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BOSTON MARATHON 2023

Christy Firestone

Bib: 18125•F

NE

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 47%
Gender (Female)
#0 / 11423
Top 30%
Masters (Masters Women)
#0 / 6539
Top 17%
Division (F40-44)
#0 / 1878
Top 32%
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
8:02/mi
24:57
↑ 97↓ 3451.5%
10K· 6.21 mi
8:08/mi
50:12
↑ 79↓ 1380.4%
15K· 9.32 mi
8:09/mi
1:15:31
↑ 67↓ 78
20K· 12.43 mi
8:08/mi
1:40:48
↑ 106↓ 860.1%
Half· 13.11 mi
7:59/mi
1:46:15
↑ 19↓ 370.5%
25K· 15.53 mi
8:04/mi
2:05:48
↑ 66↓ 880.2%
30K· 18.64 mi
8:17/mi
2:31:32
↑ 181↓ 1480.2%
20M
8:16/mi
2:42:46
↑ 64↓ 500.2%
21M
8:45/mi
2:51:31
↑ 106↓ 241.6%
35K· 21.75 mi
7:30/mi
2:57:08
↑ 17↓ 861.7%
23M
7:50/mi
3:06:57
↑ 23↓ 630.6%
24M
7:27/mi
3:14:24
↓ 821.3%
40K· 24.85 mi
7:33/mi
3:20:51
↓ 200.3%
25.2M
8:13/mi
3:23:41
↑ 13↓ 160.2%
Finish· 26.22 mi
7:26/mi
3:31:15
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:46:15
Pace8:06 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:45:00
Pace8:01 /mi
📊Negative Split: 1.2% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:23:4924:578:0224:57
8:02
-
10K
6.21 mi11:49:0450:128:0525:15
8:08
+0:06
15K
9.32 mi12:14:231:15:318:0625:19
8:09
+0:01
20K
12.43 mi12:39:401:40:488:0725:17
8:08
-0:01
Half
13.11 mi12:45:071:46:158:065:27
7:59
-0:09
25K
15.53 mi13:04:402:05:488:0619:33
8:04
+0:05
30K
18.64 mi13:30:242:31:328:0825:44
8:17
+0:13
20M
20.00 mi13:41:382:42:468:0811:14
8:16
-0:01
21M
21.00 mi13:50:232:51:318:108:45
8:45
+0:29
35K
21.75 mi13:56:002:57:088:095:37
7:30
-1:15
23M
23.00 mi14:05:493:06:578:089:49
7:50
+0:20
24M
24.00 mi14:13:163:14:248:067:27
7:27
-0:23
40K
24.85 mi14:19:433:20:518:056:27
7:33
+0:06
25.2M
25.20 mi14:22:333:23:418:052:50
8:13
+0:40
Finish
26.22 mi14:30:073:31:158:047:34
7:26
-0:47

