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BOSTON MARATHON 2023

Gillian Emery

Bib: 15130•F

BC

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 37%
Gender (Female)
#0 / 11423
Top 18%
Masters (Masters Women)
#0 / 6539
Top 8%
Division (F50-54)
#0 / 1207
Top 4%
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
7:40/mi
23:48
↑ 97↓ 3451.5%
10K· 6.21 mi
7:37/mi
47:28
↑ 79↓ 1380.4%
15K· 9.32 mi
7:37/mi
1:11:09
↑ 67↓ 78
20K· 12.43 mi
7:43/mi
1:35:06
↑ 106↓ 860.1%
Half· 13.11 mi
7:42/mi
1:40:21
↑ 19↓ 370.5%
25K· 15.53 mi
7:46/mi
1:59:11
↑ 66↓ 880.2%
30K· 18.64 mi
7:53/mi
2:23:40
↑ 181↓ 1480.2%
20M
7:49/mi
2:34:18
↑ 64↓ 500.2%
21M
8:24/mi
2:42:42
↑ 106↓ 241.6%
35K· 21.75 mi
7:29/mi
2:48:18
↑ 17↓ 861.7%
23M
7:45/mi
2:58:00
↑ 23↓ 630.6%
24M
7:34/mi
3:05:34
↓ 821.3%
40K· 24.85 mi
7:41/mi
3:12:08
↓ 200.3%
25.2M
8:13/mi
3:14:58
↑ 13↓ 160.2%
Finish· 26.22 mi
7:34/mi
3:22:41
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:40:21
Pace7:39 /mi
2nd Half
Distance13.11 mi
Time1:42:20
Pace7:48 /mi
📊Positive Split: 2.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:53:5223:487:4023:48
7:40
-
10K
6.21 mi11:17:3247:287:3823:40
7:37
-0:03
15K
9.32 mi11:41:131:11:097:3823:41
7:37
0:00
20K
12.43 mi12:05:101:35:067:3923:57
7:43
+0:06
Half
13.11 mi12:10:251:40:217:395:15
7:42
-0:01
25K
15.53 mi12:29:151:59:117:4018:50
7:46
+0:04
30K
18.64 mi12:53:442:23:407:4224:29
7:53
+0:07
20M
20.00 mi13:04:222:34:187:4310:38
7:49
-0:04
21M
21.00 mi13:12:462:42:427:458:24
8:24
+0:35
35K
21.75 mi13:18:222:48:187:445:36
7:29
-0:55
23M
23.00 mi13:28:042:58:007:449:42
7:45
+0:16
24M
24.00 mi13:35:383:05:347:447:34
7:34
-0:11
40K
24.85 mi13:42:123:12:087:446:34
7:41
+0:07
25.2M
25.20 mi13:45:023:14:587:442:50
8:13
+0:32
Finish
26.22 mi13:52:453:22:417:447:43
7:34
-0:39

