San Francisco Marathon logo
SF MARATHON 1ST HALF 2023

Zack Holbrook

San Francisco, CA

Bib: 11224 M 25

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 6072
Top 11%
Gender (Male)
#0 / 3331
Top 16%
Division (M25-29)
#0 / 688
Top 20%
Race Day Weather
60°/50°F
overcast clouds

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
10 ft elev
1.40M
8:16/mi
11:34
→ flat
11 ft elev
2.13M
16:26/mi
23:34
→ flat
13 ft elev
6.43M
9:31/mi
1:04:29
↑ 274↓ 780.9%
213 ft elev
6.62M
-29:-19/mi
59:06
↑ 161.6%
239 ft elev
10.65M
8:08/mi
1:31:54
↑ 153↓ 3611.0%
48 ft elev
Finish· 13.11 mi
7:52/mi
1:51:15
↑ 244↓ 1141.0%
205 ft elev
Course Elevation
10–277 ft
≈
×22story building
•▲ 774 ft climb · ▼ 557 ft descent

The Course

Half Splits

1st Half· via 6.62M
59:068:56 /mi+11.8%
2nd Half
52:098:02 /mi✓ faster
Negative split — 11.8% faster in the second half
Is this your race?

Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
1.40M
11:348:161.40 mi11:34
8:16
-
2.13M
23:3411:040.73 mi12:00
16:26
+8:10
6.43M
1:04:2910:024.30 mi40:55
9:31
-6:55
6.62M
59:068:560.19 mi
-29:-19
-38:50
10.65M
1:31:548:384.03 mi32:48
8:08
+37:27
Finish(13.11 mi)
1:51:158:292.46 mi19:21
7:52
-0:16
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

-30:-19 /mi

Average Pace

8:29 /mi

Slowest Pace

16:26 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

1:51:15

100% of race

Time at Steady Pace

0:00

0% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:29 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

Heatmap

Loading...
0mi3.3mi6.6mi9.8mi13.1mi
Pace:
Faster
Steady
Slower

Checkpoint and Segment Rankings

CheckpointSeg. DistOverallMalesM25-29Seg. OverallSeg. MalesSeg. M25-29
1.40M1.40 mi12028642141202864214
2.13M0.73 mi1075+127788+76194+201058774187
6.43M4.30 mi655+420517+271131+63527411100
6.62M0.19 mi660-5517129+2---
10.65M4.03 mi638+22503+14132-3676536139
Finish(13.11 mi)2.46 mi665-27522-19139-7883682163

Segment Performance Analysis

Start → 1.40M

0.0 - 1.4 mi

Top 20%
~flat
+3ft-2ft

Overall

1202

Males

864

M25-29

216

1.40M→2.13M

1.4 - 2.1 mi

Top 17%
~flat
+3ft-1ft

Overall

1058

Males

774

M25-29

192

2.13M→6.43M

2.1 - 6.4 mi

Top 9%
×17story building
+274ft-78ft

Overall

527

Males

411

M25-29

101

6.43M→6.62M

6.4 - 6.6 mi

×1story
+16ft-0ft

Overall

-

Males

-

M25-29

-

6.62M→10.65M

6.6 - 10.7 mi

Top 11%
×21story building
+153ft-361ft

Overall

676

Males

536

M25-29

140

10.65M→Finish

10.7 - 13.1 mi

Top 15%
×17story building
+244ft-114ft

Overall

883

Males

682

M25-29

163

Passing Analysis

Category:
▲Net Change
+0
0 passed by0* passed
SegmentMovementRank
Start → 1.40M-#1202
1.40M → 2.13M
50177+127
#1202 → #1075
2.13M → 6.43M
16436*+420
#1075 → #655
6.43M → 6.62M
3126-5
#655 → #660
6.62M → 10.65M
4163*+22
#660 → #638
10.65M → Finish
5225*-27
#638 → #665
TOTALS
190727*+537
#1202 → #665

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

Passing Visualized

Category:
Loading...

Passing Circle

Loading...

Position Flow

Loading...

Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support

Public Race Data

The San Francisco Marathon

The San Francisco Marathon

Race Place Events

Race Place Events