib: 12576•F

IL

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 30%
Gender (Female)
#0 / 11423
Top 11%
Division (F18-39)
#0 / 4884
Top 21%
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
7:18/mi
22:42
↑ 97↓ 3451.5%
10K· 6.21 mi
7:21/mi
45:33
↑ 79↓ 1380.4%
15K· 9.32 mi
7:28/mi
1:08:44
↑ 67↓ 78
20K· 12.43 mi
7:26/mi
1:31:50
↑ 106↓ 860.1%
Half· 13.11 mi
7:17/mi
1:36:48
↑ 19↓ 370.5%
25K· 15.53 mi
7:35/mi
1:55:10
↑ 66↓ 880.2%
30K· 18.64 mi
7:39/mi
2:18:55
↑ 181↓ 1480.2%
20M
7:36/mi
2:29:14
↑ 64↓ 500.2%
21M
8:09/mi
2:37:23
↑ 106↓ 241.6%
35K· 21.75 mi
7:10/mi
2:42:45
↑ 17↓ 861.7%
23M
7:35/mi
2:52:15
↑ 23↓ 630.6%
24M
7:21/mi
2:59:36
↓ 821.3%
40K· 24.85 mi
7:29/mi
3:06:00
↓ 200.3%
25.2M
8:01/mi
3:08:46
↑ 13↓ 160.2%
Finish· 26.22 mi
7:18/mi
3:16:12
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:36:48
Pace7:23 /mi
2nd Half
Distance13.11 mi
Time1:39:24
Pace7:35 /mi
📊Positive Split: 2.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:2322:427:1822:42
7:18
-
10K
6.21 mi11:13:1445:337:2022:51
7:21
+0:03
15K
9.32 mi11:36:251:08:447:2223:11
7:28
+0:07
20K
12.43 mi11:59:311:31:507:2323:06
7:26
-0:02
Half
13.11 mi12:04:291:36:487:234:58
7:17
-0:09
25K
15.53 mi12:22:511:55:107:2518:22
7:35
+0:18
30K
18.64 mi12:46:362:18:557:2723:45
7:39
+0:04
20M
20.00 mi12:56:552:29:147:2810:19
7:36
-0:03
21M
21.00 mi13:05:042:37:237:308:09
8:09
+0:33
35K
21.75 mi13:10:262:42:457:295:22
7:10
-0:59
23M
23.00 mi13:19:562:52:157:299:30
7:35
+0:25
24M
24.00 mi13:27:172:59:367:297:21
7:21
-0:14
40K
24.85 mi13:33:413:06:007:296:24
7:29
+0:08
25.2M
25.20 mi13:36:273:08:467:292:46
8:01
+0:32
Finish
26.22 mi13:43:533:16:127:297:26
7:18
-0:43

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

7:10 /mi

Average Pace

7:29 /mi

Slowest Pace

8:09 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:05:17

94% of race

Time at Steady Pace

10:55

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:29 /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 mi10:50:2322:427:1822:42
7:18
#8150
10K
6.21 mi11:13:1445:337:2022:51
7:21
#8660
15K
9.32 mi11:36:251:08:447:2223:11
7:28
#9009
20K
12.43 mi11:59:311:31:507:2323:06
7:26
#8920
Half
13.11 mi12:04:291:36:487:234:58
7:17
#8887
25K
15.53 mi12:22:511:55:107:2518:22
7:35
#8930
30K
18.64 mi12:46:362:18:557:2723:45
7:39
#8772
20M
20.00 mi12:56:552:29:147:2810:19
7:36
#8648
21M
21.00 mi13:05:042:37:237:308:09
8:09
#8595
35K
21.75 mi13:10:262:42:457:295:22
7:10
#8510
23M
23.00 mi13:19:562:52:157:299:30
7:35
#8384
24M
24.00 mi13:27:172:59:367:297:21
7:21
#8282
40K
24.85 mi13:33:413:06:007:296:24
7:29
#8189
25.2M
25.20 mi13:36:273:08:467:292:46
8:01
#8151
Finish
26.22 mi13:43:533:16:127:297:26
7:18
#8083
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi8150106610669881(Top 37%)1786(Top 16%)1786(Top 37%)
10K6.21 mi3.10 mi8660-5101276-2101276-2109275(Top 35%)1530(Top 13%)1530(Top 31%)
15K9.32 mi3.11 mi9009-3491424-1481424-1489881(Top 37%)1786(Top 16%)1786(Top 37%)
20K12.43 mi3.11 mi8920+891406+181406+188804(Top 33%)1410(Top 12%)1410(Top 29%)
Half13.11 mi0.68 mi8887+331393+131393+138503(Top 32%)1282(Top 11%)1282(Top 26%)
25K15.53 mi2.42 mi8930-431422-291422-299355(Top 35%)1704(Top 15%)1704(Top 35%)
30K18.64 mi3.11 mi8772+1581394+281394+288269(Top 31%)1412(Top 12%)1412(Top 29%)
20M20.00 mi1.36 mi8648+1241370+241370+247459(Top 28%)1198(Top 10%)1198(Top 25%)
21M21.00 mi1.00 mi8595+531371-11371-18320(Top 31%)1646(Top 14%)1646(Top 34%)
35K21.75 mi0.75 mi8510+851356+151356+156420(Top 24%)899(Top 8%)899(Top 18%)
23M23.00 mi1.25 mi8384+1261324+321324+327022(Top 26%)1183(Top 10%)1183(Top 24%)
24M24.00 mi1.00 mi8282+1021313+111313+116752(Top 25%)1174(Top 10%)1174(Top 24%)
40K24.85 mi0.85 mi8189+931296+171296+176668(Top 25%)1234(Top 11%)1234(Top 25%)
25.2M25.20 mi0.35 mi8151+381290+61290+66723(Top 25%)1309(Top 11%)1309(Top 27%)
Finish26.22 mi1.02 mi8083+681285+51285+57120(Top 27%)1467(Top 13%)1467(Top 30%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 37%
×21story building
+97ft-345ft