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

7:29 /mi

Average Pace

7:44 /mi

Slowest Pace

8:24 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:14:17

96% of race

Time at Steady Pace

8:24

4% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:44 /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 mi10:53:5223:487:4023:48
7:40
#11117
10K
6.21 mi11:17:3247:287:3823:40
7:37
#11254
15K
9.32 mi11:41:131:11:097:3823:41
7:37
#11231
20K
12.43 mi12:05:101:35:067:3923:57
7:43
#11128
Half
13.11 mi12:10:251:40:217:395:15
7:42
#11159
25K
15.53 mi12:29:151:59:117:4018:50
7:46
#11077
30K
18.64 mi12:53:442:23:407:4224:29
7:53
#10838
20M
20.00 mi13:04:222:34:187:4310:38
7:49
#10686
21M
21.00 mi13:12:462:42:427:458:24
8:24
#10597
35K
21.75 mi13:18:222:48:187:445:36
7:29
#10489
23M
23.00 mi13:28:042:58:007:449:42
7:45
#10318
24M
24.00 mi13:35:383:05:347:447:34
7:34
#10191
40K
24.85 mi13:42:123:12:087:446:34
7:41
#10081
25.2M
25.20 mi13:45:023:14:587:442:50
8:13
#10016
Finish
26.22 mi13:52:453:22:417:447:43
7:34
#9951
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi111172390239011207(Top 42%)2462(Top 22%)2462(Top 204%)
10K6.21 mi3.10 mi11254-1372469-792469-7911491(Top 43%)2593(Top 23%)2593(Top 215%)
15K9.32 mi3.11 mi11231+232453+162453+1611207(Top 42%)2462(Top 22%)2462(Top 204%)
20K12.43 mi3.11 mi11128+1032396+572396+5710996(Top 41%)2400(Top 21%)2400(Top 199%)
Half13.11 mi0.68 mi11159-312421-252421-2511857(Top 45%)2809(Top 25%)2809(Top 233%)
25K15.53 mi2.42 mi11077+822394+272394+2710857(Top 41%)2409(Top 21%)2409(Top 200%)
30K18.64 mi3.11 mi10838+2392317+772317+779988(Top 38%)2155(Top 19%)2155(Top 179%)
20M20.00 mi1.36 mi10686+1522276+412276+419095(Top 34%)1835(Top 16%)1835(Top 152%)
21M21.00 mi1.00 mi10597+892249+272249+279876(Top 37%)2322(Top 20%)2322(Top 192%)
35K21.75 mi0.75 mi10489+1082209+402209+408506(Top 32%)1705(Top 15%)1705(Top 141%)
23M23.00 mi1.25 mi10318+1712156+532156+538090(Top 30%)1634(Top 14%)1634(Top 135%)
24M24.00 mi1.00 mi10191+1272119+372119+378201(Top 31%)1766(Top 15%)1766(Top 146%)
40K24.85 mi0.85 mi10081+1102098+212098+217881(Top 30%)1711(Top 15%)1711(Top 142%)
25.2M25.20 mi0.35 mi10016+652083+152083+157866(Top 30%)1778(Top 16%)1778(Top 147%)
Finish26.22 mi1.02 mi9951+652072+112072+119127(Top 34%)2297(Top 20%)2297(Top 190%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 42%
×21story building
+97ft-345ft

Overall

11207

Females

2462

F50-54

2462

5K→10K

3.1 - 6.2 mi

Top 43%
×5story building
+79ft-138ft

Overall

11491

Females

2593

F50-54

2593

10K→15K

6.2 - 9.3 mi

Top 42%
×3story building
+67ft-78ft

Overall

11207

Females

2462

F50-54

2462

15K→20K

9.3 - 12.4 mi

Top 41%
×5story building
+106ft-86ft

Overall

10996

Females

2400

F50-54

2400

20K→Half

12.4 - 13.1 mi

Top 45%
×2story building
+19ft-37ft

Overall

11857

Females

2809

F50-54

2809

Half→25K

13.1 - 15.5 mi

Top 41%
×4story building
+66ft-88ft

Overall

10857

Females

2409

F50-54

2409

25K→30K

15.5 - 18.6 mi

Top 38%
×9story building
+181ft-148ft

Overall

9988

Females

2155

F50-54

2155

30K→20M

18.6 - 20.0 mi

Top 34%
×5story building
+64ft-50ft

Overall

9095

Females

1835

F50-54

1835

20M→21M

20.0 - 21.0 mi

Top 37%
×8story building
+106ft-24ft

Overall

9876

Females

2322

F50-54

2322

21M→35K

21.0 - 21.8 mi

Top 32%
×7story building
+17ft-86ft

Overall

8506

Females

1705

F50-54

1705

35K→23M

21.8 - 23.0 mi

Top 30%
×5story building
+23ft-63ft

Overall

8090

Females

1634

F50-54

1634

23M→24M

23.0 - 24.0 mi

Top 31%
×6story building
+12ft-82ft

Overall

8201

Females

1766

F50-54

1766

24M→40K

24.0 - 24.9 mi

Top 30%
×1story
+6ft-20ft

Overall

7881

Females

1711

F50-54

1711

40K→25.2M

24.9 - 25.2 mi

Top 30%
×1story
+13ft-16ft

Overall

7866

Females

1778

F50-54

1778

25.2M→Finish

25.2 - 26.2 mi

Top 34%
×2story building
+22ft-21ft

Overall

9127

Females

2297

F50-54

2297

Passing Analysis

Category:
Athletes Passed
2148*
Passed By
982
Net Change
+1166
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11117
5K → 10K229366-137#11117#11254
10K → 15K195172+23#11254#11231
15K → 20K210107+103#11231#11128
20K → Half1546-31#11128#11159
Half → 25K15977+82#11159#11077
25K → 30K30768+239#11077#10838
30K → 20M166*14+152#10838#10686
20M → 21M11829+89#10686#10597
21M → 35K1157+108#10597#10489
35K → 23M18211+171#10489#10318
23M → 24M14114+127#10318#10191
24M → 40K12515+110#10191#10081
40K → 25.2M73*8+65#10081#10016
25.2M → Finish113*48+65#10016#9951
TOTALS2148*982+1166

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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