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

8:04 /mi

Slowest Pace

8:45 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:42:42

77% of race

Time at Steady Pace

48:33

23% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:03 /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 mi11:23:4924:578:0224:57
8:02
#14245
10K
6.21 mi11:49:0450:128:0525:15
8:08
#14964
15K
9.32 mi12:14:231:15:318:0625:19
8:09
#15134
20K
12.43 mi12:39:401:40:488:0725:17
8:08
#14950
Half
13.11 mi12:45:071:46:158:065:27
7:59
#14914
25K
15.53 mi13:04:402:05:488:0619:33
8:04
#14641
30K
18.64 mi13:30:242:31:328:0825:44
8:17
#14322
20M
20.00 mi13:41:382:42:468:0811:14
8:16
#14145
21M
21.00 mi13:50:232:51:318:108:45
8:45
#13970
35K
21.75 mi13:56:002:57:088:095:37
7:30
#13763
23M
23.00 mi14:05:493:06:578:089:49
7:50
#13421
24M
24.00 mi14:13:163:14:248:067:27
7:27
#13121
40K
24.85 mi14:19:433:20:518:056:27
7:33
#12879
25.2M
25.20 mi14:22:333:23:418:052:50
8:13
#12803
Finish
26.22 mi14:30:073:31:158:047:34
7:26
#12613
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi142454173417315489(Top 58%)4970(Top 44%)4970(Top 265%)
10K6.21 mi3.10 mi14964-7194628-4554628-45515721(Top 59%)5088(Top 45%)5088(Top 271%)
15K9.32 mi3.11 mi15134-1704742-1144742-11415489(Top 58%)4970(Top 44%)4970(Top 265%)
20K12.43 mi3.11 mi14950+1844651+914651+9114500(Top 54%)4399(Top 39%)4399(Top 234%)
Half13.11 mi0.68 mi14914+364630+214630+2114288(Top 54%)4232(Top 37%)4232(Top 225%)
25K15.53 mi2.42 mi14641+2734492+1384492+13813259(Top 50%)3780(Top 33%)3780(Top 201%)
30K18.64 mi3.11 mi14322+3194343+1494343+14912925(Top 49%)3709(Top 32%)3709(Top 197%)
20M20.00 mi1.36 mi14145+1774256+874256+8712156(Top 46%)3364(Top 29%)3364(Top 179%)
21M21.00 mi1.00 mi13970+1754165+914165+9111989(Top 45%)3391(Top 30%)3391(Top 181%)
35K21.75 mi0.75 mi13763+2074050+1154050+1158651(Top 32%)1770(Top 15%)1770(Top 94%)
23M23.00 mi1.25 mi13421+3423865+1853865+1858728(Top 33%)1911(Top 17%)1911(Top 102%)
24M24.00 mi1.00 mi13121+3003722+1433722+1437418(Top 28%)1465(Top 13%)1465(Top 78%)
40K24.85 mi0.85 mi12879+2423599+1233599+1237037(Top 26%)1398(Top 12%)1398(Top 74%)
25.2M25.20 mi0.35 mi12803+763558+413558+417901(Top 30%)1813(Top 16%)1813(Top 97%)
Finish26.22 mi1.02 mi12613+1903470+883470+888018(Top 30%)1848(Top 16%)1848(Top 98%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 58%
×21story building
+97ft-345ft

Overall

15489

Females

4970

F40-44

4970

5K→10K

3.1 - 6.2 mi

Top 59%
×5story building
+79ft-138ft

Overall

15721

Females

5088

F40-44

5088

10K→15K

6.2 - 9.3 mi

Top 58%
×3story building
+67ft-78ft

Overall

15489

Females

4970

F40-44

4970

15K→20K

9.3 - 12.4 mi

Top 54%
×5story building
+106ft-86ft

Overall

14500

Females

4399

F40-44

4399

20K→Half

12.4 - 13.1 mi

Top 54%
×2story building
+19ft-37ft

Overall

14288

Females

4232

F40-44

4232

Half→25K

13.1 - 15.5 mi

Top 50%
×4story building
+66ft-88ft

Overall

13259

Females

3780

F40-44

3780

25K→30K

15.5 - 18.6 mi

Top 49%
×9story building
+181ft-148ft

Overall

12925

Females

3709

F40-44

3709

30K→20M

18.6 - 20.0 mi

Top 46%
×5story building
+64ft-50ft

Overall

12156

Females

3364

F40-44

3364

20M→21M

20.0 - 21.0 mi

Top 45%
×8story building
+106ft-24ft

Overall

11989

Females

3391

F40-44

3391

21M→35K

21.0 - 21.8 mi

Top 32%
×7story building
+17ft-86ft

Overall

8651

Females

1770

F40-44

1770

35K→23M

21.8 - 23.0 mi

Top 33%
×5story building
+23ft-63ft

Overall

8728

Females

1911

F40-44

1911

23M→24M

23.0 - 24.0 mi

Top 28%
×6story building
+12ft-82ft

Overall

7418

Females

1465

F40-44

1465

24M→40K

24.0 - 24.9 mi

Top 26%
×1story
+6ft-20ft

Overall

7037

Females

1398

F40-44

1398

40K→25.2M

24.9 - 25.2 mi

Top 30%
×1story
+13ft-16ft

Overall

7901

Females

1813

F40-44

1813

25.2M→Finish

25.2 - 26.2 mi

Top 30%
×2story building
+22ft-21ft

Overall

8018

Females

1848

F40-44

1848

Passing Analysis

Category:
Athletes Passed
2935
Passed By
1303
Net Change
+1632
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14245
5K → 10K85804-719#14245#14964
10K → 15K119289-170#14964#15134
15K → 20K27894+184#15134#14950
20K → Half5519+36#14950#14914
Half → 25K28613+273#14914#14641
25K → 30K35536+319#14641#14322
30K → 20M19518+177#14322#14145
20M → 21M19116+175#14145#13970
21M → 35K2081+207#13970#13763
35K → 23M3464+342#13763#13421
23M → 24M3022+300#13421#13121
24M → 40K2420+242#13121#12879
40K → 25.2M760+76#12879#12803
25.2M → Finish1977+190#12803#12613
TOTALS29351303+1632
📊

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