Overall

9881

Females

1786

F18-39

1786

5K→10K

3.1 - 6.2 mi

Top 35%
×5story building
+79ft-138ft

Overall

9275

Females

1530

F18-39

1530

10K→15K

6.2 - 9.3 mi

Top 37%
×3story building
+67ft-78ft

Overall

9881

Females

1786

F18-39

1786

15K→20K

9.3 - 12.4 mi

Top 33%
×5story building
+106ft-86ft

Overall

8804

Females

1410

F18-39

1410

20K→Half

12.4 - 13.1 mi

Top 32%
×2story building
+19ft-37ft

Overall

8503

Females

1282

F18-39

1282

Half→25K

13.1 - 15.5 mi

Top 35%
×4story building
+66ft-88ft

Overall

9355

Females

1704

F18-39

1704

25K→30K

15.5 - 18.6 mi

Top 31%
×9story building
+181ft-148ft

Overall

8269

Females

1412

F18-39

1412

30K→20M

18.6 - 20.0 mi

Top 28%
×5story building
+64ft-50ft

Overall

7459

Females

1198

F18-39

1198

20M→21M

20.0 - 21.0 mi

Top 31%
×8story building
+106ft-24ft

Overall

8320

Females

1646

F18-39

1646

21M→35K

21.0 - 21.8 mi

Top 24%
×7story building
+17ft-86ft

Overall

6420

Females

899

F18-39

899

35K→23M

21.8 - 23.0 mi

Top 26%
×5story building
+23ft-63ft

Overall

7022

Females

1183

F18-39

1183

23M→24M

23.0 - 24.0 mi

Top 25%
×6story building
+12ft-82ft

Overall

6752

Females

1174

F18-39

1174

24M→40K

24.0 - 24.9 mi

Top 25%
×1story
+6ft-20ft

Overall

6668

Females

1234

F18-39

1234

40K→25.2M

24.9 - 25.2 mi

Top 25%
×1story
+13ft-16ft

Overall

6723

Females

1309

F18-39

1309

25.2M→Finish

25.2 - 26.2 mi

Top 27%
×2story building
+22ft-21ft

Overall

7120

Females

1467

F18-39

1467

Passing Analysis

Category:
Athletes Passed
1532
Passed By
1465
Net Change
+67
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8150
5K → 10K74584-510#8150#8660
10K → 15K57406-349#8660#9009
15K → 20K17485+89#9009#8920
20K → Half418+33#8920#8887
Half → 25K87130-43#8887#8930
25K → 30K24890+158#8930#8772
30K → 20M14420+124#8772#8648
20M → 21M9845+53#8648#8595
21M → 35K916+85#8595#8510
35K → 23M14317+126#8510#8384
23M → 24M12422+102#8384#8282
24M → 40K10815+93#8282#8189
40K → 25.2M479+38#8189#8151
25.2M → Finish9628+68#8151#8083
TOTALS15321465+67
📊

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